【摘要】 由近地表电性不均匀体引起的静态偏移严重地影响了MT资料解释的质量。研究表明 ,利用时间域电磁测深 (TEM )可以有效地解决这个问题。重点讨论了利用TEM做MT静改时需要解决的 3个技术问题 ,并以实例说明了应用效果更多还原

【Abstract】 The static shift caused by shallow inhomogeneouties is one of the major factors which lead to severe problems in the interpretation of magnetotelluric (MT) data. It has been shown that this problem can be solved by using time domain Transient ElectroMagnetic (TEM) sounding. In this paper, the characteristic of MT static shift and the principle of correction by using TEM method are presented. Besides, three technical key points, the features of TEM survey system (TEMS-3S), the data processing software and the correcting techniques, are discussed, and a case history is given as well to illustrate the effectiveness of the correction method for MT static shift.更多还原