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Potential Field Continuation between Irregular Surfaces - Problems and ApplicationsNormal access

Authors: B. Meurers and A. Ahl
Event name: 68th EAGE Conference and Exhibition incorporating SPE EUROPEC 2006
Session: Gravity, Magnetics, Mining and Geothermal
Publication date: 12 June 2006
DOI: 10.3997/2214-4609.201402098
Organisations: SPE, EAGE
Language: English
Info: Extended abstract, PDF ( 7.31Mb )
Price: € 20

Summary:
The field continuation procedure by Ivan (1994) providing potential field continuation between arbitrary surfaces has been implemented for use of unevenly scattered rather than gridded data. Errors induced by under-sampling are investigated by synthetic case studies. The basic assumption of dipole magnitudes linearly varying on the triangle facets of the polyhedral topography approximation turns out to limit the accuracy of Ivan’s algorithm. The method is applied to combine aeromagnetic data acquired by different partly overlapping surveys in order to remove unknown biases and to refer all data to a common surface with constant topography clearance.


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