著者

高野 忠 前田 崇 相馬 央令子 今岡 啓治 吉田 真吾 服部 克己 Takano Tadashi Maeda Takashi Soma Eriko Imaoka Keiji Yoshida Shingo Hattori Katsumi

出版者

宇宙航空研究開発機構宇宙科学研究本部

雑誌

宇宙利用シンポジウム 第23回 平成18年度 = Space Utilization Research: Proceedings of the Twenty-third Space Utilization Symposium

巻号頁・発行日

pp.163-166, 2007-03

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Microwave emission was found when materials were destroyed by a static pressure. This paper describes the experimental setup to observe the phenomena, the obtained terms and results and the method to convert to power. According to the obtained experimental results, the cause of microwave emission is inferred to be the dissociation of atoms or molecules, but is not yet completely confirmed. Currently, the phenomenon is expected to be applied to geophysical explorations in the earthquake detection.

著者

Kato Aitaro Sakaguchi Arito Yoshida Shingo Mochizuki Hiromine Kaneda Yoshiyuki

出版者

東京大学地震研究所

雑誌

地震研究所彙報 (ISSN:00408972)

巻号頁・発行日

vol.78, no.1, pp.83-90, 2003

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We conducted permeability measurements of basalt sampled from an exhumed ancient fault zone in the Cretaceous Shimanto accretionary complex in Japan, in order to investigate permeability structure and evolution following shear failure. Permeability showed a strong reduction with increase in the effective confining pressure and temperature. Rapid sealing at elevated temperatures was observed during hold experiments following shear failure. The results indicate that the permeability of a subduction megathrust fault would rapidly decrease due to the precipitation of clay-like minerals and other minerals, and indicates the potential for high fluid pressure in fault zones.