March 4, 2010 Journal article Open Access

M. Gambetta

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{
  "DOI": "10.4401/ag-4641", 
  "abstract": "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.", 
  "author": [
    {
      "family": "M. Gambetta"
    }
  ], 
  "id": "130211", 
  "issued": {
    "date-parts": [
      [
        2010, 
        3, 
        4
      ]
    ]
  }, 
  "language": "und", 
  "note": "", 
  "title": "Modal decomposition of magnetic maps: the case of Cape Roberts aeromagnetic survey, Antarctica", 
  "type": "article-journal"
}