Abstract

A model distribution of anomalous masses in the southwestern part of Elysium Planitia under the surface of the site of the InSight mission seismometer has been obtained. Numerical simulations are performed with the S-approximation method by expansions of the data on the Martian topography and gravitational field (the MRO120D model) in spherical harmonics to the 90th degree and order. Inhomogeneity of the density structure in the form of zones, containing blocks of higher and lower density in the subsurface layers of the study area, has been revealed.

中文翻译：

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火星地下层的密度异常：InSight Mission地震仪站点的模型估计

摘要

获得了在InSight任务地震仪所在地表下的极地大意盘西南部异常质量的模型分布。使用S逼近方法，通过将火星地形和引力场（MRO120D模型）上的数据以球谐函数扩展到90度和高阶来执行数值模拟。已经揭示了区域形式的密度结构的不均匀性，该区域在研究区域的地下层中包含较高和较低密度的块。