Modeling the Structure of the Kraka Massifs Based on a Complex of Gravitational and Magnetic Fields
P.S. Martyshko, D.D. Byzov, N.V. Fedorova
Institute of Geophysics, Ural Branch of the Russian Academy of Sciences
Keywords: Gravitational and magnetic anomalies, inverse problems, Kraka massif
Abstract
The paper describes methods for three-dimensional interpretation of gravity and magnetic anomalies taking into account the relief of the earth's surface. Parallel algorithms for solving direct problems of gravimetry and magnetometry (calculating field values from sources) are implemented in software for personal computers with graphic accelerators. Based on these algorithms, methods for solving inverse problems on correctness sets have been developed. When modeling, anomaly sources of arbitrary shape are approximated by a dense regular grid, the elements of which are parallelepipeds. Methods for identifying anomalies and localizing sources in the earth's crust, calculating their physical parameters have been applied in modeling the structure of the Kraka ultramafic massifs in the Southern Urals with an area of 50x80 km2. The height of the mountain ranges in this
area reaches 1043 m, and the difference in relief heights is more than 500 m.
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