The nature of terrains of different types on the surface of Venus and selection of potential landing sites for a descent probe of the Venera-D Mission

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• 作者：M. A. Ivanov ; L. V. Zasova ; M. V. Gerasimov ; O. I. Korablev…
• 关键词：Venus ; resurfacing regimes ; Venera ; D mission ; landing sites
• 刊名：Solar System Research
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：51
• 期：1
• 页码：1-19
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Astronomy, Astrophysics and Cosmology; Planetology; Astronomy, Observations and Techniques; Astrophysics and Astroparticles;
• 出版者：Pleiades Publishing
• ISSN：1608-3423
• 卷排序：51

文摘

We discuss a change in the resurfacing regimes of Venus and probable ways of forming the terrain types that make up the surface of the planet. The interpretation of the nature of the terrain types and their morphologic features allows us to characterize their scientific priority and the risk of landing on their surface to be estimated. From the scientific point of view, two terrain types are of special interest and represent easily achievable targets: the lower unit of regional plains and the smooth plains associated with impact craters. Regional plains are probably a melting from the upper fertile mantle. The material of smooth plains of impact origin is a well-mixed and representative sample of the Venusian crust. The lower unit of regional plains is the most widespread one on the surface of Venus, and it occurs within the boundaries of all of the precalculated approach trajectories of the lander. Smooth plains of impact origin are crossed by the approach trajectories precalculated for 2018 and 2026.