高温超导磁强计在瞬变电磁法中的应用研究  

The applications of HTc SQUID magnetometer to TEM

作　　者：陈晓东[1] 赵毅[2] 张杰[2] 吕国印[2] 马平[1] 戴远东[1] 

机构地区：[1]北京大学物理学院,北京100871 [2]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000

出　　处：《地球物理学报》2012年第2期702-708,共7页Chinese Journal of Geophysics

基　　金：国家高技术研究发展计划项目(2007AA03Z213);地质大调查项目(1212010560302)资助

摘　　要：通过对高温超导磁强计的不断完善,研制出了适合在瞬变电磁法中使用的高温超导磁强计,实现了在瞬变电磁法中直接测量磁场的目的.同时开展了瞬变电磁法感应磁场的数据处理与解释技术研究,开发了瞬变电磁法感应磁场的电性成像软件,可以对使用高温超导磁强计作传感器测得的瞬变电磁感应磁场数据进行处理与电性成像.野外实验表明:高温超导磁强计工作稳定,在瞬变电磁法中使用高温超导磁强计比使用感应线圈做传感器提高了勘探深度.HTc SQUID magnetometer is characterized by low noise, high sensitivity, wide dynamic and frequency ranges and can be used as a B field sensor. Theoretically, the HTc RF SQUID magnetometer has superiority over conventional inductive coil in TEM application. Since 1989, Bejing University and IGGE have been developing HTc SQUID magnetometers for geophysical exploration. We have manufactured the HTc SQUID magnetometer adapted to several commercial TEM system, and realized measuring magnetic field directly in TEM. IGGE also have studied the data processing and interpretation technology and have developed resistivity imaging software for the data acquired with HTc SQUID magnetometer. The results of the field tests show that larger detection depth could be expected in TEM survey by using HTS RF SQUID magnetometer.

关 键 词：高温超导磁强计 瞬变电磁法 电性成像 

分 类 号：P631[天文地球—地质矿产勘探]