Technical Publications

Project overview [O]

O-1

Goto, J. and Hama, K. (2003): Horonobe Underground Research Laboratory Project: Plan of the Investigation Program for the 2003 Fiscal Year (2003/2004), JNC TN5510 2003-001.

O-2

Goto, J. and Hama, K. (2003): Horonobe Underground Research Laboratory Project: Plans for the Surfaced-Based Investigations (Phase 1), JNC TN5510 2003-002.

O-3

Hama, K., Takahashi, K., Ishii, E., Takeuchi, R., Sasaki, M., Kunimaru, T. and Matsui, H. (2003): Working Program for Deep Borehole Investigations: HDB-6,7,8 borehole, JNC TN5400 2003-002.

O-4

Hama, K., Amemiya K. and Yamaguchi, Y. (2004): Horonobe Underground Research Laboratory Project: Plan of the Investigation Program for the 2004 Fiscal Year (2004/2005), JNC TN5510 2005-001.

O-5

Hama, K. and Yamasaki, S. (2004): Underground research laboratory program of Japan: Its technical and social aspects, Proceedings of the 14^th Pacific Basin Nuclear Conference, Honolulu, HI, USA, March 2004, pp.166-167.

O-6

Yamasaki, S., Matsui, H., Hama, K., Morioka, H., Hatanaka, K. and Fukushima, T. (2004): International Workshop on Horonobe Underground Research Laboratory Project: Abstracts, JNC TN5400 2204-004.

O-7

Yamasaki, S., Matsui, H., Hama, K., Morioka, H., Hatanaka, K., Fukushima, T. and Seya, M. (2004): International Workshop on Horonobe Underground Research Laboratory Project / Record (Research Document), JNC TN5400 2004-005; Errata.

O-8

Funaki, H., Matsui, H., Hama, K., Kunimaru, T., Ishii, E. and Kurikami, H. (2005): Horonobe Underground Research Laboratory Project: The present understanding of geological environment, Report of the International Workshop on Waste Management in Sapporo (Sapporo Workshop 2005), Sapporo, Japan, August 2005, pp.125-128.

O-9

Hama, K., Seya, M. and Yamaguchi, T. (2005): Horonobe Underground Research Laboratory Project: Investigation Program for the 2005 Fiscal Year (2005/2006), JNC TN5510 2005-002.

O-10

Hatanaka, K. (2005): Progress of the surface-based investigation phase and plan for the next investigation phase in Horonobe URL Project, Report of the International Workshop on Waste Management in Sapporo (Sapporo Workshop 2005), Sapporo, Japan, August 2005, pp.1-6.

O-11

Yamasaki, S., Fukushima, T. and Aoki, K. (2005): Preliminary results of surface-based investigation at the Horonobe URL site, Japan, Proceedings of the 2^nd International Meeting on Clays in Natural and Engineering Barriers for Radioactive Waste Confinement (TOURS2005), Tours, France, March 2005, pp.59-60.

O-12

Matsui, H., Niizato, T. and Yamaguchi, T. (2007): Horonobe Underground Research Laboratory Project: Investigation Program for the 2006 Fiscal Year (Translated Document), JAEA-Research 2007-041, doi:10.11484/jaea-research-2007-041.

O-13

Matsui, H., Kurikami, H., Kunimaru, T., Morioka, H. and Hatanaka, K. (2007): Horonobe URL project: Present status and future plans, In: Rock Mechanics: Meeting Society’s Challenges and Demands, Proceedings of the 1^st Canada-US Rock Mechanics Symposium, Vancouver, Canada, May 2007, ARMA-07-047, pp.1193-1201.

O-14

Hatanaka, K., Shigeta, N. and Fukushima, T. (2008): Applying systematic geosynthesis methodology to surface-based investigation in “Horonobe URL Project”, Japan, Proceedings of the 12^th International High-Level Radioactive Waste Management Conference 2008 (IHLRWM2008), Las Vegas, NV, USA, September 2008, pp.101-108.

O-15

Matsui, H., Nakayama, M., Sanada, H. and Yamaguchi, T. (2008): Horonobe Underground Research Laboratory Project: Investigation Program for the 2007 Fiscal Year (Translated Document), JAEA-Research 2008-070, doi:10.11484/jaea-research-2008-070.

O-16

Alexander, W.R., Ota, K., Niizato., T. and Kunimaru, T. (2009): Palaeohydrogeology in coastal site characterisation: A case study at Horonobe, Japan, Geochimica et Cosmochimica Acta, Goldschmidt Conference Abstracts 2009, Goldschmidt2009, Davos, Switzerland, June 2009, p.A24.

O-17

Hatanaka, K., Osawa, H. and Umeki, H. (2009): Geosynthesis: Testing a safety case methodology at generic Japanese URLs, In: “AMIGO-3, Approaches and Challenges for the Use of Geological Information in the Safety Case for Deep Disposal of Radioactive Waste”, Workshop Proceedings, Nancy, France, April 2008, NEA No.6417, pp.134-153.

O-18

Abe, H. and Hatanaka, K. (2010): Current status of Horonobe URL Project in construction phase, Proceedings of the ASME 13^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2010), Tsukuba, Japan, October 2010, ICEM2010-40069, pp.185-192, doi:10.1115/ICEM2010-40069.

O-19

Nakayama, M., Sanada, H., Yamaguchi, T. and Sugita, Y. (2010): Horonobe Underground Research Laboratory Project: Investigation Program for the 2008 Fiscal Year (Translated Document), JAEA-Review 2010-044, doi:10.11484/jaea-review-2010-044.

O-20

Ota, K., Amano, K., Niizato, T., Alexander, W.R. and Yamanaka, Y. (2010): Development of comprehensive techniques for coastal site characterisation: Part 1 Strategic overview, Proceedings of the ASME 13^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2010), Tsukuba, Japan, October 2010, ICEM2010-40056, pp.123-132, doi:10.1115/ICEM2010-40056.

O-21

Fujita, T., Taniguchi, N., Matsui, H., Tanai, K., Maekawa, K., Sawada, A., Makino, H., Sasamoto, H., Yoshikawa, H., Shibata, M., Wakasugi, K., Hama, K., Kurikami, H., Kunimaru, T., Ishii, E., Takeuchi, R., Ota, K., Miyahara, K., Naito, M. and Yui, M. (2011): Horonobe Underground Research Laboratory Project: Synthesis of Phase I Investigation 2001 – 2005, Volume “Geological Disposal Research”, JAEA-Research 2011-001, doi:10.11484/jaea-research-2011-001.

O-22

Kunimaru, T., Takeuchi, R. and Matsuzaki, T. (2011): Technical know-how of selection process for the Horonobe Underground Research Laboratory area and site, Proceedings of the ASME 14^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2011), Reims, France, September 2011, ICEM2011-59088, pp.1185-1194, doi:10.1115/ICEM2011-59088.

O-23

Ota, K., Abe, H. and Kunimaru, T. (Eds.) (2011): Horonobe Underground Research Laboratory Project: Synthesis of Phase I Investigations 2001 – 2005, Volume “Geoscientific Research”, JAEA-Research 2010-068, doi:10.11484/jaea-research-2010-068.

O-24

Saegusa, H., Niizato, T., Yasue, K., Onoe, H. and Doke, R. (2011): Technical know-how of site descriptive modeling for site characterization, Proceedings of the ASME 14^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2011), Reims, France, September 2011, ICEM2011-59089, pp.1451-1460, doi:10.1115/ICEM2011-59089.

O-25

Sato, H., Sugita, Y. and Nakayama, M. (2011): Status of the Horonobe Underground Research Laboratory Project, Hokkaido, Japan, and future plan, Proceedings of the 19^th International Conference on Nuclear Engineering (ICONE-19), Suita, Japan, October 2011, ICONE19-43903, doi:10.1299/jsmeicone.2011.19._ICONE1943_339.

O-26

Hama, K., Sasao, E., Iwatsuki, T., Onoe, H., Sato, T., Fujita, T., Sasamoto, H., Matsuoka, T., Takeda, M., Aoyagi, K., Nakayama, M., Miyakawa, K., Ohyama, T., Yasue, K., Asamori, K., Niwa, M., Osawa, H., Ito, H., Nagae, I., Natsuyama, R., Senba, T. and Amano, K. (2016): Synthesized Research Report in the Second Mid-Term Research Phase: Mizunami Underground Research Laboratory Project, Horonobe Underground Research Laboratory Project and Geo-Stability Project (Translated Document), JAEA-Review 2016-014, doi:10.11484/jaea-review-2016-014.

O-27

Japan Atomic Energy Agency: CoolRep H26,
https://kms1.jaea.go.jp/CoolRep/english/index.html.

Long-term geosphere evolution [L]

L-1

Tsukuwi, R., Niizato, T., Aoki, K. and Fukushima, T. (2004): Developing a remote monitoring system using ACROSS in Horonobe Underground Research Laboratory, Proceedings of the 1^st International Workshop on Active Monitoring in the Solid Earth Geophysics (IWAM2004), Mizunami, Japan, June-July 2004, S1-P02.

L-2

Birkhaser, P., Lacave, C., Ohara, H. and Niizato, T. (2005): Computation of Amplification Functions in the Wakkanai Formation, Horonobe Area (Document on Collaborative Study), JNC TY5410 2005-001.

L-3

Ishii, E. and Yasue, K. (2005): Study of paleohydrogeology in the Horonobe Underground Research Laboratory Project, Report of the International Workshop on Waste Management in Sapporo (Sapporo Workshop 2005), Sapporo, Japan, August 2005, pp.129-132.

L-4

Yasue, K. (2005): Data Book of the Fossil Diatoms After the Neogene in the Horonobe Town, JNC TN5450 2005-001.

L-5

Kawamura, A., Oi, T., Makino, H., Umeda, K., Niizato, T., Ishimaru, T. and Seno, T. (2006): Study on evaluation method for potential impacts of “natural phenomena” on a HLW disposal system, Proceedings of the 2006 East Asia Forum on Radwaste Management Conference (2006 EAFORM Conference), Lung-Tan, Taiwan, November 2006, pp.350-367.

L-6

Kawamura, M., Umeda, K., Oi, T., Ishimaru, T., Niizato, T., Yasue, K. and Makino, H. (2007): Study on potential changes in geological and disposal environment caused by “natural phenomena” on a HLW disposal system, Abstracts of the American Geophysical Union, Fall Meeting 2007, San Francisco, CA, USA, December 2007, H41E-0830.

L-7

Kumazawa, M., Kunitomo, T., Nakajima, T., Tsuruga, K., Hasada, Y., Nagao, H., Matsumoto, H., Kasahara, J., Fujii, N. and Shigeta, N. (2007): Development of ACROSS (Accurately Controlled, Routinely Operated, Signal System) to Realize Constant Monitoring the Invisible Earth’s Interiors by Means of Stationary Coherent Elastic and Electromagnetic Waves, JAEA-Research 2007-033, doi:10.11484/jaea-research-2007-033.

L-8

Iwatsuki, T., Mizuno, T., Hama, K. and Kunimaru, T. (2008): Hydrochemical records on long-term changes of deep groundwater system, Japan, Proceedings of the 36^th International Association of Hydrogeologists Congress 2008 (IAH2008), Toyama, Japan, October 2008 (CD-ROM).

L-9

Kawamura, M., Yasue, K., Niizato, T., Tokiwa, T., Ebashi, T., Oi, T., Makino, H., Ishimaru, T. and Umeda, K. (2008): Study on perturbation scenario for uplift and denudation in performance assessment of a HLW disposal system, Proceedings of the 2008 East Asia Forum on Radwaste Management Conference (2008 EAFORM 2^nd Conference), Tokyo, Japan, October 2008 (USB Flash Drive).

L-10

Yasue, K., Saegusa, H., Onoe, H., Takeuchi, R. and Niizato, T. (2008): Study for evaluation of the influence of long-term climate change on deep groundwater flow conditions: Integration of paleo-climatology and hydrogeology, Proceedings of the 36^th International Association of Hydrogeologists Congress 2008 (IAH2008), Toyama, Japan, October 2008 (CD-ROM).

L-11

Niizato, T., Yasue, K. and Kurikami, H. (2009): Impacts of natural events and processes on groundwater flow conditions: a case study in the Horonobe area, Hokkaido, northern Japan, In: “Stability and Buffering Capacity of the Geosphere for Long-Term Isolation of Radioactive Waste: Application to Crystalline Rock”, Workshop Proceedings, Manchester, UK, November 2007, NEA No.6362, pp.269-275.

