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利用现有地电阻率观测资料,探索提出了新的无量纲地电前兆因子————地电阻率各向异性度(S),研究了孕震过程中地电阻率各向异性度的动态演化图象特征.结果表明,孕震过程中,地电阻率各向异性度显示出由正常异常强化(幅度、范围) 异常弱化 发震 正常的过程.地震发生于S强化后期转为弱化的时段及S异常区的边缘梯度带上.地电阻率各向异性度的动态演化图象,反映了孕震过程中构造应力场的变化.因而,可以通过地电阻率各向异性度的动态演化图象跟踪地震孕育发生过程,服务于地震短临预报. 相似文献
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Features and physical process of the dynamic evolution pattern of ground resistivity precursor front
IntroductionSincethe1960′s,thedevelopmentofmodernscienceandtechnologyhasgradualymadeitposibletopredictearthquakesandhaspromot... 相似文献
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IntroductionTothefinalanalysis,earthquakepredictionisstillamarginalscienceofextremedifficultyintheworld.Tomakesomebreakthroughorpromoteearthquakeprediction,itisnecessarytostrengthentheresearchonnewtrainofthinking,newtheoryandnewmethods.Theresearchontheanisotropyofcrustalmediaduringtheseismogenicprocesshasbeentakenmoreandmoreseriouslybyseismologists.Inthepast,manyscholarsoftenmadestudiesonthefeaturesofmediainresponsetoseismicwavesandachievedsomeprogress(Teng,etal,1992).Thispaperstudiestheelect… 相似文献
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