Estimated Minimum Life Span of the Jezero Fluvial Delta (Mars).
Estimated Minimum Life Span of the Jezero Fluvial Delta (Mars).
复制标题
杰泽罗河流三角洲（火星）的估计最短寿命。
作者：
F. Salese;M. Kleinhans;N. Mangold;V. Ansan;W. McMahon;Tjalling de Haas;G. Dromart
热泽罗三角洲边缘的古湖底已被选为美国宇航局2020年火星车着陆点。在这篇文章中，我们展示了湖泊填充和三角洲形成的序列，并限制了热泽罗古湖泊的最小寿命从沉积学和水文分析。利用高分辨率成像科学实验（美国航天局火星勘测轨道飞行器）和高分辨率立体照相机（欧空局火星快车）提供的图像，可以识别三角洲演变的两个主要阶段：（1）热泽罗边缘破裂前的盆地充填和（2）三角洲形成本身。我们的研究结果表明，三角洲的形成发生在至少90-550年的水文活动。热泽罗边缘的突破至少发生在三个不同的事件中，其跨越的时间比整个三角洲形成的时间长得多。这一演化历史意味着，Jezero湖底可能是细粒沉积物堆积的避风港，并拥有一个具有重要天体生物学意义的活跃环境。
The paleo-lake floor at the edge of the Jezero delta has been selected as the NASA 2020 rover landing site. In this article, we demonstrate the sequences of lake filling and delta formation and constrain the minimum life span of the Jezero paleo-lake from sedimentological and hydrological analyses. Two main phases of delta evolution can be recognized by utilizing imagery provided by the High Resolution Imaging Science Experiment (NASA Mars Reconnaissance Orbiter) and High Resolution Stereo Camera (ESA Mars Express): (1) basin infilling before the breaching of the Jezero rim and (2) the delta formation itself. Our results suggest that delta formation occurred over a minimum period of 90-550 years of hydrological activity. Breaching of the Jezero rim occurred in at least three distinct episodes, which spanned a far longer time-period than overall delta formation. This evolutionary history implies that the Jezero-lake floor would have been a haven for fine-grained sediment accumulation and hosted an active environment of significant astrobiological importance.
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