dorsal/arxiv
View SchemaLocalization of magnetic sources underground by a data adaptive tomographic scanner
| Authors | Paolo Mauriello, Domenico Patella |
|---|---|
| Categories | |
| ArXiv ID | physics/0511192 |
| URL | https://arxiv.org/abs/physics/0511192 |
| DOI | 10.2528/PIERM08050504 |
| Journal | Progress In Electromagnetics Research M, vol. 3, 27-56, 2008 |
Abstract
A tomography method is proposed to image magnetic anomaly sources buried below a non-flat ground surface, by developing the expression of the total power associated with a measured magnetic field. By discretising the integral relating a static magnetic field to its source terms, the total power can be written as a sum of crosscorrelation products between the magnetic field data set and the theoretical expression of the magnetic field generated by a source element of unitary strength. Then, applying Schwarz's inequality, an occurrence probability function is derived for imaging any distribution of magnetic anomaly sources in the subsurface. The tomographic procedure consists in scanning the half-space below the survey area by the unitary source and in computing the occurrence probability function at the nodes of a regular grid within the half-space. The grid values are finally contoured in order to single out the zones with high probability of occurrence of buried magnetic anomaly sources. Synthetic and field examples are discussed to test the resolution power of the proposed tomography.
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"abstract": "A tomography method is proposed to image magnetic anomaly sources buried\nbelow a non-flat ground surface, by developing the expression of the total\npower associated with a measured magnetic field. By discretising the integral\nrelating a static magnetic field to its source terms, the total power can be\nwritten as a sum of crosscorrelation products between the magnetic field data\nset and the theoretical expression of the magnetic field generated by a source\nelement of unitary strength. Then, applying Schwarz\u0027s inequality, an occurrence\nprobability function is derived for imaging any distribution of magnetic\nanomaly sources in the subsurface. The tomographic procedure consists in\nscanning the half-space below the survey area by the unitary source and in\ncomputing the occurrence probability function at the nodes of a regular grid\nwithin the half-space. The grid values are finally contoured in order to single\nout the zones with high probability of occurrence of buried magnetic anomaly\nsources. Synthetic and field examples are discussed to test the resolution\npower of the proposed tomography.",
"arxiv_id": "physics/0511192",
"authors": [
"Paolo Mauriello",
"Domenico Patella"
],
"categories": [
"physics.geo-ph",
"physics.ins-det"
],
"doi": "10.2528/PIERM08050504",
"journal_ref": "Progress In Electromagnetics Research M, vol. 3, 27-56, 2008",
"title": "Localization of magnetic sources underground by a data adaptive tomographic scanner",
"url": "https://arxiv.org/abs/physics/0511192"
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