L-12

Niizato, T., Yasue, K., Kurikami, H., Kawamura, M. and Ohi, T. (2009): Synthesising geoscientific data into a site model for performance assessment: A Study on the long-term evolution of the geological environment in and around the Horonobe URL, Hokkaido, northern Japan, In: “AMIGO-3: Approaches and Challenges for the Use of Geological Information in the Safety Case for Deep Disposal of Radioactive Waste”, Workshop Proceedings, Nancy, France, April 2008, NEA No.6417, pp.222-234.

L-13

Nohara, T. (2009): Hydraulic and hydrochemical response to seismic events, In: “Stability and Buffering Capacity of the Geosphere for Long-Term Isolation of Radioactive Waste: Application to Crystalline Rock”, Workshop Proceedings, Manchester, UK, November 2007, NEA No.6362, pp.197-203.

L-14

Ota, K., Alexander, W. R., Niizato, T. and Kunimaru, T. (2009): Evolution of the hydrochemical system at Horonobe, Japan: An indication from rock matrix porewater chemistry, Geochimica et Cosmochimica Acta, Goldschmidt Conference Abstracts 2009, Goldschmidt2009, Davos, Switzerland, June 2009, p.A980.

L-15

Kawamura, A., Tanikawa, S., Niizato, T. and Yasue, K. (2010): Development of methodology to construct a generic conceptual model of river-valley evolution for performance assessment of HLW geological disposal, Proceedings of the ASME 13^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2010), Tsukuba, Japan, October 2010, ICEM2010-40137, pp.331-338, doi:10.1115/ICEM2010-40137.

L-16

Niizato, T., Amano, K., Ota, K., Kunimaru, T., Lanyon, B. and Alexander, W.R. (2010): Development of comprehensive techniques for coastal site characterisation: Part 3 Conceptualisation of long-term geosphere evolution, Proceedings of the ASME 13^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2010), October 2010, Tsukuba, Japan, ICEM2010-40052, pp.97-106, doi:10.1115/ICEM2010-40052.

L-17

Niizato, T., Yasue, K., Doke, R., Nakayasu, A. and Shigehiro, M. (2010): Technical know-how and decision process for geoscientific investigation of geological disposal of HLW: (2) An externalization of tacit knowledge in a geoscientific investigation; an example of investigations for an estimation of uplift rate, In: Takeshita, T., Hashimoto, Y., Hirose, T. and Takagi, H. (Eds.) “Joint Meeting of Korean and Japanese Geological Societies: Muroto Geopark”, Muroto, Japan, August 2010, p.30.

L-18

Semba, T., Takeuchi, S., Tokiwa, T., Niizato, T. and Osawa, H. (2010): Technical know-how and decision process for geoscientific investigation of geological disposal of HLW (1) Overview of Information Synthesis and Interpretation System (ISIS) and application of investigation methodology in URL program to the characterization of accretionary complex, In: Takeshita, T., Hashimoto, Y., Hirose, T. and Takagi, H. (Eds.) “Joint Meeting of Korean and Japanese Geological Societies: Muroto Geopark”, Muroto, Japan, August 2010, p.24.

L-19

Tokiwa, T., Asamori, K., Hiraga, N., Yamada, O., Moriya, H., Hotta, H., Kitamura, I. and Yokota, H. (2010): Relationship between hypocentral distribution and geological structure in the Horonobe area, northern Hokkaido, Japan, Proceedings of the ASME 13^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2010), October 2010, Tsukuba, Japan, ICEM2010-40054, pp.117-122, doi:10.1115/ICEM2010-40054.

L-20

Tokiwa, T., Asamori, K., Niizato, T., Nohara, T., Matsuura, Y. and Kosaka, H. (2010): An attempt to evaluate horizontal crustal movement by geodetic and geological approach in the Horonobe area, northern Hokkaido, Japan, Proceedings of the ASME 13^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2010), October 2010, Tsukuba, Japan, ICEM2010-40189, pp.407-413, doi:10.1115/ICEM2010-40189.

L-21

Amano, K., Niizato, T., Ota., K., Lanyon, B. and Alexander, W.R. (2011): Development of comprehensive techniques for coastal site characterisation; Integrated palaeohydrogeological approach for development of site evolution models, Proceedings of the ASME 14^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2011), Reims, France, September 2011, ICEM2011-59259, pp.1477-1481, doi:10.1115/ICEM2011-59259.

L-22

Doke, R., Yasue, K., Niizato, T. and Nakayasu, A. (2011): Technical know-how for the investigation and modeling of topographic evolution for site characterization, Proceedings of the ASME 14^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2011), Reims, France, September 2011, ICEM2011-59171, pp.1467-1476, doi:10.1115/ICEM2011-59171.

L-23

Kurikami, H., Niizato, T. and Yasue, K. (2011): A study on time frame definition and reference evolution of the geological system for the safety assessment; Case study on the Horonobe URL site, Proceedings of the 19^th International Conference on Nuclear Engineering (ICONE-19), Suita, Japan, October 2011, ICONE19-43731, doi:10.1299/jsmeicone.2011.19._ICONE1943_283.

L-24

Niizato, T., Imai, H., Maekawa, K., Yasue, K., Kurikami, H., Shiozaki, I. and Yamashita, R. (2011): Development of a methodology for the characterisation of long-term geosphere evolution: (1) Impacts of natural events and processes on the geosphere evolution of coastal setting, in the case of Horonobe area, Proceedings of the 19^th International Conference on Nuclear Engineering (ICONE-19), Suita, Japan, October 2011, ICONE19-43163, doi:10.1299/jsmeicone.2011.19._ICONE1943_59.

L-25

Yasue, K., Doke, R., Niwa, M., Tanikawa, S., Nakayasu, A., Niizato, T., Asamori, K., Ishimaru, T. and Umeda, K. (2011): Spatial variations in the onset times of active faultings in Japan, Abstracts of the American Geophysical Union, Fall Meeting 2011, San Francisco, CA, USA, December 2011, T43D-2364.

L-26

Sato, T., Aoyagi, K., Miyara, N., Aydan, Ö., Tomiyama, J. and Morita, T. (2019): The dynamic response of Horonobe Underground Research Center during the 2018 June 20 earthquake, Proceedings of the 2019 Rock Dynamics Summit (RDS2019), Nago, Japan, May 2019, ISRM-RDS-2019-107, pp.640-645.

Geology and geological structure [G]

G-1

Hara, A. and Uchida, M. (2004): Evaluating heterogeneity in mudstones based on geologic processes at Horonobe, Japan, Proceedings of the 66^th EAGE Conference & Exhibition, Paris, France, June 2004 (CD-ROM).

G-2

Hara, A., Tsuji, T., Nishimura, M., Hoshi, K., Yagi, M., Kawata, K. and Hou, J.-Y. (2005): Application of log interpretation methods to evaluate heterogeneity in diatomaceous mudstone at Horonobe area, Proceedings of the International Symposium NUCEF2005, Tokai, Japan, February 2005, JAERI-Conf 2005-007, pp.270-275.

G-3

Ishii, E., Yasue, K., Tsukui, R., Hama, K. and Takahashi, K. (2005): Structure of the Omagari Fault in northern Hokkaido, Japan, Abstracts of the Asia Oceania Geosciences Society 2^nd Annual Meeting (AOGS2005), Singapore, June 2005, 58-SE-A0916.

G-4

Amo, M., Suzuki, N., Shinoda, T., Ratnayake, N.P. and Takahashi, K. (2007): Diagenesis and distribution of sterenes in Late Miocene to Pliocene marine siliceous rocks from Horonobe (Hokkaido, Japan), Organic Geochemistry, Vol.38, pp.1132-1145, doi:10.1016/j.orggeochem.2007.02.010.

G-5

Ishii, E., Funaki, H., Tokiwa, T. and Ota, K. (2008): Relationship between growth mechanism of faults and permeability variations with depth in siliceous mudstone in northern Hokkaido, Japan, Fault Zones Abstract Book “Fault Zones: Structure, Geomechanics and Fluid Flow”, London, UK, September 2008, p.69.

G-6

Ishii, E., Funaki, H., Tokiwa, T and Ota, K. (2009): Relationship between fault growth mechanism and permeability variations with depth of siliceous mudstones in northern Hokkaido, Japan, Journal of Structural Geology, Vol.32, pp.1792-1850, doi:10.1016/j.jsg.2009.10.012.

G-7

Matsuoka, T., Amano, K., Osawa, H. and Semba, T. (2010): Technical know-how for modeling of geological environment: Part 2 Geological modeling, Proceedings of the ASME 13^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2010), Tsukuba, Japan, October 2010, ICEM2010-40066, pp.169-173, doi:10.1115/ICEM2010-40066.

G-8

Moriya, H., Asamori, K., Kitamura, I., Hotta, H., Ohara, H. and Niizato, T. (2010): Estimation of crustal structure in Horonobe area, Hokkaido, Japan, using multiplet-clustering analysis, Journal of Acoustic Emission, Vol.28, pp.1-10.

G-9

Sugita, Y., Nakamura, T., Sanada, H., Aizawa, T. and Ito, S. (2010): Seismic tomography investigation in 140m Gallery in the Horonobe URL Project, In: Smith, K.L., Whittle, K.R., Kroeker, S. and Uberuaga, B. (Eds.) “Scientific Basis for Nuclear Waste Management XXXIV”, 2010 MRS Spring Meeting, San Francisco, CA, USA, April 2010, MRS Symposium Proceedings, Vol.1265, pp.39-44, doi:10.1557/PROC-1265-AA06-03.

G-10

Ishii, E., Sanada, H., Funaki, H., Sugita, Y. and Kurikami, H. (2011): The relationships among brittleness, deformation behavior, and transport properties in mudstones: An example from the Horonobe Underground Research Laboratory, Japan, Journal of Geophysical Research, Solid Earth, Vol.116, B09206, doi:10.1029/2011JB008279.

G-11

Ishii, E., Sanada, Iwatsuki, T., Sugita, Y. and Kurikami, H. (2011): Mechanical strength of the transition zone at the boundary between opal-A and opal-CT zones in siliceous rocks, Engineering Geology, Vol.122, pp.215-221, doi:10.1016/j.enggeo.2011.05.007.

G-12

Ishii, E. (2012): Microstructure and origin of faults in siliceous mudstone at the Horonobe Underground Research Laboratory site, Japan, Journal of Structural Geology, Vol.34, pp.20-29, doi:10.1016/j.jsg.2011.11.001.

G-13

Tokiwa, T., Tsusaka, K., Matsubara, M., Ishikawa, T. and Ogawa, D. (2012): Formation mechanism of extension fractures induced by excavation of a gallery in soft sedimentary rock, Horonobe area, northern Japan, Geoscience Frontiers, Vol.4, pp.105-111, doi:10.1016/j.gsf.2012.05.003.

G-14

Miyakawa, K., Tokiwa, T. and Murakami, H. (2013): The origin of muddy sand sediments associated with mud volcanism in the Horonobe area of northern Hokkaido, Japan, Geochemistry, Geophysics, Geosystems, Vol.14, pp.4980-4988, doi:10.1002/2013GC004924.

G-15

Hayano, A. and Ishii, E. (2016): Relationship between faults oriented parallel and oblique to bedding in Neogene massive siliceous mudstones at the Horonobe Underground Research Laboratory, Japan, IOP Conference Series, Earth and Environmental Science, Vol.44, 022004, doi:10.1088/1755-1315/44/2/022004.

G-16

Ishii, E. (2016): Far-field stress dependency of the failure mode of damage-zone fractures in fault zones: Results from laboratory tests and field observations of siliceous mudstone, Journal of Geophysical Research: Solid Earth, Vol.121, pp.70-91, doi:10.1002/2015JB012238.

G-17

Ishii, E. (2016): The role of bedding in the evolution of meso- and microstructural fabrics in fault zones, Journal of Structural Geology, Vol.89, pp.130-143, doi:10.1016/j.jsg.2016.05.007.

G-18

Ishii, E. (2017): Estimation of the highest potential transmissivity of discrete shear fractures using the ductility index, International Journal of Rock Mechanics and Mining Sciences, Vol.100, pp.10-22, doi:10.1016/j.ijrmms.2017.10.017.

