March 4, 2010 Journal article Open Access

M. Gambetta

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    "description": "This paper proposes a digital enhancement tool for magnetic anomaly maps. The magnetic anomaly map is decomposed<br>by means of Eigenvalue Decomposition into a number of orthogonal bases. The dataset is then filtered<br>accordingly to a specific variance pattern. The dataset is decomposed and the eigenvalues population is inspected<br>so that the variance is evaluated yielding the definition of two thresholds. Subsequently, the dataset is<br>reconstructed into three subsets which hold different features respectively. The proposed filtering procedure is<br>first tested with a synthetic signal and then applied to the data of Cape Roberts (Antarctica) aeromagnetic survey,<br>flown over an off-shore rift basin. The proposed method appears to be efficient in noise removal and acts as<br>a digital enhancement tool which provides TMI anomaly maps revealing hidden lineaments, otherwise not visible.<br>The methodology effectiveness as a hidden lineaments detection tool has been checked against independent<br>data.", 
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    "keywords": [
      "Rural Digital Europe", 
      "NEANIAS Atmospheric Research Community", 
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    "language": "und", 
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    "publication_date": "2010-03-04", 
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    "title": "Modal decomposition of magnetic maps: the case of Cape Roberts aeromagnetic survey, Antarctica"
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