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タイトル: Studies of the Thermal State of the Earth. The 12th Paper : Terrestrial Heat Flow Measurements in Hokkaido District, Japan
その他のタイトル: 地球熱学 第12報 : 北海道地方に於ける地殻熱流量測定結果
著者: Horai, Ki-iti
著者(別言語): 宝来, 帰一
発行日: 1963年6月30日
出版者: 東京大学地震研究所
掲載誌情報: 東京大学地震研究所彙報. 第41冊第1号, 1963.6.30, pp. 167-187
抄録: Terrestrial heat flow was measured at 6 localities in Hokkaido District. Of these 6 localities, 3 (Akabira, Ashibetsu, Haboro) are coal mines and the other 3 (Shimokawa, Konomai, Toyoha) are metal mines. Geothermal gradient was assessed from underground temperature distribution measured in each of these localities. The gradients are 2.48℃/100 m at Akabira, 3.08℃/100 m at Ashibetsu, 4.54℃/100 m at Haboro, 2.84-3.24℃/100 m at Shimokawa and 3.81- 4.10℃/100 m at Konomai. In Toyoha, the gradient amounts to 11 ℃/100 m. Geothermal heat flux was calculated combining the thermal gradient with thermal conductivity of rocks in each locality. The values of flux are 1.07 × 1O-6 cal/cm2 sec in Akabira, 1.35 × 1O-6 cal/cm2 sec in Ashibetsu, 1.87 × 10-6 cal/cm2 sec in Haboro, 1.60-1.82 × 10-6 cal/cm2 sec in Shimokawa, 2.44-2.63 × 1O-6 cal/cm2 sec in Konomai, and in Toyoha the flux seems to exceed 5 × 10-6 cal/cm2 sec. The results seem to indicate that the heat flow exceeds 2 × 10-6 cal/cm2 sec in the western and northeastern parts of the District, while other areas show moderate heat flow i.e. on the 1 × 10-6 cal/cm2 sec level.
URI: http://hdl.handle.net/2261/12102
ISSN: 00408972


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