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Authors: Caratori Tontini, F.*
Cocchi, L.*
Carmisciano, C.*
Title: Rapid 3D forward model of potential fields with application to the Palinuro Seamount magnetic anomaly (Southern Tyrrhenian Sea, Italy)
Title of journal: Journal of Geophysical Researches
Publisher: AGU
Issue Date: 2008
DOI: 10.1029/2008JB005907
Keywords: magnetic anomalies
gravity anomalies
Abstract: We show a set of forward model equations in the Fourier domain for calculating the 3D gravity and magnetic anomalies of a given 3D distribution of density or magnetization. One property of the potential-field equations is that they are given by convolution products, providing a very simple analytic expression in the Fourier domain. Under this assumption, the domain of the density or magnetization parameters is connected by a biunivoc relationship with the data space, and potential-field anomalies can be seen as filtered versions of the corresponding density or magnetization distributions. A very fine spatial discretization can be obtained by using a large number of points within a unique 3D grid, where both the source distributions and field data are defined. The main advantage of this formulation is that it dramatically reduces execution times, providing a very fast forward model tool useful for modeling anomalies at different altitudes. We use this method to evaluate an average magnetization of 8 A/m for the Palinuro Seamount in the Tyrrhenian Sea (Southern Italy), thus performing a joint interpretation of morphological and newly acquired magnetic data.
Appears in Collections:04.05.04. Magnetic anomalies
04.02.02. Gravity methods
04.03.04. Gravity anomalies
04.02.04. Magnetic and electrical methods
05.01.05. Algorithms and implementation
Papers Published / Papers in press

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