G-19

Ishii, E. and Furusawa, A. (2017): Detection and correlation of tephra-derived smectite-rich shear zones by analyzing glass melt inclusions in mineral grains, Engineering Geology, Vol.228, pp.158-166, doi:10.1016/j.enggeo.2017.08.010.

G-20

Aoyagi, K., Chen, Y., Ishii, E., Sakurai, A. and Ishida, T. (2019): Visualization of fractures induced around the gallery wall in Horonobe Underground Research Laboratory, Proceedings of 5^th ISRM Young Scholars’ Symposium on Rock Mechanics and International Symposium on Rock Engineering for Innovative Future (YSRM2019 and REIF2019), Ginowan, Japan, December 2019, ISRM-YSRM-2019-088.

G-21

Ishii, E. (2019): Protolith identification of bedding-parallel, smectite-bearing shear zones in argillaceous and siliceous marine sediments: Discriminating between tephra-derived shear zones and host-rock-derived fault gouges, Engineering Geology, Vol.259, 105203, doi:10.1016/j.enggeo.2019.105203.

G-22

Ishii, E. (2020): A conventional straddle-sliding-packer system as a borehole extensometer: Monitoring shear displacement of a fault during an injection test, Engineering Geology, Vol.275, 105748, doi:10.1016/j.enggeo.2020.105748.

G-23

Aoyagi, K., Ishii, E., Chen, Y. and Ishida, T. (2022): Resin-injection testing and measurement of the shear displacement and aperture of excavation-damaged zone fractures: A case study of mudstone at the Horonobe Underground Research Laboratory, Japan, Rock Mechanics and Rock Engineering, Vol.55, pp.1855-1869, doi.org/10.1007/s00603-022-02777-z.

Hydrogeology [H]

H-1

Yamamoto, H., Kunimaru, T., Shimo, M., Fujiwara, Y., Ono, M., Xu, T. and Laaksoharju, M. (2005): Reactive chemical transport simulations for evaluation of ambient chemical conditions at Horonobe URL Site, Hokkaido, Japan, Proceedings of the 2^nd Japan-Korea Joint Workshop on Radioactive Waste Disposal 2005, Tokyo, Japan, October 2005, pp.159-172.

H-2

Kurikami, H., Kunimaru, T., Yabuuchi, S., Seno, S., Shimo, M. and Kumamoto, S. (2006): Hydrogeological model in Horonobe Underground Research Laboratory Project, Proceedings of the 2^nd International Conference on Coupled T-H-M-C Processes in Geo-Systems; Fundamentals, Modeling, Experiments and Applications (GeoProc2006), Nanjing, China, May 2006, pp.584-589.

H-3

Kurikami, H., Takeuchi, R. and Yabuuchi, S. (2007): Scale effect and heterogeneity of hydraulic conductivity of sedimentary rocks at Horonobe URL site, Physics and Chemistry of the Earth, Parts A/B/C, Vol.33, Suppl.1, pp.S37-S44, doi:10.1016/j.pce.2008.10.016.

H-4

Doughty, C., Tsang,C.-F., Hatanaka, K., Yabuuchi, S. and Kurikami, H. (2008): Application of direct-fitting, mass integral, and multirate methods to analysis of flowing fluid electric conductivity logs from Horonobe, Japan, Water Resources Research, Vol.44, W08403, doi:10.1029/2007WR006441.

H-5

Yokota, H., Tomura, G. and Maekawa, K. (2009): Study of estimation of hydrogeological structures based on fluctuation of groundwater pressure at Horonobe area, Hokkaido, northern Japan, Proceedings of the 3^rd International Workshop and Conference on Earth Resources Technology 2009, Sapporo, Japan, May 2009, pp.169-178.

H-6

Hatanaka, K., Lim, D.-H. and Ishii, E. (2010): Geo-descriptive modeling of water conducting features characterized in sedimentary formations in Horonobe area of Japan, In: Smith, K.L., Whittle, K.R., Kroeker, S. and Uberuaga, B. (Eds.) “Scientific Basis for Nuclear Waste Management XXXIV”, 2010 MRS Spring Meeting, San Francisco, CA, USA, April 2010, MRS Symposium Proceedings, Vol.1265, pp.45-50, doi:10.1557/PROC-1265-AA06-04.

H-7

Maekawa, K., Makino, H., Kurikami, H, Niizato, T, Inagaki, M. and Kawamura, M. (2010): Development of methodology of groundwater flow and solute transport analysis in the Horonobe area, Hokkaido, Japan, Proceedings of the ASME 13^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2010), Tsukuba, Japan, October 2010, ICEM2010-40041, pp.71-80, doi:10.1115/ICEM2010-40041.

H-8

Saegusa, H., Takeuchi, S., Maekawa, K., Osawa, H. and Semba, T. (2010): Technical know-how for modeling of geological environment: Part 1 Overview and groundwater flow modeling, Proceedings of the ASME 13^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2010), Tsukuba, Japan, October 2010, ICEM2010-40062, pp.133-140, doi:10.1115/ICEM2010-40062.

H-9

Yamamoto, S., Honda, M., Sakurai, H., Suzuki, M., Sanada, H., Sugita, Y. and Matsui, H. (2010): Geostatistical modeling of groundwater properties and assessment of their uncertainties, Proceedings of the 14^th Annual Conference of the International Association for Mathematical Geosciences (IAMG2010), Budapest, Hungary, August-September 2010 (CD-ROM).

H-10

Yokota, H., Yamamoto, Y., Maekawa, K. and Hara, M. (2010): A study on groundwater infiltration in the Horonobe area, northern Hokkaido, Japan, Proceedings of the ASME 13^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2010), Tsukuba, Japan, October 2010, ICEM2010-40047, pp.81-86, doi:10.1115/ICEM2010-40047.

H-11

Karasaki, K., Ito, K., Wu, Y.-S., Shimo, M., Sawada, A., Maekawa, K. and Hatanaka, K. (2011): Uncertainty reduction of hydrologic models using data from surface-based investigation, Journal of Hydrology, Vol.403, pp.49-57, doi:10.1016/j.jhydrol.2011.03.039.

H-12

Doughty, C., Tsang,C.-F., Yabuuchi, S. and Kunimarui, T. (2013): Flowing fluid electric conductivity logging for a deep artesian well in fractured rock with regional flow, Journal of Hydrology, Vol.482, pp.1-13, doi:10.1016/j.jhydrol.2012.04.061.

H-13

Miyakawa, K., Nohara, T., Tokiwa, T. and Yamazaki, M. (2013): Repetition of spectral analysis on rock permeability applied to seven years record of pore-pressure response to atmospheric loading at the Horonobe URL in Japan, Proceedings of the 13^th Japan Symposium on Rock Mechanics and the 6th Japan-Korea Joint Symposium, Ginowan, Japan, September 2013, pp.1027-1032.

H-14

Tokiwa, T., Sawada, S., Ochiai, S. and Miyakawa, K. (2013): Occurrence of high-permeability fracture estimated by grouting in Horonobe URL of Japan, Proceedings of the 13^th Japan Symposium on Rock Mechanics and the 6^th Japan-Korea Joint Symposium, Ginowan, Japan, September 2013, pp.1021-1025.

H-15

Miyakawa, K., Nohara, T., Tokiwa, T. and Yamazaki, M. (2014): Seven-year history of vertical hydraulic diffusivity related to excavation around an underground facility, International Journal of Rock Mechanics and Mining Sciences, Vol.70, pp.332-342, doi:10.1016/j.ijrmms.2014.02.023.

H-16

Ishii, E. (2015): Predictions of the highest potential transmissivity of fractures in fault zones from rock rheology: Preliminary results, Journal of Geophysical Research: Solid Earth, Vol.120, pp.2220-2241, doi:10.1002/2014JB011756.

H-17

Ishii, E. (2017): Preliminary assessment of the highest potential transmissivity of fractures in fault zones by core logging, Engineering Geology, Vol.221, pp.124-132, doi:10.1016/j.enggeo.2017.02.026.

H-18

Ishii, E. (2018): Assessment of hydraulic connectivity of fractures in mudstones by single-borehole investigations, Water Resources Research, Vol.54, pp.3335-3356, doi:10.1029/2018WR022556.

H-19

Aoyagi, K. and Ishii, E. (2019): A method for estimating the highest potential hydraulic conductivity in the excavation damaged zone in mudstone, Rock Mechanics and Rock Engineering, Vol.52, pp.385-401, doi:10.1007/s00603-018-1577-z.

H-20

Ohno, H., Takeda, M. and Ishii, E. (2020): Does fault activation affect the hydraulic disconnectivity of faults in mudstone? Proceedings of the International Conference on Coupled Processes in Fractured Geological Media; Observation, Modeling, and Application (CouFrac2020), Seoul, Korea, November 2020, GS11-03.

H-21

Ozaki, Y., Ishii, E. and Sugawara, K. (2020): Poroelastic hydraulic-response of fractured mudstone to excavation in the Horonobe URL: As an indicator of fracture hydraulic-disconnectivity, Proceedings of the International Conference on Coupled Processes in Fractured Geological Media; Observation, Modeling, and Application (CouFrac2020), Seoul, Korea, November 2020, GS11-04.

H-22

Ishii, E. (2021): The highest potential transmissivities of fractures in fault zones: Reference values based on laboratory and in situ hydro-mechanical experimental data, Engineering Geology, Vol.294, 106369, doi:10.1016/j.enggeo.2021.106369.

H-23

Miyawaka, K., Aoyagi, K., Akaki, T. and Yamamoto, H. (2021): A Numerical Simulation Study of the Desaturation and Oxygen Infusion into the Sedimentary Rock around the Tunnel in the Horonobe Underground Research Laboratory, JAEA-Data/Code 2021-002, doi:10.11484/jaea-data-code-2021-002; Appendix.

H-24

Miyakawa, K., Aoyagi, K., Akaki, T. and Yamamoto, H. (2021): Numerical simulation of oxygen infusion into desaturation resulting from artificial openings in sedimentary formations, Proceedings of the 15^th Japan Symposium on Rock Mechanics, Suita, Japan, January 2021, pp.609-614.

H-25

Ishii, E. (2022): Constant-head step injection tests to quantify the stress dependence of fracture transmissivity in an excavation damaged zone: A case study from the Horonobe Underground Research Laboratory, International Journal of Rock Mechanics and Mining Sciences, Vol.159, 105229, doi:10.1016/j.ijrmms.2022.105229.

H-26

Mochizuki, A. and Ishii, E. (2022): Assessment of the level of activity of advective transport through fractures and faults in marine deposits by comparison between stable isotope compositions of fracture and pore waters, Hydrogeology Journal, Vol.30, pp.813-827, doi:10.1007/s10040-022-02466-9.

H-27

Ohno, H. and Ishii, E. (2022): Effect of fault activation on the hydraulic connectivity of faults in mudstone, Geomechanics for Energy and the Environment, Vol.31, 100317, doi:10.1016/j.gete.2022.100317.

H-28

Ozaki, Y., Ishii, E. and Sugawara, K. (2022): Variation in fault hydraulic connectivity with depth in mudstone: An analysis of poroelastic hydraulic response to excavation in the Horonobe URL, Geomechanics for Energy and the Environment, Vol.31, 100311, doi:10.1016/j.gete.2022.100311.

Hydrogeochemistory [C]

C-1

Kunimaru, T. and Metcalfe, R. (2002): Isotopic study for the estimation of C-14 age of groundwater at the Horonobe, Hokkaido, Proceedings of the 9^th International Conference on Accelerator Mass Spectrometry (AMS-9), Nagoya, Japan, September 2002, p.198.

C-2

Aoki, K., Kunimura, T., Hirota, Y. and Tazaki, K. (2003): Preliminary microbial analysis of groundwater in Horonobe Underground Research Laboratory, Hokkaido, Japan, Proceedings of the International Symposium of the Kanazawa University of 21^st-Century COE Program, Vol.1, pp.244-247, doi:10.24517/00035426.

C-3

Hama, K., Kunimaru, T. and Metcalfe, R. (2005): The hydrogeochemistry of argillaceous rock formations at the Horonobe URL site, Japan, Proceedings of the 2^nd International Meeting on Clays in Natural and Engineering Barriers for Radioactive Waste Confinement (TOURS2005), Tours, France, March 2005, pp.399-400.

