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近年来,随着对地震孕育背景和上地幔地球物理特性的研究,人们日益注意用地磁短周期异常来研究地壳和上地幔的电性结构。在我国继陈伯舫提出渤海地区西部地磁短周期异常并推测其下存在电导率异常后,徐文耀等人分析了甘肃东部的地磁短周期异常,也提出该区存在一东西向高导带。最近,祁贵仲等人利用渤海地区25个台站的地磁资料,进一
In recent years, with the background of earthquake breeding and the geophysical characteristics of the upper mantle, people pay more and more attention to the study of the electrical structure of the crust and the upper mantle by using the short-period geomagnetic anomalies. After China proposed the short-period geomagnetic anomalies in the west of Bohai area and speculated that there is anomalies of conductivity in the western Bohai Sea, Xu Wenyao and others analyzed the short-period geomagnetic anomalies in eastern Gansu and proposed that there is an east-west high conduction band in this area. Recently, Qi Guizhong and others made use of the geomagnetic data of 25 stations in the Bohai Sea into one