单斜地形情况下的磁共振测深方法反演研究

李凡, 周明, 李开天, 鲁恺, 李振宇

Inversion of magnetic resonance sounding under the condition of surface slope

LI Fan, ZHOU Ming, LI Kai-Tian, LU Kai, LI Zhen-Yu

图3 不同地形倾角情况下MRS方法的核函数断面 a—α=0°;b—α=30°;c—α=45°;d—α=90°;各子图已按照真实地形角度摆放,红色坐标轴为水平坐标系。计算用参数为:激发—接收线圈为半径10 m的圆形,2匝。地下电阻率100 Ω·m,激发脉冲矩为10 A·s,地磁倾角45°N,倾向正南,磁偏角0°

Fig.3 Cross section of the MRS kernel function under different terrain inclination a—α=0°;b—α=30°;c—α=45°;d—α=90°;each subplot has been placed according to the real dip angle, and the red coordinate axis is the horizontal coordinate system. The parameters used in calculation are:Tx/Rx is a circle with the radius of 10 m, 2 turns. The underground resistivity is 100 Ω·m, the excitation pulse moment is 10 A·s, the geomagnetic inclination is 45°N, the dip direction is south, and the geomagnetic declination is 0°