C-4

Nagao, S., Iwatsuki, T. and Hama, K. (2005): Characterization of groundwater humic substances by high-performance size exclusion chromatography with fluorescence detection, Report of the International Workshop on Waste Management in Sapporo (Sapporo Workshop 2005), Sapporo, Japan, August 2005, pp.3-4.

C-5

Yamamoto, H., Kunimaru, T., Kurikami, H., Shimo, M. and Xu, T. (2006): Long-term simulation of ambient groundwater chemistry at Horonobe Underground Research Laboratory, Japan: Application of coupled hydro-geochemical model, Proceedings of the 2^nd International Conference on Coupled T-H-M-C Processes in Geo-Systems: Fundamentals, Modeling, Experiments and Applications (GeoProc2006), Nanjing, China, May 2006, pp.382-387.

C-6

Hama, K., Kunimaru, T., Metcalfe, R. and Martin, A.J. (2007): The hydrogeochemistry of argillaceous rock formations at the Horonobe URL site, Japan, Physics and Chemistry of the Earth, Parts A/B/C, Vol.32, pp.170-180, doi:10.1016/j.pce.2005.12.008.

C-7

Sasamoto, H., Yui, M. and Hama, K. (2007): A preliminary interpretation of groundwater chemistry in the Horonobe Area, Proceedings of the 12^th International Symposium on Water-Rock Interaction (WRI-12), Kunming, China, July-August 2007, Vol.1, pp.385-389.

C-8

Iwatsuki, T., Sasaki, Y., Ito, T., Asano, T., Amano, Y., Yoshikawa, H., Nakamura, T. and Nagaoka, T. (2010): Biogeochemical modelling of water-rock-microbe system in Horonobe area, Japan, Geochimica et Cosmochimica Acta, Goldschmidt Conference Abstracts 2010, Goldschmidt2010, Knoxville, TN, USA, June 2010, p.A449.

C-9

Kunimaru, T., Ota, K., Alexander, W.R. and Yamamoto, H. (2010): Groundwater/Porewater Hydrochemistry at Horonobe URL: Data Freeze I: Preliminary Data Quality Evaluation for Boreholes HDB-9, 10 and 11, JAEA-Research 2010-035, doi:10.11484/jaea-research-2010-035.

C-10

Kunimaru, T., Ota, K., Amano, K. and Alexander, W.R. (2010): Development of a quality management system (QMS) for borehole investigations: Part 2 Evaluation of applicability of QMS methodology for the hydrochemical dataset, Proceedings of the ASME 13^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2010), Tsukuba, Japan, October 2010, ICEM2010-40065, pp159-168, doi:10.1115/ICEM2010-40065.

C-11

Terashima, M., Nagao, S., Iwatsuki, T., Sasaki, S., Kiyota, Y. and Yoshikawa, H. (2010): Structural characteristics of deep groundwater humic substances in Horonobe area, Hokkaido, Japan, Proceedings of the 15^th Meeting of International Humic Substances Society “Humic Substances and the Maintenance of Ecosystem Services” (IHSS-15), Tenerife, Spain, June-July 2010, Vol.3, pp.24-27.

C-12

Kunimaru, T., Ota, K., Alexander, W.R. and Yamamoto, H. (2010): Groundwater/Porewater Hydrochemistry at Horonobe URL: Data Freeze II: Preliminary Data Quality Evaluation for Boreholes HDB-1 to 8, JAEA-Research 2011-010, doi:10.11484/jaea-research-2011-010.

C-13

Iwatsuki, T., Amano, Y., Murakami, H., Nanjo, I., Aoki, K., Sasaki, Y. and Yoshikawa, H. (2011): The Analysis of hydrochemical buffering process at Horonobe Underground Research Laboratory, Japan, Book of Abstracts, 13^th International Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere (Migration2011), Beijing, China, September 2011, PB5-5.

C-14

Sasaki, Y., Asano, T., Amano, Y., Sato, T., Iwatsuki, T. and Yoshikawa, H. (2011): Study of deep subsurface microbial community under changing redox conditions using quantitative method, Mineralogical Magazine, Vol.75, Goldschmidt Conference Abstracts, Goldschmidt2011, Prague, Czech Republic, August 2011, p.1800.

C-15

Sasamoto, H., Arthur, R.C. and Hama, K. (2011): Interpretation of undisturbed hydrogeochemical conditions in Neogene sediments of the Horonobe area, Hokkaido, Japan, Applied Geochemistry, Vol.26, pp.1464-1477, doi:10.1016/j.apgeochem.2011.05.020.

C-16

Igarashi, T., Ueda, T., Hokora, H., Jo, M. and Kudo, H. (2012): Factors affecting the leaching of nitrogen species from diatomaceous mudstone, Proceedings of the 5^th AUN / SEED-Net Regional Conference on Geo-Disaster Mitigation in ASEAN, Manila, Philippines, September 2012, pp.5-11.

C-17

Mizuno, T., Iwatsuki, T. and Matsuzaki, T. (2012): Procedure for estimation of salinity distribution based on resistivity data of rock mass, Abstracts of the American Geophysical Union, Fall Meeting 2012, San Francisco, CA, USA, December 2012, H33J-1477.

C-18

Saito, T., Suzuki, Y. and Mizuno, T. (2012): Size and elemental analyses of nano colloids in deep granitic groundwater: Implications for transport of trace elements, Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol.435, pp.48-55, doi:10.1016/j.colsurfa.2012.11.031.

C-19

Sakurai, K and Yoshikawa, H. (2012): Isolation and identification of bacteria able to form biofilms from deep subsurface environments, Journal of Nuclear Science and Technology, Vol.49, pp.287-292, doi:10.1080/00223131.2012.660015.

C-20

Togo, Y., Takahashi, Y., Amano, Y., Matsuzaki, H., Suzuki, Y., Muramatsu, Y. and Iwatsuki, T. (2012): Long-term migration of iodine in sedimentary rocks based on iodine speciation and ¹²⁹I/¹²⁷I ratios, Abstracts of the American Geophysical Union, Fall Meeting 2012, San Francisco, CA, USA, December 2012, H43E-1392.

C-21

Kirishima, A., Kuno, A., Amamiya, H., Kubota, T., Kimuro, S., Amano, Y., Miyakawa, K., Iwatsuki, T., Mizuno, T., Sasaki, T. and Sato, N. (2013): Interaction of rare earth elements and suspended matters contained in Horonobe deep groundwater, Book of Abstracts, 14^th International Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere (Migration2013), Brighton, UK, September 2013, PA6-1.

C-22

Kozai, N., Ohnuki, T. and Iwatsuki, T. (2013): Characterization of saline groundwater at Horonobe, Hokkaido, Japan by SEC-UV-ICP-MS: Speciation of uranium and iodine, Water Research, Vol.47, pp.1570-1584., doi:10.1016/j.watres.2012.12.017.

C-23

Miyakawa, K., Tokiwa, T. and Murakami, H. (2013): The origin of gas and mud-volcano-like sediments in the Horonobe area of northern Hokkaido, Japan, Book of Abstracts, International Conference on Gas Geochemistry 2013 (ICGG-12), Patras, Greece, September 2013, pp.60-61.

C-24

Miyakawa, K., Tokiwa, T. and Murakami, H. (2013): The origin of muddy sand sediments associated with mud volcanism in the Horonobe area of northern Hokkaido, Japan, Geochemistry, Geophysics, Geosystems, Vol.14, pp.4980-4988, doi:10.1002/2013GC004924.

C-25

Nagaoka, T., Nakamura, T., Sasaki, Y., Asano, T., Ito, T., Amano, Y., Iwatsuki, T. and Yoshikawa, H. (2013): Microbially mediated redox processes in lactate stimulation with sedimentary rock and groundwater, Mineralogical Magazine, Vol.77, Goldschmidt Conference Abstracts, Goldschmidt2013, Florence, Italy, August 2013, p.1821, doi:10.1180/minmag.2013.077.5.14.

C-26

Amano, Y., Ise, K., Terashima, M., Sasaki, Y., Amamiya, H. and Yoshikawa, H. (2014): Spatial distribution of microbial populations and carbon cycle in the subsurface environment of the Horonobe area, Hokkaido, Japan, Abstracts of the American Geophysical Union, Fall Meeting 2014, San Francisco, CA, USA, December 2014, B31B-0012.

C-27

Amano, Y., Sasaki, Y., Nanjo, I., Amamiya, H., Mizuno, T., Ise, K. and Yoshikawa, H. (2014): Changes in microbial community composition and geochemistry during excavation shaft and galleries of the Horonobe Underground Research Laboratory, Abstracts of the 15th International Symposium on Microbial Ecology (ISME15), Seoul, Korea, August 2014, PS23-3.

C-28

Amano, Y., Ise, K., Ito, T., Nemoto, K. and Tachi, Y. (2015): An analogue study for heavy metal adsorption onto biofilm in the deep subsurface environment of the Horonobe area, Hokkaido, Japan, Book of Abstracts, 15^th International Conference on the Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere (Migration2015), Santa Fe, NM, USA, September 2015, p.256.

C-29

Miyakawa, K., Mizuno, T., Ishii, E., Hirota, A., Komatsu, D., Ikeya, K., and Tsunogai, U. (2015): Relative burial-depth-profiles of carbon isotope ratios of methane and carbon dioxide preserved for up to 1 million years, Abstracts of the 13^th International Conference on Gas Geochemistry (ICGG-13), Chengdu, China, August 2015, pp.36-38.

C-30

Saito, T., Hamamoto, T., Mizuno, T. and Iwatsuki, T. (2015): Comparative study of granitic and sedimentary groundwater colloids by flow-field flow fractionation coupled with ICP-MS, Journal of Analytical Atomic Spectrometry, Vol.30, pp.1229-1236, doi:10.1039/C5JA00088B.

C-31

Saito, T., Terashima, M., Aoyagi, N., Nagao, S., Fujitake, N. and Ohnuki, T. (2015): Physicochemical and ion-binding properties of highly aliphatic humic substances extracted from deep sedimentary groundwater, Environmental Science: Processes & Impacts, Vol.17, pp.1386-1395, doi:10.1039/C5EM00176E.

C-32

Amano, Y., Endo, T., Nemoto, K. and Tachi, Y. (2016): Microbial populations stimulated by lanthanoids in groundwater from Pliocene diatomaceous mudstone in northernmost Japan, Abstracts of the 16^th International Symposium on Microbial Ecology (ISME16), Montreal, Canada. August 2016, 004A, p.42.

C-33

Hug, L.A., Baker, B.J., Anantharaman, K., Brown, C.T., Probst, A.J., Castelle, C.J., Butterfield, C.N., Hernsdorf, A.W., Amano, Y., Ise, K., Suzuki, Y., Dudek, N., Relman, D.A., Finstad, K.M., Amundson, R., Thomas, B.C. and Banfield, J.F. (2016): A new view of the tree and life’s diversity, Nature Microbiology, Vol.1, 16048, doi:10.1038/nmicrobiol.2016.48.

C-34

Togo, Y., Takahashi, Y., Amano, Y., Matsuzaki, H., Suzuki, Y., Terada, Y., Muramatsu, Y., Ito, K. and Iwatsuki, T. (2016): Age and speciation of iodine in groundwater and mudstones of the Horonobe area, Hokkaido, Japan: Implications for the origin and migration of iodine during basin evolution, Geochimica et Cosmochimica Acta, Vol.191, pp.165-186, doi:10.1016/j.gca.2016.07.012.

C-35

Hernsdorf, A.W., Amano, Y., Miyakawa, K., Ise, K., Suzuki, Y., Anantharaman, K., Probst, A., Burstein, D., Thomas, B. and Banfield, J.F. (2017): Potential for microbial H₂ and metal transformations associated with novel bacteria and archaea in deep terrestrial subsurface sediments, The ISME Journal, Vol.11, pp.1915-1929, doi:10.1038/ismej.2017.39.

C-36

Ise, K., Sasaki, Y., Amano, Y., Iwatsuki, T., Nanjo, I., Asano, T. and Yoshikawa, H. (2017): The succession of bacterial community structure in groundwater from 250-m gallery in the Horonobe Underground Research Laboratory, Geomicrobiology Journal, Vol.34, pp.489-499, doi:10.1080/01490451.2016.1152329.

