Anomalies of Density, Stresses, and the Gravitational Field in the Interior of Marsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Abstract—We determined the possible compensation depths for relief harmonics of different degrees and
orders. The relief is shown to be completely compensated within the depth range of 0 to 1400 km. The lateral
distributions of compensation masses are determined at these depths and the maps are constructed. The pos
sible nonisostatic vertical stresses in the crust and mantle of Mars are estimated to be 64 MPa in compression
and 20 MPa in tension. The relief anomalies of the Tharsis volcanic plateau and symmetric feature in the east
ern hemisphere could have arisen and been maintained dynamically due to two plumes in the mantle sub
stance that are enriched with fluids. The plumes that originate at the core of Mars can arise and be maintained
by the anomalies of the inner gravitational field achieving +800 mGal in the region of plume formation, –
1200 mGal above the lower mantle–core transition layer, and –1400 mGal at the crust.