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瞬变电磁测深是近年来发展较快的电磁勘探方法 ,是实现精确勘探的一个突破点。本文应用时域有限差分算法分析了瞬变场在二维地电模型情况下低阻体对“烟圈”的吸收现象、瞬变场的滞后现象 ,对进一步的时频分析和高维反演提供了正演基础。
Transient electromagnetic sounding is a rapidly developing electromagnetic exploration method in recent years, which is a breakthrough point to achieve accurate exploration. In this paper, the finite-difference time-domain (FDTD) algorithm is used to analyze the absorption phenomenon of “smoke ring” and the hysteresis of transient field of low-resistivity body in transient field under the condition of two-dimensional geoelectric model. Provided a positive foundation.