甘宁青地区地温场及其与地震的关系  

THE GEOTEMPERATURE FIELD IN GANSU\|NINGXIA\|QINGHAI AREA AND ITS RELATION TO EARTHQUAKES

作　　者：雷芳[1] 董治平[1] 刘宝勤[1] 马兰花 赵仪全[1] 

机构地区：[1]中国地震局兰州地震研究所,兰州730000

出　　处：《甘肃科学学报》1999年第3期22-27,共6页Journal of Gansu Sciences

基　　金：甘肃省自然科学基金

摘　　要：利用地温梯度资料，编制了甘宁青地区地温梯度分布图，估算了居里温度面。本区地温梯度平均变化范围２０～３５℃／ｋｍ ，居里温度面的深度约为１６～２８ ｋｍ 。讨论了居里温度面与地震的关系，得出各地区之间地壳温度场的差异所产生的应力。A compilation of geothermal gradient map was ob tained by using some related data of geothermal gradient and the Curie isotherma l surfaces were calculated.The geothermal gradients in different regions changed from 20℃/km to 35℃/km in the investigated area,and the depths of these isothe rmal surfaces in different regions changed from 16km to 28km below sea level.A d iscussion was made on the relationship between the isothermal surface and the oc currence of earthquakes.It was found that the stress due to the difference of te mperatures between two adjacent regions was very important for earthquake occurr ences.

关 键 词：地温场 地温梯度 甘宁青地区 地震 

分 类 号：P468.021[天文地球—大气科学及气象学] P315