论文标题
乌尔蒂米·斯科普利（Ultimi Scopuli
Geologic context of the bright MARSIS reflectors in Ultimi Scopuli, South Polar Layered Deposits, Mars
论文作者
论文摘要
在南极分层沉积物（SPLD）下，使用高级雷达在地下和电离层响声（MARSIS）数据下发现了雷达 - 光线的基础反射器（SPLD），并具有令人兴奋但有争议的解释：来自冰川下湖的液态水。我们将SPLD的表面映射到上方并围绕推定的湖泊（1：2M地图刻度）绘制，以提供地质环境来解释明亮的基础反射器。我们使用Themis Daytime IR（100 m/Pixel），CTX（6 m/Pixel）和Hirise（25 cm/Pixel）数据来表征地质单元和典型的表面粗糙度。我们找到了由于二氧化碳和风格相关的过程而引起的多个地质单元的证据。我们找不到与假定湖泊位置相关的表面修饰的证据。这与将Marsis基底雷达反射器解释为冰山下湖不一致。
Radar-bright basal reflectors have been detected below the South Polar Layered Deposits (SPLD), Mars using Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) data and have an exciting but controversial interpretation: liquid water from subglacial lakes. We mapped the surface of the SPLD immediately above and surrounding the putative lakes (1:2M map scale) in order to provide geologic context for interpretation of the bright basal reflectors. We use THEMIS daytime IR (100 m/pixel), CTX (6 m/pixel), and HiRISE (25 cm/pixel) data to characterize geologic units and typical surface roughness. We find evidence for multiple geologic units with features due to CO2 and aeolian-related processes. We do not find evidence for surface modification linked to the postulated lake locations. This is not consistent with the interpretation of the MARSIS basal radar reflector as subglacial lakes.
