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A Discussion about the Application of 1D Werner Deconvolution in Magnetic Data Processing

Author: WangYaNi
Tutor: WangWanYin
School: Chang'an University
Course: Earth Exploration and Information Technology
Keywords: Werner deconvolution Magnetic anomaly Upward continuation Edge recognition
CLC: P631.4
Type: Master's thesis
Year: 2009
Downloads: 65
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Abstract


One-dimensional Werner deconvolution fast inversion method is a non-linear inversion into fast linear inversion method , derived on the top position of the edge of the magnetic body . The advantage of this method is simple to use and flexible , the drawback is that only applies to a particular field source model ( ie , down unlimited extension of the deep plate body and thick contact zone ) for complex models can only be provided on the top position of the approximate solution , the actual The application has its limitations . Werner deconvolution method on the basis of previous studies , the model spreadsheet , and the results were analyzed and summarized . In order to eliminate the interference , the usual practice is to filter paper using magnetic anomaly upward continuation of a height to eliminate interference . From the inversion of the plurality of solutions to get a reasonable solution, the usual practice is to compute the mean and variance in the number of inversion results , select doubled variance within the the average inversion results as the edge of the magnetic body inversion results . This approach will not only increase the amount of computation , and can not be well separated laterally superposed magnetic body . Magnetic body can be separated laterally superimposed Firstly, the overall level of the edge of the derivative recognition technology to determine the position of the edge of the magnetic body , at the position taken after different Werner operator inversion calculation , the calculated results using previous method to determine a reasonable solution . This approach technology has bring down unlimited extension of a deep plate and thick plate contact to get good results . Taken into account the regional background interference as well as the impact of complex geometry , try to forget Werner seven operators and a limited model deepening . Finally , this method is used in the northern part of the South China Sea aeromagnetic data , inversion horizontal position on the top edge of the magnetic and depth , and the inversion results were preliminary explanation .

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