Terrestrial heat flow at Hirabayashi on Awaji Island, south-west Japan |
| |
| Authors: | Taku Kitajima Yoji Kobayashi Ryuji Ikeda Yoshihisa Iio Kentaro Omura |
| |
| Institution: | Institute of Geoscience, University of Tsukuba, 1-1-1 Tennodai, Tsukuba 305-8571, Japan and;Solid Earth Science Division, National Research Institute for Earth Science and Disaster Prevention, 3-1 Tennodai, Tsukuba 305-8571, Japan (email:;) |
| |
| Abstract: | Abstract Terrestrial heat flow at Hirabayashi in Awaji Island, south-west Japan, was investigated using the deep borehole penetrating through the Nojima Fault, which was activated during the 1995 Hyogo-ken Nanbu earthquake, by measuring the thermal conductivity of basement rocks. Using the temperature logging data, the value of terrestrial heat flow in Hirabayashi was found to be 56.6 ± 5.2 mW/m2. The relationship between cut-off depth of aftershocks of the Hyogo-ken Nanbu earthquake in Hirabayashi and terrestrial heat flow are discussed. The cut-off depth roughly corresponds to isotherms of 300°C. |
| |
| Keywords: | 1995 Hyogo-ken Nanbu earthquake brittle–ductile transition cut-off depth of aftershocks geotherm radioactive heat production terrestrial heat flow thermal conductivity |
|
|
