Computer technology for separating lithospheric magnetic anomalies

Abstract

Summary New computer technology has been created using parallel computing in multiprocessor PC. The method is implemented in a multithreaded C program using modern NVidia GPUs using the CUDA library and its cuBLAS extension. The article presents a method for studying the structural features of the anomalous magnetic field of the lithosphere and identifying anomalies from sources in different layers of the earth’s crust. To demonstrate the developed computer technology, a region of Northern Eurasia with a size of 700 km × 450 km was selected and the aeromagnetic database of the Urals region was used. Anomalies from various layers of the earth’s crust were separated and maps of magnetic anomalies from near-surface sources of the basement, as well as from sources at the granite layer and basalt layers, were constructed. These maps make it possible to establish the position of deep faults in the upper crust of the Ural Orogen and under the sedimentary cover on the East European platform and Western Siberia, as well as in deeper layers of the earth’s crust. The results can be used for geodynamic reconstructions.