Persistence of intense, climate-driven runoff late in Mars history
Persistence of intense, climate-driven runoff late in Mars history
复制标题
火星历史晚期持续存在由气候驱动的强烈径流
DOI：
10.1126/sciadv.aav7710
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发表时间：
2019
期刊：
影响因子：
13.6
通讯作者：
G. Stucky de Quay
中科院分区：
文献类型：
--
作者：
E. Kite;D. Mayer;S. Wilson;Joel M. Davis;A. Lucas;G. Stucky de Quay
火星曾经支持全球分布的河流系统；这些河流比之前认为的更新、更强烈地流动。今天的火星是干燥的，但在火星表面发现了许多由降水滋养的古河流。这些河流的存在是对行星气候演变模型的挑战。我们报告的结果表明，对于给定的集水区，火星上的河流今天比地球上的河流更宽。我们使用火星古河流的尺度(宽度和波长)作为过去径流产量的替代。使用多种方法，我们推断，每天(3-20)kg/m2的强烈径流产生量一直持续到<；30亿年(Ga)以前，可能是<；1Ga以前，并且是全球分布的。因此，从火星科学实验室火星车的结果推断出的强烈径流产生并不是短暂的或局部的异常。相反，由降水补给的径流产生量是全球分布的，强度很大，并且间歇性地持续在>；1 Ga。我们对火星河流径流历史的改进，对导致火星气候潮湿的未知机制提出了新的限制。
Mars once supported globally-distributed river systems; these flowed more recently and more intensely than previously thought. Mars is dry today, but numerous precipitation-fed paleo-rivers are found across the planet’s surface. These rivers’ existence is a challenge to models of planetary climate evolution. We report results indicating that, for a given catchment area, rivers on Mars were wider than rivers on Earth today. We use the scale (width and wavelength) of Mars paleo-rivers as a proxy for past runoff production. Using multiple methods, we infer that intense runoff production of >(3–20) kg/m2 per day persisted until <3 billion years (Ga) ago and probably <1 Ga ago, and was globally distributed. Therefore, the intense runoff production inferred from the results of the Mars Science Laboratory rover was not a short-lived or local anomaly. Rather, precipitation-fed runoff production was globally distributed, was intense, and persisted intermittently over >1 Ga. Our improved history of Mars’ river runoff places new constraints on the unknown mechanism that caused wet climates on Mars.
影响因子：
56.9
作者：
Rebecca M. E. Williams;J. Grotzinger;W. Dietrich;Sanjeev Gupta;D. Sumner;R. Wiens;N. Mangold;M. Malin;K. Edgett;S. Maurice;O. Forni;O. Gasnault;A. Ollila;H. Newsom;G. Dromart;M. Palucis;R. Yingst;R. Anderson;K. Herkenhoff;S. Mouélic;W. Goetz;M. Madsen;A. Koefoed;J. Jensen;J. Bridges;S. Schwenzer;K. Lewis;K. Stack;D. Rubin;Linda C. Kah;J. Bell;J. Farmer;R. Sullivan;T. V. Beek;D. Blaney;O. Pariser;R. Deen
通讯作者：
Rebecca M. E. Williams;J. Grotzinger;W. Dietrich;Sanjeev Gupta;D. Sumner;R. Wiens;N. Mangold;M. Malin;K. Edgett;S. Maurice;O. Forni;O. Gasnault;A. Ollila;H. Newsom;G. Dromart;M. Palucis;R. Yingst;R. Anderson;K. Herkenhoff;S. Mouélic;W. Goetz;M. Madsen;A. Koefoed;J. Jensen;J. Bridges;S. Schwenzer;K. Lewis;K. Stack;D. Rubin;Linda C. Kah;J. Bell;J. Farmer;R. Sullivan;T. V. Beek;D. Blaney;O. Pariser;R. Deen
影响因子：
5.8
作者：
Davis, J. M.;Balme, M.;Gupta, S.
通讯作者：
Gupta, S.