ON MAGNETOTELLURIC AVERAGE VELOCITY
Wang Jiaying, Fang Sheng, Zuo Haiyan
In order to suit the needs of further development of the magnetotel-luric interpretation simulating seismic method, an approximate calculation of the average velocity of magnetotelluric field in 1-D magnetotel-luric model is suggested. In the first place, to transform the magnetotelluric response function C(ω) into partial fraction and then develop to a continued fraction and compare it with the analytic expression of C(ω) approximate continued fraction thus it enables us to determine the average velocity. Listed in the paper is the computing result from miscellaneous theoretical models and the measured data. Moreover, a depth section for the real data is plotted with the approach just brought up with which compare the result of seismic reflection. It proves that the mothod mentioned above could yield better result as compared with the magnetotelluric and electric sounding method.