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甘肃地区有三个高导异常带:嘉峪关与河西堡之间的近北东向DV型高导异常带,景泰地区的HC型异常带以及定西和天水之间的近东西向DV型高导异常带。根据E.C.Bullard的观点我们指出三者的埋藏深度大约从地壳一直延伸到上地幔。同时也根据地下水和温泉分布等资料分析了产生高导异常带的可能原因,并论述了这些高导异常带在地震预报中的重要地位。
There are three high-conductivity anomalous zones in Gansu: the near-NE-trending DV-type anomalous zone between Jiayuguan and Hexiu Fort, the HC-type anomalous zone in Jingtai region and the near-to-east-to-west type DV-type anomalous anomalous zone between Dingxi and Tianshui . According to E. C. Bullard, we point out that the burial depths of all three extend from the crust to the upper mantle. At the same time, the possible reasons for producing high-conductivity anomaly zones are analyzed according to the distribution of groundwater and hot springs. The importance of these high-conductivity anomaly zones in earthquake prediction is also discussed.