论文标题
火星南极下方下方的多个冰山下水体被新的马西斯数据揭示
Multiple subglacial water bodies below the south pole of Mars unveiled by new MARSIS data
论文作者
论文摘要
火星先进的雷达在Ultimi scopuli中在南极分层沉积物底部的地下和电离层发声（MARSIS）检测液体水，这使有关当今火星条件下液态水的起源和稳定性的争论重新激发了人们的争论。为了确定该地区的冰川水的程度，我们获得了新数据，在研究区域实现了扩展的雷达覆盖率。在这里，我们基于通常应用于陆地极性冰盖的信号处理程序，介绍并讨论通过对完整MARSIS数据集进行新的分析方法获得的结果。我们的结果加强了在Ultimi scopuli上检测液体体体的主张，并表明附近存在其他湿区。我们建议这些水是高盐高氯酸盐盐水，已知在火星极性区域形成，并被认为可以在低于体质的温度下在地质规模上生存。
The detection of liquid water by the Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) at the base of the south polar layered deposits in Ultimi Scopuli has reinvigorated the debate about the origin and stability of liquid water under present-day Martian conditions. To establish the extent of subglacial water in this region, we acquired new data, achieving extended radar coverage over the study area. Here, we present and discuss the results obtained by a new method of analysis of the complete MARSIS dataset, based on signal processing procedures usually applied to terrestrial polar ice sheets. Our results strengthen the claim of the detection of a liquid water body at Ultimi Scopuli and indicate the presence of other wet areas nearby. We suggest that the waters are hypersaline perchlorate brines, known to form at Martian polar regions and thought to survive for an extended period of time on a geological scale at below-eutectic temperatures.
