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《Chinese Journal of Geophysics》 1994-S2
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THE SQUARE WAVE COHERENT METHOD TO EXTRACT IP EFFECT DIRECTLY AND SIMULTANEOUSLY

HE JI-SHAN;WANG SHAO-WU;TANG JING-TIAN(Institute of Geophysics, Central South University of Technology, Changsha 410083)  
Based on the special appearance of EM effect and IP effect in measured dual-frequency wave form,the square wave coherent method to extract the IP effect directly and simultaneously is proposed in this paper. The results of numerical calculation and experiments show that the IP effect extracted includes little EM effect. Therefore, the EM effect can be directly eliminated in field measuring. The instrument made on this method works well in the waterbath experiments.
【Fund】: 国家自然科学基金
【CateGory Index】: P631.3
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1 Li Song Wang Xingtai(Geophysical prospecting of Liaoning (Changchun College of Geology)geology prospecting corporation);THE APPLICATION OF SIMILAR COMPARIRION BETWEEN ELECTRIC METHOD AND MAGNETIC METHOD TO IP ANOMALY INTERPRETATION IN AN ORE DISTRICT OF LIAONING PROVINCE[J];;1987-02
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7 Wang Qingyi (Beijing Institute of Resource and Geology, CNNC);SPHERULITB CONTENT RESTRICTION IN THE EFFECTIVE RESISTIVITY EXPRESSION[J];;1986-03
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