摘要
通过正演模拟方式分析音频大地电磁法(AMT)、中心回线瞬变电磁法(TEM)、直流电测深法(VES)对地层的响应特征,结果表明:TEM、AMT对地层的响应特征类似,即对低阻层反应灵敏,而对高阻层的分辩能力较差;VES对高阻层及低阻层的分辩能力相当,相对于TEM、AMT,VES对低阻层的分辩能力差,而对高阻层的分辨能力较高.基于AMT或TEM与VES对地层的响应具有互补的特点,探讨了对AMT或TEM与VES数据进行的联合反演.结果表明,AMT或TEM与VES进行联合反演,相比单一方法进行反演,结果能得到明显的改善.
The paper discusses the layer response characters of AMT, TEM （central loop configuration） and VES （schlumberger configuration） by forward modeling procedure. The result shows that AMT or TEM is more sensitive to low resistivity layers than high resistivity layers, and VES is more sensitive to high resistivity layers comparing with AMT and TEM. Based on the response characters the paper then discusses the joint inversion of AMT or TEM and VES. The model inversion trial shows that the joint inversion results are much better than the result of any single method inversion.
出处
《地球物理学进展》
CSCD
北大核心
2008年第5期1550-1555,共6页
Progress in Geophysics
