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Magnetotelluric Sounding To Be Seismic Time Section Explains The Method

Posted on:2006-12-17Degree:MasterType:Thesis
Country:ChinaCandidate:X H YangFull Text:PDF
GTID:2190360182968785Subject:Earth Exploration and Information Technology
Abstract/Summary:PDF Full Text Request
The pseudo - seismic interpretation is the method of to draw up the earthquake to explain the method deeply according to the similar to flexible wave express the formality and the physics meanings in mathematics top certainly all have principle of electromagnetic wave, valid method go in the earthquake method to use to carry the electromagnetism method of a kind of electromagnetism explain the method. The pseudo - seismic interpretation , can divide the line to reflect the interface availably under the condition of 1D , compared with the normal regulations that it have its own characteristics , but the pseudo - seismic interpretation like other Earths physics methods all exist fault. Therefore, how contract and judge the fault and raise the accuracy and credibility of the solution, becoming a urgent task.First, the article explain the general development of the Magnetotell-uric and its data processing ,and explain the method of the explores and the techniques of the earthquake explore , and discuss the basic principles of the pseudo - seismic interpretation;Deduced the formula under the 1D section model write out the calculation procedure of the pseudo - seismic , We computed the two-layer, three-layer and four-layer of 1D of the differ- rent model parameter.It is obvious that the pseudo - seismic interpretation can divide the line of the reflection and electricity layers,under the condition of lD,The inversion of the influence regulation of result from drawing up the earthquake method to commence in" tiny layer", inquiry into" tiny layer" to, with two layers of 1D, three" tiny layer" of different from four layers for model, pass to take thickness of layers, the inversion to compute the glint coefficient, tally up" tiny layer" of different thickness, to anti- play basic regulation of the result influence is: 1) the same model,with different thickness" tiny layer" parameter,which is anti- to play the not exhausted ho-mology of result;2) the " tiny layer" thickness was divided more thin, the inversion result wad more precious;3) " tiny layer" thickness is more thin, the inversion to compute time more long, the cost increase high;4) the first floor electricity layer divides the line to two" tiny layer" at least,then can guarantee thus the inversion accuracy of result.The article argument that under the condition of lD,the earth elect-romagnetism measure and draw up the earthquake time section to explain the method and can divide the line to reflect the interface and electricity layers availably . At the same time , the " tiny layer" thickness to inversion the influence regulation study of compute the result, argument" tiny layer" thickness is one of the key techniques that the influence draws up not unique that the earthquake explains the solution, reasonably choice the " tiny layer" thickness and parameter is an accuracy and credibility, carry out the inversion of more prcious physics model.
Keywords/Search Tags:Magnetotelluric, The pseudo - seismic interpretation, reflectance, time-section, tiny layer
PDF Full Text Request
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