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JAEA Reports

Excavation survey on the eastern part of Atotsugawa fault of Investigation for fault activities of the Atotsugawa fault System

Sakogaichi, Kaoru*; Takebe, Akimitsu*

JNC TJ7420 2005-040, 62 Pages, 2000/03

JNC-TJ7420-2005-040.pdf:17.96MB

The Atotsugawa active fault system (AFS) extends 60km or more in the northern Hida Mountains of central Japan, traced ENE to WSW trend. The Hietsu earthquake occurred along the AFS. The studies on the AFS started in April 1996 as

JAEA Reports

Excavation survey by "Geo-slicer" sampler on the Mozumi-Sukenobu fault of investigation for fault activities of the Mozumi-Sukenobu fault

Takemura, Tomoyuki*; Sakogaichi, Kaoru*; Takebe, Akimitsu*; Inoue, Motoi*; Niimi, Ken*; Kinoshita, Hirohisa*

JNC TJ7420 2005-051, 93 Pages, 1999/03

JNC-TJ7420-2005-051.pdf:23.99MB

The Atotsugawa active fault system (AFS) extends 60km or more in the northern Hida Mountains of central Japan, traced ENE to WSW trend. The Hietsu earthquake occurred along the AFS. The studies on the AFS started in April 1996 as

JAEA Reports

Investigation of the Hydraulic Properties in the Active Fault Survey Tunnel

Takemura, Tomoyuki*; Sakogaichi, Kaoru*; Takahashi, Eiichiro*; Takebe, Akimitsu*; Nakajima, Toshihide*; Yamashita, Mitsugu*; Yamanouchi, Hirofumi*

JNC TJ7420 2005-041, 129 Pages, 1999/03

JNC-TJ7420-2005-041.pdf:65.88MB

The active fault survey tunnel that crossed the Mozumi-Sukenobu fault (a member of the Atotsugawa fault system) is located at the Kamioka mine, northern Gifu prefecture, Central Japan. The comprehensive study of the active fault such as the earthquake mechanism is done by using this tunnel. The purpose of this investigation is to define the hydrological characteristics inside and around the Mozumi - Sukenobu fault crush zones. The investigation is mainly Lugeon test and simple permeability test inside and around the crush zones.

JAEA Reports

Geological survey and initial stress measurement test consernig of "The crustal deformation study in the active fault zone"

Takemura, Tomoyuki*; Shingu, Kazuki*; Sakogaichi, Kaoru*; Nishikawa, Yuji*; Okada, Yoichi*; Nakajima, Toshihide*; Yamashita, Mitsugu*

JNC TJ7420 2005-035, 152 Pages, 1998/03

JNC-TJ7420-2005-035.pdf:27.16MB

The active fault survey tunnel that crossed the Mozumi-Sukenobu fault (MSF) is located at the Kamioka mine, northern Gifu prefecture, Central Japan. The comprehensive study of the active fault, such as the study of the earthquake mechanism and the development of the new initial stress measurement method is done by using this tunnel. One of the purposes of this investigation is to define the three-dimensional distribution of the MSF by geological survey, on the basis of the seismic and geophysical studies on this fault. The other purpose is to develop the new initial stress measurement method.

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