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Oral presentation

Fracture characterization induced by gallery excavation through soft sedimentary rock, Horonobe area, northern Japan

Tokiwa, Tetsuya; Tsusaka, Kimikazu; Matsubara, Makoto*; Ishikawa, Taiki*; Ogawa, Daisuke*

no journal, , 

no abstracts in English

Oral presentation

The Spatial distribution of initial $$^{87}$$Sr/$$^{86}$$Sr ratios inside the Toki granite, Central Japan; Implication for the intrusion and cooling process of a granitic pluton

Yuguchi, Takashi; Tsuruta, Tadahiko; Kunimaru, Takanori; Nishiyama, Tadao*

no journal, , 

no abstracts in English

Oral presentation

The Process of fault rocks growth in the Mizunami Underground Research Laboratory site area

Kuboshima, Koji; Sasao, Eiji

no journal, , 

no abstracts in English

Oral presentation

An Attempt at quantitative estimation of the uplift rate by using of analogue model experiments; A Case study of Horonobe area, northern Hokkaido

Matsuzaki, Tatsuji; Tokiwa, Tetsuya; Nakatsukasa, Masashi*; Yamada, Yasuhiro*; Akamine, Shinnosuke*; Amano, Kenji; Niizato, Tadafumi

no journal, , 

no abstracts in English

Oral presentation

Noble gas isotopes as a tool for investigating and/or mapping concealed active faults with no surface expression

Umeda, Koji; Kusano, Tomohiro; Asamori, Koichi

no journal, , 

Geochemical findings from the observation of fault gas isotopes before and after faulting suggest that helium isotopes can be regarded as a tool for investigating and/or mapping concealed active faults with no surface expression.

Oral presentation

An Externalization of decision-making processes and logic structure in the geoscientific investigation, in the case of an investigation of uplift and denudation

Niizato, Tadafumi; Osawa, Hideaki; Ishimaru, Tsuneari; Doke, Ryosuke*; Nakayasu, Akio

no journal, , 

An externalization of decision-making processes and logic structure by using knowledge engineering methodology and Toulmin's argument model, in the case of geoscientific investigation related to uplift and denudation.

Oral presentation

Fault zone characteristics between two faults (Gero and Yugamine Faults of the Atera Fault System) arranged in parallel

Niwa, Masakazu; Mizuochi, Yukihiro*; Tanase, Atsushi*

no journal, , 

We described features of fault zones where active faults are arranged in parallel for understanding the interaction of the two faults. We selected the Atera Fault System in central Japan as a case study. In the studied area, two sets of fault zones, subparallel (NW-SE to E-W trend) and high-angle oblique (NE-SE to N-S trend) to the active fault planes, are developed. The fault zones of NW-SE to E-W trend cut those of NE-SE to N-S trend and trace more recent fault activities.

Oral presentation

Relationship of the fault gouge ruptured by the earthquake in eastern Fukushima on April 11, 2011 and element mobility in the fault zone

Otani, Tomoyuki*; Yamashita, Mitsumasa*; Kojima, Satoru*; Wakai, Shoji*; Kakamu, Kazuhiko

no journal, , 

no abstracts in English

Oral presentation

Technical support for planning and installation of simple ground repository; FY2011 status of support activities for promotion of decontamination in the Fukushima Environmental Safety Center, JAEA

Abe, Hironobu; Ikeda, Koki; Mikake, Shinichiro; Nagasaki, Yasushi; Niizato, Tadafumi; Asazuma, Shinichiro; Aoki, Isao; Ishikawa, Nobuyuki; Ishikawa, Hiroyasu; Ishizaki, Nobuhiro; et al.

no journal, , 

no abstracts in English

Oral presentation

Microstructure observation of oriented samples from fault zone using scanning electron microscope

Nakayama, Kazuhiko; Shimada, Koji; Seshimo, Kazuyoshi; Tanaka, Yoshihiro; Kametaka, Masao*; Okazaki, Kazuhiko*; Shimogama, Kota*; Hayashi, Toshio*

no journal, , 

no abstracts in English

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