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Abstract

Summary

Several global databases of gravitational field anomalies obtained by merging terrestrial, altimetry-derived, airborne and satellite gravity data are currently available to researchers. The maximum degree of spherical harmonics currently achieved for these models is 2190, which corresponds to a spatial resolution of 10 km and allows using this data for regional density modeling. The presence of several models, differing in the source data and methods of their processing, necessitates the choice of the desired model, applicable for the study of a particular region. Our efforts are aimed at comparing these models in the territory of the Magadan region, known for its significant gold potential.

The comparison of datasets showed that these global models could be used as initial data for constructing density models of the deep structure of the lithosphere. The free-air anomalies for the , GECO, EIGEN-6C4 and EGM2012 models in the selected territory practically coincide. The Bouguer anomalies of the EGM2012 model can be used as an alternative to land and aerial surveys, of no data available or to equalize their values for different surveys.

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/content/papers/10.3997/2214-4609.201902135
2019-05-15
2024-04-27

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201902135
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Comparison of global gravity field databases for the territory of the Magadan region
Conference Proceedings 2019, 1 (2019); https://doi.org/10.3997/2214-4609.201902135
/content/papers/10.3997/2214-4609.201902135
/content/papers/10.3997/2214-4609.201902135
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