Heat signature on the Chelungpu fault associated with the 1999 Chi‐Chi, Taiwan earthquake

Yasuyuki Kano, Jim Mori, Ryo Fujio, Hisao Ito, Takashi Yanagidani, Setsuro Nakao, Kuo‐Fong Ma

doi:10.1029/2006gl026733

Heat signature on the Chelungpu fault associated with the 1999 Chi‐Chi, Taiwan earthquake

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Yasuyuki Kano

Disaster Prevention Research Institute Kyoto University Kyoto Japan
Jim Mori

Disaster Prevention Research Institute Kyoto University Kyoto Japan
Ryo Fujio

Disaster Prevention Research Institute Kyoto University Kyoto Japan
Hisao Ito

Japan Agency for Marine‐Earth Science and Technology Yokohama Japan
Takashi Yanagidani

Disaster Prevention Research Institute Kyoto University Kyoto Japan
Setsuro Nakao

Disaster Prevention Research Institute Kyoto University Kyoto Japan
Kuo‐Fong Ma

Department of Earth Science and Institute of Geophysics National Central University Jhongli Taiwan

書誌事項

公開日: 2006-07

権利情報

http://onlinelibrary.wiley.com/termsAndConditions#vor

DOI

10.1029/2006gl026733

公開者: American Geophysical Union (AGU)

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説明

<jats:p>We have made observations of a heat signature that is associated with the frictional heat generated at the time of faulting for a large earthquake. Temperature measurements in a borehole that intersects the Chelungpu fault at a depth of about 1100 m, show a small increase near the fault even six years after the earthquake. The temperature signature has a symmetric shape with a width of about 40 m and is centered on the fault that slipped about 5 m during the 1999 Chi‐Chi, Taiwan earthquake. The small amplitude of 0.06°C for the observed temperature anomaly indicates a very low level of friction that generated heat at the time of the earthquake.</jats:p>