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《Earthquake Research In China》 1988-01
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Wu Qianfan Xie Yizhen Zu Jinhua Wang Du (Institute of Geology, SSB)  
This paper describes the characteristics of the geothermal field in North China: high value at the Jizhong-Xialiaohe depression and Linqing depression as well as their east neighboring region, and also high value at the Fenwei fault depression zone, and the highest value at thhe middle Bohai depression and the Tanlu fault zone, low value at the Yanshan - Taihangshan uplifting region, also lower value at the Zhoukou depression and Luxi uplifting region, an in-between value at the fore area of Yanshan mountain. The value of geothermal heat flow in with Chian averaged over the divided eight regions is 1. 55HFU.The thermal structure of crust and upper mantle at the four regions in North China has been suggested . The temperature and heat flow values at the bottom part of sedimentary, granitoids and basalt layers have been estimated respectively for the four regions. The lithosphere thickness and bottom temperature of this region have been derived by making use of the averaged heat flow of the four regions。An analysis has been made on the relations between the geothermal field and the geology and other geophysical field. The emphasized discussion is on the internal relations between the earth' s inside heat and the prepartory process and occurrence of an earthquake。
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