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《CHINESE JOURNAL OF LOW TEMPERATURE PHYSICS》 1996-01
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COMPARISON BETWEEN HIGH T_C SQUID SENSOR AND CONVENTIONAL INDUCTIVE SENSOR IN TRANSIENT MAGNETOELECTRIC METHOD FOR MAGNETOTELLURIC SOUNDING

Dai Yuandong; Wang Shiguang(Department of Physics,Peking University and National laboratory for Mesoscopic Physics ,Beijing 100871)(Received 20 March. 1995)  
AbstractWe have investigsted the application of high Tc. SQUID in transient magnetoelectric (TEM) method for magnetotelluric (MT.) sounding. An analytical expression for the secondary field B(t) detected using SQUID sensor in a case of homogeneous half space is derived.A theoretical comparison between the SQUID sensor and conventional inductive sensor hasbeen made.It demonstrates that the high Tc SQUID of the present resolution is of a remarkable superiority in long offset TEM (LOTEM) method,as well as in TEM with a magneticbipolar source for large volume metal deposits in deep underground.
【CateGory Index】: O511
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