Research Of The Feasibility Of High-density Resistivity Method Inversion Used In Magnetotelluric (MT) Sounding Data Process

high-density resistivity method is a part of direct-current Geophysical methods which is widely used in shallow geophysical In recent years, It is a Computer inversion and computational procedure which is based on the smooth restraint least squares method ,Because it used the accurate Newton optimization misalignment to be youngest two rides the new algorithm , s o under the great data quantity the computation speed is ten times faster than conventional least squares method ,and takes fewer memory.Magnetotelluric sounding is widely used In the search for oil and gas structures, division of sedimentary facies sedimentary basin and basement structure that its data inversion need to be calculated Jacobian partial derivative matrix,Inversion of two-dimensional model for calculating the volume is very large, and difficult to control error.The research of high-density resistivity method Inversion used in Magnetotelluric( MT )sounding data process,mainly to solve the three problems:First, carries on the interpolation the non-array data to transform as the array data,researching the feasibility;Second, will have the directive parameter electronic resistivity data with to process the non-directive data the method to come the inversion ,studies the realizability of its method;Third, determines two methods in relations of the detection depth transformed.finally, comparing the two inversion model,differentiates it to the geologic structure response fit and unfit quality,focus on the shape of layered strata and depth, as well as the location of fault.This article through survey line carries on ZB the sub-area five MT the high density resistivity method inversion attempt ,and compared with the conventional two-dimensional magnetotelluric inversion results,found that this application is not only feasible,but also greatly reduce the computation and erro can easily control.It has a better effect in the determination high-resistance basis's depth,and is clearer to the geologic structure level layered characteristic reflection,it has the reference effect in the determination goal body crosswise electronic resistivity's difference and the fault position,May as the Magnetotelluric data processing explanation beneficial supplement.