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A tool for analysing depth resolution in potential-field inversion
- Publication Year :
- 2013
- Publisher :
- European Association of Geoscientists & Engineers (EAGE), 2013.
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Abstract
- A careful management of the ambiguities and errors in potential field inversion is crucial for obtaining reliable information about the source distribution with respect to depth. In this paper we introduce a tool, the ApproxDRP, which is based on an approximation of the singular vectors obtained by the iterative Lanczos bidiagonalization algorithm. This tool allows a computational/visual analysis of how much the depth resolution in a potential-field inversion problem is influenced by the way the problem is discretized and regularized. Since the ApproxDRP is based on an iterative method, it is suitable for large-scale problems. We show that when used in combination with a plot of the approximate SVD quantities, the ApproxDRP may successfully show the limitations of depth resolution resulting from noise in the data. This allows a reliable analysis of the retrievable depth information and effectively guides the user in choosing the optimal number of iterations, for a given problem.
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.od......3730..4bd5d1bf711edb7fd5c40d5b133de7b0