COMPREHENSIVE METHOD OF VERIFYING THE ACCURACY OF GEOMAGNETIC FIELD MODELS BY THE EXAMPLE OF THE WEST SIBERIAN PLATE
V.N. Sergeev1, A.A. Soloviev1,2, D.V. Kudin1, R.V. Sidorov1, I.M. Aleshin1,2, F.V. Perederin1,2, K.I. Kholodkov1,2, D.K. Mokrov2, A.A. Kamaev1, A.A. Grudnev1,2, V.V. Kabrov1, V.A. Atabekyan3
1 Geophysical Center of the Russian Academy of Sciences, Moscow, Russia
2Schmidt Institute of Physics of the Earth of the Russian Academy of Sciences, Moscow, Russia
3 Institute of Geology and Mining of Fossil Fuels (IGiRGI JSC), Moscow, Russia
Keywords: Geomagnetic measurements, Earth's magnetic field, measurement methods, aeromagnetic survey, ground-based magnetic survey, magnetic field components, magnetic anomalies, Earth's magnetic field models verification
Abstract
A complex of field geomagnetic studies is proposed, aimed at assessing the accuracy of the Earth's magnetic field models using instrumental determinations of the geomagnetic vector elements in the given location. The set of measurements consists of aeromagnetic survey using unmanned aerial vehicles, as well as ground-based measurements, including pedestrian magnetic survey and the absolute measurements of magnetic declination and inclination. The developed measurement technique allows solving the problem of determining the Earth's magnetic field in areas with insufficient coverage by stationary ground-based geomagnetic observations. The results of applying the developed technique are presented. As a case study, the territory of the central part of the West Siberian platform is chosen. The results confirm the efficiency of the proposed approach for conducting measurements over restricted time due to seasonal and weather conditions. The obtained data are highly accurate, which makes the proposed technique attractive for determining the geomagnetic secular variation in an arbitrary area.
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