Comparative analysis of oceanic corrections to gravity calculated from the PREM and IASP91 modelsстатья
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Дата последнего поиска статьи во внешних источниках: 15 августа 2019 г.
Аннотация:The effect of oceanic loading Δg in the vertical component of gravity is assessed in two different models of the Earth, namely, the PREM model and the European model IASP91. For this purpose, we considered the Molodensky boundary problem which describes the deformations of the gravitating elastic compressible sphere. We derived the equation that links the boundary conditions on the surface and at the bottom of the mantle, and calculated the load Love numbers for the studied models. By the example of the territory of Western Europe, it is shown that the value of the correction, Δg, noticeably depends on the applied seismic models of the upper mantle and the lithosphere.