歐克西亞高原

歐克西亞高原
由火星偵察軌道衛星拍攝的假色影像
位置歐克西亞沼區
经纬18°16′30″N 335°22′05″E / 18.275°N 335.368°E / 18.275; 335.368

歐克西亞高原（Oxia Planum）是一個位於火星的高原。該高原被選定為歐洲太空總署ExoMars計畫的火星車（英语：ExoMars (rover)）登陸地點[1][2]，該地點低於火星大地水準面超過3000公尺[3]。

概要

歐克西亞高原是火星表面暴露黏土岩層範圍最大的區域之一，表面岩層年齡約39億年[4]。該區域有富含鐵和鎂的黏土礦物，代表當地曾經有大量液態水存在。該區域位於一系列峽谷之中，表面暴露的岩層顯示了不同地質時間下各自相異的沉積岩層，可表示不同水量的各時期下各種沉積狀態。

歐克西亞高原中的黏土沉積可能位於殘餘的沖積扇或三角洲表面以下，接近庫貢谷（Coogoon Vallis）的出口；這樣的環境可能保留了生命印迹，不使其受到火星表面強烈輻射和高度氧化環境所破壞[4][5][6]

Oxia Planum - Location Map.
Oxia Planum - Geological Context - Morphology.

參見

參考資料

  1. ^ Amos, