The Study Of Modeling Methods And Characteristics For Electrical Structure Of Shanxi Massif In Northern China

Shanxi massif located on central section of North China Plate,to the north of the upheaval of the Yinshan Mountains,to the south of the Weihe rift depression,to the west of the Lv-Liang upwelling area which located on the east edge of the ordos block,to the east of the upwelling region of Taihang Mountain,overall,it situates between the tectonicbelt of Taihang Mountain and Lu-Liang Mountains.lt isvery meaningful to explore its underground deep electrical structure because of rich in mineral resources.This paper is based on the national program of"Deep Exploration Technology and Experimentation" set up the project of "Experimental Study of the Continental Standard Grid of Electromagnetic Parameters(SinoProbe-01)",a 1~0× 1~0 MT array based on Northern China will be laid out,aiming to process the 2-D inversion of"NLCG" with the data of 6 MT profiles in the areas of shanxi massif after data processing.Through the electrical structure of the six profile model research,we have a whole understanding about the fault basin of shanxi massif.The whole internal electrical structure shows good Stratified in layers of "low resistance.high resistance.low resistance" model.There is a electrical boundary in the upper mantle of the areas of shanxi block and its location is around N38°.To the north named block of"Jinbei",to the south named of block of "qinshui",There are kinds of faults in the areas of shanxi including some hidden faults,which show electrical gradient belts or disconnection of the electrical layers in the 2-D inversion profiles.Collecting all kinds of geological information,the author design a one dimensional layer model of "low resistance,high resistance,low resistance" and the two-dimensional model with low resistance abnormity,forward calculation by 3d module of WinGLink software,then we will obtain the same cross section of MT surveying data with the actual standard point construction method.The author adopted mean square error method of mathematical statistics to calculate the depth of rock resistivity"standard values" which belong to MT "standard point" of the theoretical model space.Studying on the modeling methods for build "standard point"electrical structure by using the data which analysis and processing from the field collection,extract rock resistivity of "standard value" data volume.By integrating the magnetotelluric inversion results,Analysis the characteristics of shanxi massif electrical structure to provide some information on building the electrical structures"standard" model in north China.