瞬变电磁场信号在地下的扩散及地面上的时域响应特性

基金项目:

国家自然科学基金资助项目(49974026)

详细信息

Time-domain behavior of transient electromagnetic field signalunder ground and on the surface of the earth

摘要: 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。
- 瞬变电磁场 /
- 时域有限差分 /
- 扩散 /
- 滞后
Abstract: Transient electromagnetic sounding is a prospecting method for accurate exploration developing rapidly recent years.In this paper,the delaying and absorbing phenomena of transient field are analyzed,by means of time-domain finite difference approach which provides a forward modeling base for further time-frequencey analyzing and higher dimensional inversion.
- transient electromagnetic field /
- time-domain finite difference /
- diffusion /
- hysteresis