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Interpreting magnetic data by integral moments
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
2008 (English)In: Geophysical Journal International, ISSN 0956-540X, E-ISSN 1365-246X, Vol. 174, no 3, 815-824 p.Article in journal (Refereed) Published
Abstract [en]

The use of the integral moments for interpreting magnetic data is based on a very elegant property of potential fields, but in the past it has not been completely exploited due to problems concerning real data. We describe a new 3-D development of previous 2-D results aimed at determining the magnetization direction, extending the calculation to second-order moments to recover the centre of mass of the magnetization distribution. The method is enhanced to reduce the effects of the regional field that often alters the first-order solutions. Moreover, we introduce an iterative correction to properly assess the errors coming from finite-size surveys or interaction with neighbouring anomalies, which are the most important causes of the failing of the method for real data. We test the method on some synthetic examples, and finally, we show the results obtained by analysing the aeromagnetic anomaly of the Monte Vulture volcano in Southern Italy.

Place, publisher, year, edition, pages
2008. Vol. 174, no 3, 815-824 p.
Keyword [en]
inverse theory, magnetic anomalies, modelling and interpretation, rock and mineral magnetism
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-109097DOI: 10.1111/j.1365-246X.2008.03872.xISI: 000258684400004OAI: oai:DiVA.org:uu-109097DiVA: diva2:248896
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2017-12-13Bibliographically approved

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