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Reference field for the airborne magnetic data

Abstract

A comparison of satellite and surface surveys of geomagnetic anomalies is performed. A special regional aeromagnetic survey was carried out at the Urals. Different models of the reference field for the region under investigation were studied. A reference field has been constructed using polynomial of 4-th order. The long-wavelength component of the anomalous magnetic field was selected. It is shown that when dividing the magnetic field of the Earth into a main and anomalous parts by spherical harmonic analysis, a large part of the magnetic field from the crust is included within the main field model. A model of the crustal magnetization of the Northern Eurasia is constructed.

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Correspondence to N. V. Fedorova.

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Fedorova, N.V., Shapiro, V.A. Reference field for the airborne magnetic data. Earth Planet Sp 50, 397–404 (1998). https://doi.org/10.1186/BF03352126

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  • DOI: https://doi.org/10.1186/BF03352126

Keywords

  • Magnetic Anomaly
  • Reference Field
  • Aeromagnetic Data
  • Spherical Harmonic Analysis
  • Spherical Harmonic Series