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Development in the research of HSSMT instrument

CHENG De-fu WANG Jun LI Xiu-ping DUAN Qing-ming LIN Jun (Key Laboratory for Geophysical Instrumentation of Ministry of Education,Jilin University,Changchun 130026,China)  
Integrating the characteristics of MT and CSAMT with combination source of nature and artificial electro-magnetic field,Hybrid-Source Magneto tellurics(HSMT)detecting method is able to detect the resistivity of thecrust media from several meters to 1000m in depth by the signals of frequency bandwidth 0.001Hz~100kHz.Themethod can be applied in surveying groundwater,environment,mineral resource,engineer and so on.Development ofthis method and the research work on the instruments such as electromagnetic wave transmitter and receiver,wideband magnetic sensor etc.are discussed in this paper.Some problems about the method are also introduced.Field ex-perimental results have proved the feasibility of the technological scheme adopted in the prototype instrument.
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