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Approximate CRUST1.0 Model-based and Space-domain Calculated Gravitational Effect of the Earth Crust
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 78th EAGE Conference and Exhibition 2016, May 2016, Volume 2016, p.1 - 5
Abstract
Recent deep seismic studies support the existing isostatic systems only to a limited extent and, in some areas, considerable disagreements have been pointed at. This implies that we should attempt to replace the classic isostatic corrections by quantities calculated from a-priori information which should be as independent of the gravity data themselves as possible. We believe that CRUST1.0 model provides applicable material for such an attempt. In our contribution we demonstrate that to calculate gravitational effects of the CRUST1.0 model layers taking the model densities into consideration is in fact a viable option. We have used two different methods of calculation, more or less independent of each other, both of them working in space domain. We believe that space-domain calculations are suitable for employing the results in gravimetrical practice since they not only are synoptic, i.e. offering a general view of the whole, but also enable us to analyze their elementary and differential properties.