C-37

Kirishima, A., Kuno, A., Amamiya, H., Kubota, T., Kimuro, S., Amano, Y., Miyakawa, K., Iwatsuki, T., Mizuno, T., Sasaki, T. and Sato, N. (2017): Interaction of rare earth elements and components of the Horonobe deep groundwater, Chemosphere, Vol.168, pp.798-806, doi:10.1016/j.chemosphere.2016.10.133.

C-38

Miyakawa, K., Ishii, E., Hirota, A., Komatsu, D., Ikeya, K. and Tsunogai, U. (2017): The role of low-temperature organic matter diagenesis in carbonate precipitation within a marine deposit, Applied Geochemistry, Vol.76, pp.218-231, doi:10.1016/j.apgeochem.2016.11.001.

C-39

Miyakawa, K. and Okumura, F. (2017): Preliminary research on the effects of microbial methane oxidation on drill-core head-space gas analysis, Book of Abstracts, XIV^th International Conference on Gas Geochemistry, Wrocław-Świeradów, Poland, September 2017, pp.173-176.

C-40

Sasaki, T., Kokami, T., Kobayashi, T., Kirishima, A., Murakami, H., Amano, Y., Mizuno, T., Iwatsuki, T., Sasamoto, H. and Miyakawa, K. (2017): Determination of dissolved natural thorium and uranium in Horonobe and Mizunami Underground Research Laboratory groundwater and its thermodynamic analysis, Journal of Nuclear Science and Technology, Vol.54, pp.373-381, doi:10.1080/00223131.2016.1273801.

C-41

Amano, Y., Anantharaman, K., Thomas, B.C., Olm, M., Burstein, D., Castelle, C.J., Beppu, H., Miyakawa, K., Iwatsuki, T., Suzuki, Y. and Banfield, J.F. (2018): Sulfur and hydrogen metabolism linked to CO₂ fixation by abundant Nitrospirae in the deep subsurface, Abstracts of the 32^nd Annual Meeting of Japanese Society for Microbial Ecology (JSME), Ginowan, Japan, July 2018, P2-127.

C-42

Amano, Y., Diamond, S., Lavy, A., Anantharaman, K., Miyakawa, K., Iwatsuki, T., Beppu, H., Suzuki, Y., Thomas, B.C. and Banfield, J.F. (2018): Vast metabolic and phylogenetic diversity shared across deep subsurface environments, Abstracts of the American Geophysical Union, Fall Meeting 2018, Washington, DC, USA, December 2018, H21K-1798.

C-43

Kimuro, S., Kirishima, A., Nagao, S., Saito, T., Amano, Y., Miyakawa, M., Akiyama, D. and Sato, N. (2018): Characterization and thermodynamic study of humic acid in deep groundwater at Horonobe, Hokkaido, Japan, Journal of Nuclear Science and Technology, Vol.55, pp.503-515, doi:10.1080/00223131.2017.1416690.

C-44

Miyakawa, K. and Okumura, F. (2018): Improvements in drill-core headspace gas analysis for samples from microbially active depths, Geofluids, Vol.2018, 2436814, doi:10.1155/2018/2436814.

C-45

Nakata, K., Hasegawa, T., Oyama, T., Ishii, E., Miyakawa, K. and Sasamoto, H. (2018): An evaluation of the long-term stagnancy of porewater in the Neogene sedimentary rocks in northern Japan, Geofluids, Vol.2018, “Aquitard Fluids and Gasses”, 7823195, doi:10.1155/2018/7823195.

C-46

Nakata, K., Hasegawa, T., Oyama, T. and Miyakawa, K. (2018): Evaluation of δ²H and δ¹⁸O of water in pores extracted by compression method: Effects of closed pores and comparison to direct vapor equilibration and laser spectrometry method, Journal of Hydrology, Vol.561, pp.547-556, doi:10.1016/j.jhydrol.2018.03.058.

C-47

Sasamoto, H., Sato, H. and Arthur, R.C. (2018): Characterization of mineralogical controls on ammonium concentrations in deep groundwaters of the Horonobe area, Hokkaido, Journal of Geochemical Exploration, Vol.188, pp.318-325, doi:10.1016/j.gexplo.2018.01.013.

C-48

Tamamura, S., Miyakawa, K., Aramaki, N., Igarashi, T. and Kaneko, K. (2018): A proposed method to estimate in situ dissolved gas concentrations in gas-saturated groundwater, Groundwater, Vol.56, pp.118-130, doi:10.1111/gwat.12573.

C-49

Amano, Y., Beppu, H., Endo, T., Nemoto, K., Sato, T., Thomas, B.C. and Banfield, J.F. (2019): Existence and the role of subsurface biofilm in the deep sedimentary rock environment of the Horonobe area, Hokkaido, Japan, Abstracts of the American Geophysical Union, Fall Meeting 2019, San Francisco, CA, USA, December 2019, B53L-2560.

C-50

Amano, Y., Beppu, H., Ono, H., Taniguchi, N., Hirano, S., Matsumoto, N., Nagaoka, T. (2019): Laboratory and in-situ examinations of microbial abundance, composition and activity in compacted bentonite buffer materials, Proceedings of the 16^th Natural Analogue Working Group Workshop (NAWG-16), Yamagata, Japan, October 2019, Bedrock Geosciences Technical Report 2023-02, pp.60-66.

C-51

Kimuro, S., Kirishima, A., Kitatsuji, Y., Miyakawa, K., Akiyama, D. and Sato, N. (2019): Thermodynamic study of the complexation of humic acid by calorimetry, Journal of Chemical Thermodynamics, Vol.132, pp.352-362, doi:10.1016/j.jct.2019.01.011.

C-52

Miyakawa, K., Aoyagi, K., Sasamoto, H., Akaki, T. and Yamamoto, H. (2019): The effect of dissolved gas on rock desaturation in artificial openings in geological formations, Proceedings of 5^th ISRM Young Scholars’ Symposium on Rock Mechanics and International Symposium on Rock Engineering for Innovative Future (YSRM2019 and REIF2019), Ginowan, Japan, December 2019, ISRM-YSRM-2019-151.

C-53

Nakata, K., Hasegawa, T., Solomon, D.K., Miyakawa, K., Tomioka, Y., Ota, T., Matsumoto, T., Hama, K. Iwatsuki, T., Ono, M. and Marui, A. (2019): Degassing behavior of noble gases from groundwater during groundwater sampling, Applied Geochemistry, Vol.104, pp.60–70, doi:10.1016/j.apgeochem.2019.03.007.

C-54

Saitoh, Y., Hirano, S., Nagaoka, T. and Amano, Y. (2019): Genetic survey of indigenous microbial eukaryotic communities, mainly fungi, in sedimentary rock matrices of deep terrestrial subsurface, Ecological Genetics and Genomics, Vol.12, 100042, doi:10.1016/j.egg.2019.100042.

C-55

Sasamoto, H., Arthur, R.C., Alt-Epping, P. and Tachi, Y. (2019): Sensitivity analysis of natural tracer profiles in sedimentary rocks of the Horonobe URL, Book of Abstracts, 17^th International Conference on the Chemistry and Migration Behavior of Actinides and Fission Products in the Geosphere (Migration2019), Uji, Japan, September 2019, PC2-1.

C-56

Sasamoto, H. and Onda, S. (2019): Preliminary results for natural groundwater colloids in sedimentary rocks of the Horonobe Underground Research Laboratory, Hokkaido, Japan, In: Norris, S., Neeft, E.A.C. and Van Geet, M. (Eds.) “Multiple Roles of Clays in Radioactive Waste Confinement“, Geological Society Special Publications, Vol.482, doi:10.1144/SP482.1.

C-57

Al-Shayeb, B., Sachdeva, R., Chen, L.X., Ward, F., Munk, P., Devoto, A., Castelle, C.J., Olm, M.R., Bouma-Gregson, K., Amano, Y., He, C., Méheust, R., Brooks, B., Thomas, A., Lavy, A., Matheus-Carnevali, P., Sun, C., Goltsman, D.S.A., Borton, M.A., Sharrar, A., Jaffe, A.L., Nelson, T.C., Kantor, R., Keren, R., Lane, K.R., Farag, I.F., Lei, S., Finstad, K., Amundson, R., Anantharaman, K., Zhou, J., Probst, A.J., Power, M.E., Tringe, S.G., Li, W-J., Wrighton, K., Harrison, S., Morowitz, M., Relman, D.A., Doudna, J.A., Lehours, A-C., Warren, L., Cate, J.H.D., Santini, J.M. and Banfield, J.F. (2020): Clades of huge phage from across Earth’s ecosystems, Nature, Vol.578, pp.425-431, doi:10.1038/s41586-020-2007-4.

C-58

Méheust, R., Castelle, C.J., Carnevali, P.B.M., Farag, I.F., He, C., Chen, L.X., Amano, Y., Hug, L.A. and Banfield, J.F. (2020): Groundwater Elusimicrobia are metabolically diverse compared to gut microbiome Elusimicrobia and some have a novel nitrogenase paralog, The ISME Journal, Vol.14, pp.2907-2922, doi:10.1038/s41396-020-0716-1.

C-59

Mochizuki, A., Ishii, E., Miyakawa, K. and Sasamoto, H. (2020): Mudstone redox conditions at the Horonobe Underground Research Laboratory, Hokkaido, Japan: Effects of drift excavation, Engineering Geology, Vol.267, 105496, doi:10.1016/j.enggeo.2020.105496.

C-60

Terashima, M., Endo, T. and Miyakawa, K. (2020): Determination of humic substances in deep groundwater from sedimentary formations by the carbon concentration-based DAX-8 resin isolation technique, Journal of Nuclear Science and Technology, Vol.57, pp.380-387, doi:10.1080/00223131.2019.1688730.

C-61

Bateman, K., Murayama, S., Hanamachi, Y., Wilson, J., Seta, T., Amano, Y., Kubota, M., Ohuchi, Y. and Tachi, Y. (2021): Evolution of the reaction and alteration of mudstone with ordinary Portland cement leachates: Sequential flow experiments and reactive-transport modelling, Minerals, Vol.11, 1026, doi:10.3390/min11091026.

C-62

Jaffe, A.L., Thomas, A.D., He, C., Keren, R., Valentin-Alvarado, L.E., Munk, P., Bouma-Gregson, K., Farag, I.F., Amano, Y., Sachdeva, R., West, P.T. and Banfield, J.F. (2021): Patterns of gene content and co-occurrence constrain the evolutionary path toward animal association in candidate phyla radiation bacteria, mBio, Vol.12, e0052121, doi:10.1128/mbio.00521-21.

C-63

Ueno, A., Tamazawa, S., Tamamura, S., Murakami, T., Kiyama, T., Inomata, H., Amano, Y., Miyakawa, K., Tamaki, H., Naganuma, T. and Kaneko, K. (2021): Desulfovibrio subterraneus sp. nov., a mesophilic sulfate–reducing deltaproteobacterium isolated from a deep siliceous mudstone formation, International Journal of Systematic and Evolutionary Microbiology, Vol.71, doi:10.1099/ijsem.0.004683.

C-64

Amano, Y., Beppu, H., Sato, T., Mochizuki, A., Thomas, B.C. and Banfield, J.F. (2022): Spatial distribution of biofilm-forming Archaea in the deep sedimentary rock environment of the Horonobe area, Hokkaido, Japan, Abstracts of the 35^th Annual Meeting of Japanese Society for Microbial Ecology (JSME), Sapporo, Japan, October-November 2022, pp.161-163.

C-65

Schoelmerich, M.C., Ouboter, H.T., Sachdeva, R., Penev, P.I., Amano, Y., West-Roberts, J., Welte, C.U. and Banfield, J.F. (2022): A widespread group of large plasmids in methanotrophic Methanoperedens archaea, Nature Communications, Vol.13, 7085, doi:10.1038/s41467-022-34588-9.

C-66

Arthur, R., Sasamoto, H., Alt-Epping, P. and Tachi, Y. (2023): Paleoclimate controls on natural tracer profiles in biogenic sedimentary formations of the Horonobe area, Japan, Applied Geochemistry, Vol.155, 105707, doi:10.1016/j.apgeochem.2023.105707.

