新沂地震台地电阻率反向年变分析
Acta Seismologica Sinica（2013）
Abstract
结合新沂地震台电测深曲线、测区地质剖面资料,建立了三维非均匀层状介质有限元模型.以第一层介质电阻率变化模拟表层介质电阻率随季节性降雨的变化,在模型中计算了3个测道的地电阻率年变化形态,计算结果表明,EW和N45°E测道地电阻率随表层介质电阻率的增减同向增减,而NS测道地电阻率则与表层介质电阻率变化相反.该结果符合新沂台3个测道实际观测的年变形态.
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Key words
annual variation,georesistivity,Xinyi seismic station,finite element model
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