摘要
为克服因关断时间校正而带来的误差,尝试直接对包含关断时间效应的瞬变电磁资料进行反演。正演采用将斜阶跃波离散为多个阶跃波之和的方法,反演采用经典的马奎特法。对模型试算的结果表明,采用该方法直接对斜阶跃响应进行反演,结果比较理想,计算速度也可以接受。
This paper tries to conduct a direct inversion of the transient electromagnetic data, in which the ramp time effect is considered so that error correction of ramp time effect can be avoided. Ramp current is replaced by a series of transient currents during the forward procedure. Considering the main purpose of this paper, the authors have chosen a typical inversion method Marquardt. The results obtained are coincident well with the theoretical model, and the cost of time is acceptable.
出处
《物探与化探》
CAS
CSCD
2005年第3期234-236,共3页
Geophysical and Geochemical Exploration
关键词
瞬变电磁法
关断时间
一维反演
transient electromagnetic method
ramp time
1D inversion