C-67

Esser, S.P., Rahlff, J., Zhao, W., Predl, M., Plewka, J., Sures, K., Wimmer, F., Lee, J., Adam, P.S., McGonigle, J., Turzynski, V., Banas, I., Schwank, K., Krupovic, M., Bornemann, T.L.V., Figueroa-Gonzalez, P.A., Jarett, J., Rattei, T., Amano, Y., Blaby, I.K., Cheng, J.F., Brazelton, W.J., Beisel, C.L., Woyke, T., Zhang, Y. and Probst, A.J. (2023): A predicted CRISPR-mediated symbiosis between uncultivated archaea, Nature Microbiology, doi:10.1038/s41564-023-01439-2.

C-68

Miyakawa, K. and Nakata., K. (2023): Data of Groundwater Chemistry Obtained in the Horonobe Underground Research Laboratory Project (FY2022), JAEA-Data/Code 2022-013, doi:10.11484/jaea-data-code-2022-013.

C-69

Nishimura, H., Kouduka, M., Fukuda, A., Ishimura, T., Amano, Y., Beppu, H., Miyakawa, K. and Suzuki, Y. (2023): Anaerobic methane-oxidizing activity in a deep underground borehole dominantly colonized by Ca. Methanoperedenaceae, Environmental Microbiology Reports, Vol.15, pp.197-205, doi:10.1111/1758-2229.13146.

C-70

Terashima, M., Endo, T., Kimuro, S., Beppu, H., Nemoto, K. and Amano, Y. (2023): Iron-induced association between selenium and humic substances in groundwater from deep sedimentary formations, Journal of Nuclear Science and Technology, Vol.60, pp.374-384, doi:10.1080/00223131.2022.2111376.

Rock mechanics and engineering technology [M]

M-1

Honda, K., Sakurai, H., Iwasa, K., Suzuki, M. and Matsui, H. (2005): Geostatistical modeling of hydrogeological environment using resistivity distribution measured by various methods, Proceedings of the International Association for Mathematical Geology (IAMG’05): GIS and Spatial Analysis, Toronto, Canada, August 2005, Vol.1, pp.393-398.

M-2

Matsui, H. (2005): Study on the Application of Poroelasticity for Sedimentary Rock Distributed in Horonobe, JNC TN5400 2005-013.

M-3

Mito, Y., Chang, C.S., Aoki, K., Matsui, H., Niunoya, S. and Minami, M. (2007): Evaluation of fracturing process of soft rocks at great depth by AE measurement and DEM simulation, Proceedings of the 11^th Congress of the International Society for Rock Mechanics (ISRM2007), Lisbon, Portugal, July 2007, ISRM-11CONGRESS-2007-059.

M-4

Tsusaka, K., Tanimoto, C., Mitarashi, Y. and Aoki, T. (2007): A Study on development of loosening zone and allowable limit of deformation in tunneling, Proceedings of the 11^th Congress of the International Society for Rock Mechanics (ISRM2007), Lisbon, Portugal, July 2007, ISRM-11CONGRESS-2007-167.

M-5

Hatanaka, K., Morioka, H. and Fukushima, T. (2008): Development of engineering technology for sedimentary rock in “Horonobe URL Project”, Japan, Proceedings of the 12^th International High-Level Radioactive Waste Management Conference 2008 (IHLRWM2008), Las Vegas, NV, USA, September 2008, pp.250-257.

M-6

Tsusaka, K., Yamazaki, M., Hatsuyama, Y. and Yamamoto, T. (2008): Proposal of a practical guide of convergence measurements in Horonobe Underground Research Laboratory, Proceedings of the 42^nd U.S. Rock Mechanics Symposium and 2^nd U.S.-Canada Rock Mechanics Symposium, San Francisco, CA, USA, June 2008, ARMA 08-027.

M-7

Sanada, H., Matsui, H. and Fujii, Y. (2009): Mechanical properties of siliceous rocks around Horonobe URL from triaxial compression and isotropic consolidation tests, Proceedings of the ISRM International Symposium on Rock Mechanics “Rock Characterization, Modelling and Engineering Design Methods” (SINOROCK2009), Hong Kong, China, May 2009, ISRM-SINOROCK-2009-049.

M-8

Sanada, H., Sugita, Y. and Fujii, Y. (2009): Deformation and failure behavior of rock mass around the ventilation shaft in Horonobe URL, Proceedings of the 3^rd International Workshop and Conference on Earth Resources Technology 2009, Sapporo, Japan, May 2009, pp.149-158.

M-9

Sugita, Y., Sanada, H. and Matsui, H. (2009): Geomechanical model for sedimentary soft rock based on surface-based investigations, Proceedings of the ISRM International Symposium on Rock Mechanics “Rock Characterization, Modelling and Engineering Design Methods” (SINOROCK2009), Hong Kong, China, May 2009, ISRM-SINOROCK-2009-053.

M-10

Tokiwa, T., Ishii, E., Funaki, H., Tsusaka, T. and Sanada, H. (2009): Relationship between fault system estimated by fault-striation analysis of drilling cores and rock mass behavior induced by shaft excavation in the Horonobe area, northern Japan, Proceedings of the 3^rd International Workshop and Conference on Earth Resources Technology 2009, Sapporo, Japan, May 2009, pp.159-168.

M-11

Tsusaka, T., Yamasaki, M. and Hatsuyama, Y. (2009): Rock deformation and support load in shaft sinking in Horonobe URL Project, Proceeding of the ISRM Regional Symposium on Rock Engineering in Difficult Ground Conditions; Soft Rocks and Karst (EUROCK2009), Cavtat, Croatia, October 2009, ISRM-EUROCK-2009-093, pp.589-594.

M-12

Sanada, H., Nakamura, T. and Sugita, Y. (2010): In situ stress measurements in siliceous mudstones at Horonobe Underground Research Laboratory, Japan, Proceedings of the ASME 13^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2010), Tsukuba, Japan, October 2010, ICEM2010-40019, pp.31-39, doi:10.1115/ICEM2010-40019.

M-13

Fujita, T., Sugita, Y. and Toida, K. (2011): Experimental studies on penetration of pulverized clay-based grout, Journal of Energy and Power Engineering, Vol.5, pp.419-427, doi:10.17265/1934-8975/2011.05.005.

M-14

Tokiwa, T., Tsusaka, K., Ishii, E., Sanada, H., Tominaga, E., Hatsuyama, Y. and Funaki, H. (2011): Influence of a fault system on rock mass response to shaft excavation in soft sedimentary rock, Horonobe area, northern Japan, International Journal of Rock Mechanics and Mining Sciences, Vol.48, pp.773-781, doi:10.1016/j.ijrmms.2011.04.007.

M-15

Tsusaka, K., Inagaki, D., Koike, M., Ijiri, Y. and Hatsuyama, Y. (2011): A study on mechanical behaviors of concrete lining and rock caused by shaft sinking at the Horonobe Underground Research Laboratory, Proceedings of the 12^th International Congress on Rock Mechanics, Beijing, China, October 2011, ISRM-12CONGRESS-2011-043, pp.305-308.

M-16

Fujita, T., Kawaguchi, M., Walker, C., Sasamoto, H., Yui, M. and Onishi, Y. (2012): Development of grouting technologies for HLW disposal in Japan: (1) Overall program and key engineering technologies, Proceedings of the 7^th Asian Rock Mechanics Symposium (ARMS-7), Seoul, Korea, October 2012, ISRM-ARMS7-2012-071, pp.675-681.

M-17

Sanada, H., Nakamura, T. and Sugita, Y. (2012): Mine-by experiment in a deep shaft in Neogene sedimentary rocks at Horonobe, Japan, International Journal of Rock Mechanics and Mining Sciences, Vol.56, pp.127-135, doi:10.1016/j.ijrmms.2012.07.029.

M-18

Sanada, H., Sugita, Y. and Kashiwai, Y. (2012): Development of a multi-interval displacement sensor using Fiber Bragg Grating technology, International Journal of Rock Mechanics and Mining Sciences, Vol.54, pp.27-36, doi:10.1016/j.ijrmms.2012.05.020.

M-19

Tsusaka, K., Inagaki, D., Tokiwa, T., Yokota, H., Nago, M., Matsubara, M. and Shigehiro, M. (2012): An observational construction management in the Horonobe Underground Research Laboratory Project, Proceedings of the ITA-AITES World Tunnel Congress 2012 (WTC2012) / 38^th General Assembly, Bangkok, Thailand, May 2012, A-T11-43.

M-20

Aoyagi, K., Tsusaka, K., Tokiwa, T., Kondo, K. and Inagaki, D. (2013): Geomechanical assessment of excavation damaged zone in the Horonobe Underground Research Laboratory, Japan, Proceedings of the 13^th Japan Symposium on Rock Mechanics and the 6^th Japan-Korea Joint Symposium, Ginowan, Japan, September 2013, pp.905-910.

M-21

Aoyagi, K., Tsusaka, K., Tokiwa, T., Kondo, K., Inagaki, D. and Kato, H. (2013): A study of the regional stress and the stress state in the galleries of the Horonobe Underground Research Laboratory, Proceedings of the 6^th International Symposium on In-Situ Rock Stress (RS2013), Sendai, Japan, August 2013, pp.331-338.

M-22

Tsusaka, K., Inagaki, D., Nago, M., Aoki, T. and Shigehiro, M. (2013): Rock spalling and countermeasures in shaft sinking at the Horonobe Underground Research Laboratory, Proceedings of the 6^th International Symposium on In-Situ Rock Stress (RS2013), Sendai, Japan, August 2013, pp.339-346.

M-23

Tsusaka, K., Inagaki, D., Nago, M., Kamemura, K., Matsubara, M. and Shigehiro, M. (2013): Relationship between rock mass properties and damage of a concrete lining during shaft sinking in the Horonobe Underground Research Laboratory Project, Proceedings of the ITA-AITES World Tunnel Congress 2013 (WTC2013) / 39^th General Assembly, Geneva, Switzerland, May-June 2013, pp.2014-2021.

M-24

Tsusaka, K., Inagaki, D., Nago, M., Koike, M., Matsubara, M. and Sugawara, K. (2013): Influence of rock sampling on concrete lining in shaft sinking at the Horonobe Underground Research Laboratory, Proceedings of the 13^th Japan Symposium on Rock Mechanics and the 6^th Japan-Korea Joint Symposium, Ginowan, Japan, September 2013, pp.911-916.

M-25

Tsusaka, K. and Tokiwa, T. (2013): Influence of fracture orientation on excavatability of soft sedimentary rock using a hydraulic impact hammer: A Case study in the Horonobe Underground Research Laboratory, Tunnelling and Underground Space Technology, Vol.38, pp.542-549, doi:10.1016/j.tust.2013.08.007.

M-26

Aoyagi, K., Tsusaka, K., Kondo, K. and Inagaki, D. (2014): Quantitative assessment of an excavation damaged zone from variations in seismic velocity and fracture distribution around a gallery in the Horonobe Underground Research Laboratory, In: Alejano, R., Perucho, Á., Olalla, C. and Jiménez, R. (Eds.) “Rock Engineering and Rock Mechanics: Structures in and on Rock Masses”, 2014 ISRM European Rock Mechanics Symposium (EUROCK2014), Vigo, Spain, May 2014, ISRM-EUROCK-2014-077, pp.487-492.

M-27

Aoyagi, K., Tsusaka, K., Nohara, S., Kubota, K., Tokiwa, T., Kondo, K. and Inagaki, D. (2014): Hydrogeomechanical investigation of an excavation damaged zone in the Horonobe Underground Research Laboratory, Proceedings of the 8^th Asian Rock Mechanics Symposium (ARMS-8), Sapporo, Japan, October 2014, ISRM-ARMS8-2014-329, pp.2804-2811.

M-28

Asahina, D., Aoyagi, K., Tsusaka, K., Houseworth, J. and Birkholzer, J. (2014): Modeling damage processes in laboratory tests at the Horonobe Underground Research Laboratory, Proceedings of the 8^th Asian Rock Mechanics Symposium (ARMS-8), Sapporo, Japan, October 2014, ISRM-ARMS8-2014-330, pp.2812-2820.

M-29

Tsusaka, K., Inagaki, D., Nago, M. and Ijiri, Y. (2014): A study of mechanical stability of support elements and surrounding rock mass during shaft sinking through a fault, Proceedings of the 8^th Asian Rock Mechanics Symposium (ARMS-8), Sapporo, Japan, October 2014, ISRM-ARMS8-2014-154, pp.1311-1319.

