Model Estimates of Non-Hydrostatic Stresses in the Martian Crust and Mantle: 2−Three-Level Model


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Regions of maximum shear and tension-compression stresses in the Martian interior have been revealed using the three-level compensation model. Nonequilibrium relief, density anomalies at the crust−mantle boundary, and density anomalies at the base of the lithosphere are the sources of the anomalous gravitational field. The thickness of elastic lithosphere positioned on a weak layer that has partially lost its elastic properties varies from 150 to 500 km. The weakening of the layer under the lithosphere is simulated by a tenfold lower value of the shear modulus down to the core boundary. In general, the stresses for the threelevel compensation model differ from the values obtained for the two-level model (nonequilibrium relief and density anomalies at the crust−mantle boundary are the sources of the anomalous gravitational field) by 5−10%. Considerable differences between the models of two-level and three-level compensation are revealed beneath Hellas and Argyre regions.

作者简介

A. Batov

Trapeznikov Institute of Control Sciences of the Russian Academy of Sciences; Schmidt Joint Institute of Physics of the Earth

编辑信件的主要联系方式.
Email: batov@ipu.ru
俄罗斯联邦, Moscow; Moscow

T. Gudkova

Schmidt Joint Institute of Physics of the Earth

Email: batov@ipu.ru
俄罗斯联邦, Moscow

V. Zharkov

Schmidt Joint Institute of Physics of the Earth

Email: batov@ipu.ru
俄罗斯联邦, Moscow

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