大地电磁场

海洋大地电磁场的特征与测量技术

The Characteristic and Prospecting Technology of the Marine Magnetotelluric Field

海底天然大地电磁场的探测

The Natural Magnetotelluric Field Detection on the Seafloor

用边界单元法模拟二维地形对大地电磁场的影响

Modeling 2-D terrain effect on MT by the boundary element method

有限元法在大地电磁场正演计算中的应用及改进

Application and improvement of finite-element method in forward calculation of geo-electromagnetic field

一种改进的二维大地电磁场有限元数值模拟方法

An Improved Two-Dimensional Magnetotelluric Method of Finite Element Numerical Simulation

电导率分块均匀大地电磁场二维有限元数值模拟

Finite Element Modeling of 2D MT with Block Homogeneous Conductivity

大地电磁场的解析延拓&方法与应用

Analytical continuation of magnetotelluric field & methods and Applications

大地电磁场的两种大震短临异常

Two kinds of short-impending term anomaly before large earthquake in magneto - telluric field

传统的测量电路无法解决诸如海底大地电磁场这样微弱地学信号的检测问题。

Traditional measuring circuit can 't be used to detect the faint geosciences signal such as seafloor magnetotelluric signal .

带地形大地电磁场二维有限元数值模拟研究点源2.5维电场的h-自适应有限元数值模拟

Two-dimension Topographic Numeric Simulation Research in Magnetotellurics Using Finite Elements ; An h-Adaptive Finite Element Modeling of the 2.5-Dimensional Point Source Electricfield

大地电磁场是一种微弱的天然场，通过对其检测，可推知地下介质的电性参数。

The magnetotelluric field is a faint natural field , Through detecting this field , wecan get some electrical parameters of underground medium .

由于大地电磁场存在区域噪声，因而，为压制干扰并获得高质量的场源数据，就需进行带远参考方式的数据采集。

The data acquisition of remote reference is used to suppress interference and acquire the high quality data due to the magnetotelluric regional noise .

第二，研究了有限差分方程的改进算法，根据大地电磁场变化的特点，设计了纵向以等比级数变网格的迭代算法。

Secondly , an improved algorithm for finite difference equation is studied . According to the property of electromagnetic migration field , the algorithm is designed by means of grids varying with geometric progression in the longitudinal direction .

在概述大地电磁场场源的基础上，阐明了影响大地电磁测深资料的噪声分为场源噪声、地质噪声和人文噪声，它们分别来自不同的源。

On the basis of a discussion on the source of magnetotelluric field , this paper points out that the noises affecting magnetotelluric sounding data can be divided into field source noise , geological noise and human noise , which are derived from different sources .

第二章瞬变电磁法的理论基础，较详细地分析了均匀半空间、层状大地瞬变电磁场的特征，推导了早期、晚期及全期道视电阻率ρs公式；

The second chapter is about the theoretical foundation of Transient Electromagnetic Methods .