M-30

Tsusaka, K., Inagaki, D., Niunoya, S. and Jo, M. (2014): An investigation on mechanical properties of in-situ rock mass at the Horonobe Underground Research Laboratory, Proceedings of the 8^th Asian Rock Mechanics Symposium (ARMS-8), Sapporo, Japan, October 2014, ISRM-ARMS8-2014-067.

M-31

Inagaki, D., Tsusaka, K., Aoyagi, K., Nago, M., Ijiri, Y. and Shigehiro, M. (2015): Effective 3D data visualization in deep shaft construction, Proceedings of the ITA-AITES World Tunnel Congress 2015 (WTC2015) / 41^st General Assembly, Dubrovnik, Croatia, May 2015, wtc2015_full_aoyagi.

M-32

Ishii, E., Hashimoto, Y. and Inagaki, D. (2015): Washout of clay-rich gouge in a pre-grouted fault zone and increase in groundwater inflow during tunnel excavation in Neogene siliceous mudstone (Horonobe, Japan), Proceedings of the 10^th Asian Regional Conference of International Association for Engineering Geology and the Environment (IAEG ARS 2015), Uji, Japan, September 2015, Tp3-P02 1076277.

M-33

Aoyagi, K., Nago, M., Kamemura, K. and Sugawara, K. (2016): Estimation of rock mass stress state based on convergence measurement during gallery excavation, Proceedings of the 9^th Asian Rock Mechanics Symposium (ARMS-9), Bali, Indonesia, October 2016 (USB Flash Drive).

M-34

Aoyagi, K., Tokiwa, T. and Fujita, T. (2016): A study of efficient excavation limiting the extent of an excavation damaged zone in Horonobe URL, In: Ulusay, R. (Ed.) “Rock Mechanics and Rock Engineering: From the Past to the Future”, 2016 ISRM European Rock Mechanics Symposium (EUROCK2016), Ürgüp, Turkey, August 2016, ISRM-EUROCK-2016-165, pp.1023-1028.

M-35

Motoshima, T., Fujita, T., Aoyagi, K., Shirase, M. and Nago, M. (2016): Design and verification of support system for underground excavations under anisotropic stress conditions, Proceedings of the 7^th International Symposium on In-Situ Rock Stress (RS2016), Tampere, Finland, May 2016, ISRM-ISRS-2016-024.

M-36

Tokiwa, T., Aoyagi, K. and Fujita, T. (2016): Excavation damaged zone inferred by geophysical surveys on drift floor of Horonobe URL, In: Ulusay, R. (Ed.) “Rock Mechanics and Rock Engineering: From the Past to the Future”, 2016 ISRM European Rock Mechanics Symposium (EUROCK2016), Ürgüp, Turkey, August 2016, ISRM-EUROCK-2016-144, pp.901-906.

M-37

Asahina, D., Aoyagi, K., Kim, K., Birkholzer, J., Birkholzer, J.T. and Bolander, J.E. (2017): Elastically-homogeneous lattice models of damage in geomaterials, Computers and Geotechnics, Vol.81, pp.195-206, doi:10.1016/j.compgeo.2016.08.015.

M-38

Hashiba, K., Fukui, K., Sugita, Y. and Aoyagi, K. (2017): Mechanical and rheological characteristics of the siliceous mudstone at the Horonobe Underground Research Laboratory site, Proceedings of the ITA-AITES World Tunnel Congress 2017 (WTC 2017), Bergen, Norway, June 2017, 14649.

M-39

Nago, M., Motoshima, T., Miyakawa, K., Kanie, S. and Sanoki, S. (2017): Three-dimensional visualization of methane concentration distribution in tunnels to increase underground safety, Proceedings of the ITA-AITES World Tunnel Congress 2017 (WTC 2017), Bergen, Norway, June 2017, 14712.

M-40

Tsuji, M., Okihara, M., Nakashima, H., Sato, T. and Aoyagi, K. (2017): Latest rock grouting technologies under sea water in Nordic countries and Japan, Proceedings of the 6^th East Asia Forum on Radwaste Management Conference (EAFORM2017)，Osaka, Japan, November 2017, 5A-3.

M-41

Aoyagi, K., Miyara, N., Ishii, E., Nakayama, M. and Kimura, S. (2018): Evolution of the excavation damaged zone around a modelled disposal pit: Case study at the Horonobe Underground Research Laboratory, Japan, Proceedings of the 13^th SEGJ International Symposium, Tokyo, Japan, November 2018, doi:10.1190/SEGJ2018-114.1.

M-42

Otsuka, Y., Ishikawa, T., Tajima, K., Wada, T., Aydan, Ö., Tokashiki, N., Sato, T. and Aoyagi, K. (2018): Rock mass property evaluation based on the borehole wall images taken by using an ultrasonic scanner (USS), Journal of Nepal Geological Society, Vol.55, Proceedings of the 11^th IAEG Asian Regional Conference (ARC-11) on “Engineering Geology for Geodisaster Management”, Kathmandu, Nepal, November 2017, pp.1-6, doi:10.3126/jngs.v55i1.22782.

M-43

Sato, T., Aoyagi, K., Matsuzaki, Y., Miyara, N. and Miyakawa, K. (2018): Status of Rock dynamics study in Horonobe Underground Research Laboratory, Japan, In: Li, C., Li, X. and Zhang, Z.-X. (Eds.) “Rock Dynamics and Applications 3”, Proceedings of the 3^rd International Conference on Rock Dynamics and Applications (RocDyn-3), Trondheim, Norway, June 2018, pp.575-580.

M-44

Tokiwa, T., Tsusaka, K. and Aoyagi, K. (2018): Fracture characterization and rock mass damage induced by different excavation methods in the Horonobe URL of Japan, International Journal of Civil Engineering, Vol.16, pp.371-381, doi:10.1007/s40999-016-0126-y.

M-45

Aoyagi, K., Tokiwa, T., Sato, T. and Hayano, A. (2019): Fracture characterization and rock mass behavior induced by blasting and mechanical excavation of shafts in Horonobe Underground Research Laboratory, Proceedings of the 2019 Rock Dynamics Summit (RDS2019), Nago, Japan, May 2019, ISRM-RDS-2019-114, pp.682-687.

M-46

Kubota, K., Aoyagi, K. and Sugita, Y. (2019): Evaluation of the excavation disturbed zone of sedimentary rock in the Horonobe Underground Research Laboratory, Proceedings of the 2019 Rock Dynamics Summit (RDS2019), Nago, Japan, May 2019, ISRM-RDS-2019-122, pp.729-733.

M-47

Martikainen, J., Tsuji, M., Nakashima, H., Okihara, M., Aoyagi, K. and Sato, T. (2019): Characterisation of colloidal silica grout under saline groundwater: Penetration theory and injection tests a fracture test system, Proceedings of the 9^th Nordic Grouting Symposium (NGS2019), Helsinki, Finland, September 2019, ISRM-NGS-2019-10.

M-48

Ogata, S., Yasuhara, H., Aoyagi, K. and Kishida, K. (2019): Coupled THMC analysis for predicting hydro-mechanical evolution in siliceous mudstone, Proceedings of the 53^rd US Rock Mechanics / Geomechanics Symposium 2019, New York, NY, USA, June 2019, ARMA-2019-1583, pp.701-706.

M-49

Okazaki, Y., Hayashi, H., Aoyagi, K., Morimoto, S. and Shinji, M. (2019): Effects of heterogeneity of geomechanical properties tunnel support stress during tunnel excavation, Proceedings of 5^th ISRM Young Scholars’ Symposium on Rock Mechanics and International Symposium on Rock Engineering for Innovative Future (YSRM2019 and REIF2019), Ginowan, Japan, December 2019, ISRM-YSRM-2019-169.

M-50

Tsuji, M., Aoyagi, K., Nakajima, H., Okihara, M. and Sato, T. (2019): Characterisation of colloidal silica grout under saline groundwater - Overall results for 3-year research project, Proceedings of the 9^th Nordic Grouting Symposium (NGS2019), Helsinki, Finland, September 2019, ISRM-NGS-2019-07.

M-51

Tsuji, M., Nakashima, H., Saito, A., Okihara, M. and Sato, T. (2019): Study on characterization of colloidal silica grout for rock excavation under saline groundwater, Proceedings of the 45^th Annual Waste Management Conference (WM2019): Encouraging Young Men & Women to Achieve Their Goals in Radwaste Management, Phoenix, AZ, USA, March 2009, Vol.7, 19332, pp.4749-4763.

Repository technology [R]

R-1

Aoyagi, S., Tanai, K., Matsui, H., Kawakami, S. and Yui, M. (2005): Studies on design of the engineered barrier system and mechanical stability of rock based on surface-based investigation of the Horonobe URL Project, Proceedings of the International Conference on Nuclear Energy System for Future Generation and Global Sustainability (GLOBAL2005), Tsukuba, Japan, October 2005 (CD-ROM).

R-2

Nakayama, M., Iriya, K., Fujishima, A., Mihara, M., Hatanaka, K., Kurihara, Y. and Yui, M. (2006): Development of low alkaline cement considering pozzolanic reaction for support system in HLW repository construction, In: Van Iseghem, P. (Ed.) “Scientific Basis for Nuclear Waste Management XXIX”, 29^th International Symposium on Scientific Basis for Nuclear Waste Management (MRS2005), Ghent, Belgium, September 2005, MRS Symposium Proceedings, Vol.932, pp.159-166, doi:10.1557/PROC-932-110.1.

R-3

Sato, H. (2007): Thermodynamic data of water on smectite surface and those application to swelling pressure of compacted bentonite, Proceedings of the International Workshop on Mobile Fission and Activation Products in Nuclear Waste Disposal, La Baule, France, January 2007, pp.173-184.

R-4

Sato, H. (2007): Thermodynamic understanding on swelling pressure of bentonite buffer, Proceedings of 15th International Conference on Nuclear Engineering (ICONE-15), Nagoya, Japan, April 2007, ICONE-15-10207.

R-5

Sato, H. (2008): Thermodynamic model on swelling of bentonite buffer and backfill materials, Physics and Chemistry of the Earth, Parts A/B/C, Vol.33, Suppl.1, pp.S538-S543, doi:10.1016/j.pce.2008.10.022.

R-6

Sato, H. (2009): A thermodynamic approach on the effect of salt concentration on swelling pressure of water-saturated bentonite, In: Hyatt, N.C., Pickett, D.A. and Rebak, R.B. (Eds.) “Scientific Basis for Nuclear Waste Management XXXII”, 2008 MRS Fall Meeting, Boston, MA, USA, December 2008, MRS Symposium Proceedings, Vol.1124, pp.307-312, doi:10.1557/PROC-1124-Q07-11.

R-7

Sato, H. (2009): Quantification of exchangeable cations in interlayer of Tsukinuno sodium-montmorillonite, In: Burakov, B.E. and Aloy, A.S. (Eds.) “Scientific Basis for Nuclear Waste Management XXXIII”, 33^rd International Symposium on Scientific Basis for Nuclear Waste Management (MRS'09), St. Petersburg, Russian Federation, May 2009, MRS Symposium Proceedings, Vol.1193, pp.529-536, doi:10.1557/PROC-1193-529.

R-8

Nakayama, M., Sato, H., Sugita, Y., Ito, S., Minamide, M. and Kitagawa, Y. (2010): Low alkaline cement used in the construction of a gallery in the Horonobe Underground Research Laboratory, Proceedings of the ASME 13^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2010), Tsukuba, Japan, October 2010, ICEM2010-40038, pp.51-56, doi:10.1115/ICEM2010-40038.

R-9

Sato, H. (2010): An analytical model on the sealing performance of space for the design of buffer material and backfill material, Proceedings of the ASME 13^th International Conference on Environmental Remediation and Radioactive Waste Management (ICEM2010), Tsukuba, Japan, October 2010, ICEM2010-40067, pp.175-184, doi:10.1115/ICEM2010-40067.

R-10

Noguchi, A., Kishi, H., Hatanaka, K. and Naito, M. (2011): Mix design of low pH cement shotcrete in high level radioactive waste repositories, Proceedings of the 19^th International Conference on Nuclear Engineering (ICONE-19), Suita, Japan, October 2011, ICONE19-43532, doi:10.1299/jsmeicone.2011.19._ICONE1943_216.

R-11

Hitomi, T., Iriya, K., Nakayama, M. and Sato, H. (2013): Study on long-term leaching behavior of low alkaline cement, Proceedings of the 3^rd International Conference on Sustainable Construction Materials and Technologies (SCMT-3), Kyoto, Japan, August 2013, e0179.

