Hydrated crust stores Mars' missing water
Hydrated crust stores Mars' missing water
复制标题
水合地壳储存了火星缺失的水
DOI：
10.1126/science.abh4469
复制
发表时间：
2021
期刊：
影响因子：
56.9
通讯作者：
Kurokawa Hiroyuki
中科院分区：
文献类型：
--
作者：
Kurokawa Hiroyuki;Miura Yayoi N.;Sugita Seiji;Cho Yuichiro;Leblanc Francois;Terada Naoki;Nakagawa Hiromu;Kurokawa Hiroyuki
火星是一个干旱寒冷的星球。由于温度低，其表面水主要是极地冰。冰的数量远远小于地球海水的数量，大约三个数量级。在社区使用的一个单元中，总体积为20至40米全球等效层（GEL）。然而，火星探测任务已经发现了大量的证据，证明有大量的液态水塑造了火星景观。这些证据包括凌空网络、古海岸线、砾岩和水合矿物。从地貌学上估计的失踪水量是海洋尺度的，100至1500米GEL（1）。在第56页，Schelleret al。(2)报告了一项理论建模研究，以量化表层地壳中储存水的水合矿物质的数量。这可能是火星缺失的古代水的最大水槽。
Mars is an arid and cold planet. Its surface water is found mainly as polar ice because of the low temperature. The amount of ice is far smaller than that of Earth's seawater by about three orders of magnitude. In a unit used in the community, the total volume is ∼20 to 40 m global equivalent layer (GEL). However, Mars exploration missions have found plenty of evidence for a large amount of liquid water that shaped the Mars landscape. Such evidence includes volley networks, paleo-shorelines, conglomerates, and hydrated minerals. The geomorphologically estimated volume of missing water is on an ocean scale, ∼100 to 1500 m GEL (1). On page 56 of this issue, Schelleret al.(2) report a theoretical modeling study to quantify the amount of hydrated minerals in the surface crust that stores water. This is possibly the largest sink of Mars' missing ancient water.