R-12

Jo, M., Ono, M., Nakayama, M., Asano, H. and Ishii, T. (2019): A study of methods to prevent piping and erosion in buffer materials intended for a vertical deposition hole at the Horonobe Underground Research Laboratory, In: Norris, S., Neeft, E.A.C. and Van Geet, M. (Eds.) “Multiple Roles of Clays in Radioactive Waste Confinement“, Geological Society Special Publications, Vol.482, doi:10.1144/SP482.7.

R-13

Bateman, K., Amano, Y., Kubota, M., Ouchi, Y. and Tachi, Y. (2021): Reaction and alteration of mudstone with ordinary portland cement and low alkali cement pore fluids, Minerals, Vol.11, “Clay Mineral Transformations after Bentonite/Clayrocks and Heater/Water Interactions from Lab and Large-Scale Tests”, 588, doi:10.3390/min11060588.

R-14

Fujimoto, S., Tsuchiya, H., Ogawa, S., Iida, Y. and Taniguchi, N. (2021): Stress corrosion cracking of copper in swollen bentonite simulating nuclear waste disposal environment, Materials and Corrosion, Vol.72, pp.333-338, doi:10.1002/maco.202011878.

R-15

Kitayama, A., Taniguchi, N. and Mitsui, S. (2021): Electrochemical behavior of carbon steel with bentonite/sand in saline environment, Materials and Corrosion, Vol.72, pp.211-217, doi:10.1002/maco.202011689.

R-16

Ogawa, Y., Suzuki, S., Taniguchi, N., Kawasaki, M., Suzuki, H. and Takahashi, R. (2021): Corrosion resistance of a cast steel overpack for high-level radioactive waste disposal in Japan, Materials and Corrosion, Vol.72, pp.52-66, doi:10.1002/maco.202011781.

R-17

Ozaki, Y., Iwatsuki, T., Taniguchi, N. and Ohno, H. (2021): International joint research on thermal-hydraulic-mechanical-chemical modelling of engineering/geological systems at Horonobe URL, Japan, Abstracts of the INMM & ESARDA 2021 Joint Annual Meeting (Virtual Conference).

Safety assessment [S]

S-1

Xia, X., Shibata, M., Kitamura, A. and Kamei, G. (2004): A systematic study on cesium sorption on a sedimentary rock towards reliable safety assessment methodology for HLW disposal, Proceedings of the 6^th International Conference on Nuclear and Radiochemistry (NRC-6), Aachen, Germany, pp.779-781.

S-2

Xia, X., Kamei, G., Iijima, K. and Shibata, M. (2006): Selenium sorption in a sedimentary rock/saline groundwater system and spectroscopic evidence, In: Van Iseghem, P. (Ed.) “Scientific Basis for Nuclear Waste Management XXIX”, 29^th International Symposium on Scientific Basis for Nuclear Waste Management (MRS2005), Ghent, Belgium, September 2005, MRS Symposium Proceedings, Vol.932, pp.933-941, doi:10.1557/PROC-932-17.1.

S-3

Ochs, M., Kunze, S., Saito, Y., Kitamura, A., Tachi, Y. and Yui, M. (2008): Application of the Sorption Database to Kd-Setting for Horonobe Rocks, JAEA-Research 2008-017, doi:10.11484/jaea-research-2008-017.

S-4

Saito, Y., Ochs, M., Kunze, S., Kitamura, A., Tachi, Y. and Yui, M. (2008): Evaluating and Categorizing the Reliability of Distribution Coefficient Values in the Sorption Database, 2, JAEA-Technology 2008-018, doi:10.11484/jaea-technology-2008-018.

S-5

Sato, H. (2009): Activation Energies of Diffusion for I and Cs in Interlayer of Smectite, Mobile Fission and Activation Products in Nuclear Waste Disposal, Workshop Proceedings, La Baule, France, January 2007, NEA No.6310, pp.157-171.

S-6

Sato, H. and Hatanaka, K. (2009): Proceedings of the International Information Exchange Meeting on Diffusion Phenomena in Bentonite and Rock: Aiming at the Safety Assessment of the Geological Disposal: July 18, 2006, Horonobe Underground Research Center, Horonobe-cho, Teshio-gun, Hokkaido, Japan, JAEA-Conf 2008-001, doi:10.11484/jaea-conf-2008-001.

S-7

Takahashi, H., Seida, Y. and Yui, M. (2009): 3D X-ray CT and diffusion measurements to assess tortuosity and constrictivity in a sedimentary rock, diffusion-fundamentals.org, Vol.11, Special Issue “Diffusion Fundamentals III”, 89, pp.1-11.

S-8

Tanaka, S., Noda, N., Higashihara, T., Sato, S., Kozaki, T., Sato, H. and Hatanaka, K. (2008): Kinetics behavior of water as migration media in compacted montmorillonite using H₂¹⁸O and applying electric potential gradient, Physics and Chemistry of the Earth, Parts A/B/C, Vol.33, Suppl.1, pp.S163-S168, doi:10.1016/j.pce.2008.10.043.

S-9

Lim, D.-H., Hatanaka, K. and Ishii, E. (2010): Site characterization & preliminary performance assessment calculation applied to JAEA-Horonobe URL site of Japan, Transactions of the Korean Nuclear Society Autumn Meeting, Jeju, Korea, October 2010, pp.179-180.

S-10

Seida, Y., Terashima, M., Tachi, Y., Iijima, K., Nakazawa, T., Yamada, N. and Yui, M. (2010): Sorption and diffusion of Eu in sedimentary rock in the presence of humic substance, Radiochimica Acta, Vol.98, pp703-709, doi:10.1524/ract.2010.1771.

S-11

Tanaka, S., Noda, N., Sato, S., Kozaki, T., Sato, H. and Hatanaka, K. (2010): Effect of ionic strength on Migration of chloride ions and water in compacted montmorillonite by electrokinetic method, Proceedings of the 4^th International Meeting on the Clays in Natural & Engineered Barriers for Radioactive Waste Confinement, Nantes, France, March 2010, pp.163-164.

S-12

Kurikami, H., Niizato, T. and Yasue, K. (2011): A study on timeframe definition and reference evolution of the geological system for safety assessment: Case study on the Horonobe URL site, Proceedings of the 19^th International Conference on Nuclear Engineering (ICONE-19), Suita, Japan, October 2011, ICONE19-43731, doi:10.1299/jsmeicone.2011.19._ICONE1943_283.

S-13

Tachi, Y., Yotsuji, K., Seida, Y. and Yui, M. (2011): Diffusion and sorption of Cs⁺, I^- and HTO in samples of the argillaceous Wakkanai Formation from the Horonobe URL: Clay-based modelling approach, Geochimica et Cosmochimica Acta, Vol.75, pp.6742-6759, doi:10.1016/j.gca.2011.08.039.

S-14

Tanaka, S., Noda, N., Sato, S., Kozaki, T., Sato, H. and Hatanaka, K. (2011): Electrokinetic study of migration of anions, cations, and water in water-saturated compacted sodium montmorillonite, Journal of Nuclear Science and Technology, Vol.48, pp.454-462, doi:10.1080/18811248.2011.9711719.

S-15

Terashima, M., Seida, Y., Iwatsuki, T., Iijima, K., Yoshikawa, H., Yui, M. and Nagao, S. (2012): Europium-binding abilities of dissolved humic substances isolated from deep groundwater in Horonobe area, Hokkaido, Japan, Journal of Nuclear Science and Technology, Vol.48, pp.804-815, doi:10.1080/00223131.2012.703944.

S-16

Ochs, M., Tachi, Y., Trudel, D. and Suyama, T. (2013): K_d Setting Approaches for Horonobe Mudstone Systems: Applications of TSMs and Semi-quantitative Estimation Procedures, JAEA-Research 2012-044, doi:10.1184/jaea-research-2012-044.

S-17

Shimoda, S., Nakazawa, T., Kato, H., Tachi, Y. and Seida, Y. (2014): The effect of alkaline alteration on sorption properties of sedimentary rock, In: Duro, L., Giménez, J., Casas, I. and De Pablo, J. (Eds.) “Scientific Basis for Nuclear Waste Management XXXVII”, 37^th International Symposium on Scientific Basis for Nuclear Waste Management (MRS2013), Barcelona, Spain, September-October 2013, MRS Symposium Proceedings, Vol.1665, pp.179-184, doi:10.1557/opl.2014.644.

S-18

Tachi, Y., Ochs, M., Suyama, T. and Trudel, D. (2014): K_d setting approach through semi-quantitative estimation of procedures and thermodynamic sorption models: A case study for Horonobe URL conditions, In: Duro, L., Giménez, J., Casas, I. and De Pablo, J. (Eds.) “Scientific Basis for Nuclear Waste Management XXXVII”, 37^th International Symposium on Scientific Basis for Nuclear Waste Management (MRS2013), Barcelona, Spain, September-October 2013, MRS Symposium Proceedings, Vol.1665, pp.149-155, doi:10.1557/opl.2014.640.

S-19

Yokota, H. and Tanaka, S. (2014): Preliminary analysis of dipole tracer migration experiments in fractured sedimentary rock at Horonobe URL of Japan, Proceedings of the 19^th Pacific Basin Nuclear Conference (PBNC2014), Vancouver, Canada, August 2014, PBNC2014-385.

S-20

Tanaka, S., Yokota, H., Ohno, H. Nakayama, M., Fujita, T., Takiya, H., Watanabe, N. and Kozaki, T. (2015): Dipole tracer migration and diffusion tests in fractured sedimentary rock at Horonobe URL, Proceedings of 23^rd International Conference on Nuclear Engineering (ICONE-23), ICONE23-1860, doi:10.1299/jsmeicone.2015.23._ICONE23-1_411.

S-21

Tachi, Y., Suyama, T., Yotsuji, K., Ishii, Y. and Takahashi, H. (2016): Clay-based modelling approach to diffusion and sorption in the argillaceous rock form the Horonobe URL: Application to Ni(II), Am(III), and Se(IV), The Clay Minerals Society Workshop Letter Series, Vol.21, Chap.19, pp.241-250, doi:10.1346/CMS-WLS-21-19.

S-22

Ohnuki, T., Kozai, N., Sakamoto, F., Utsunomiya, S. and Kato, K. (2017): Sorption behavior of Np(V) on microbe pure culture and consortia, Chemistry Letters, Vol.46, pp.771-774, doi:10.1246/cl.170068.

S-23

Saito, T., Aoyagi, N. and Terashima, M. (2017): Europium binding to humic substances extracted from deep underground sedimentary groundwater studied by time-resolved laser fluorescence spectroscopy, Journal of Nuclear Science and Technology, Vol.54, pp.444-451, doi:10.1080/00223131.2016.1274688.

S-24

Iwatsuki, T. and Ishii, E. (2019): Comprehensive study of the migration property in representative rock of Japan at underground research laboratories, Book of Abstracts, 17^th International Conference on the Chemistry and Migration Behavior of Actinides and Fission Products in the Geosphere (Migration2019), Uji, Japan, September 2019, B5-1.

S-25

Tachi, Y., Takeda, M., Ohno, H., Ito, T., Sato, T. and Nemoto, K. (2019): In situ diffusion experiment in mudstone at the Horonobe URL: Comparative study between in situ and laboratory tests, Book of Abstracts, 17^th International Conference on the Chemistry and Migration Behavior of Actinides and Fission Products in the Geosphere (Migration2019), Uji, Japan, September 2019, PB-5-3.

S-26

Takeda, M., Ishii, E., Ohno, H., Tachi, Y., Ito, T. and Nemoto, K. (2019): Evaluating the mass transport characteristics for fault zone in mudstone at the Horonobe Underground Research Laboratory, Book of Abstracts, 17^th International Conference on the Chemistry and Migration Behavior of Actinides and Fission Products in the Geosphere (Migration2019), Uji, Japan, September 2019, PB-5-2.

S-27

Zhao, Q., Saito, T., Miyakawa, K., Sasamoto, H., Kobayashi, T. and Sasaki, T. (2022): Sorption of Cs⁺ and Eu³⁺ ions onto sedimentary rock in the presence of gamma-irradiated humic acid, Journal of Hazardous Materials, Vol.428, 128211, doi:10.1016/j.jhazmat.2021.128211.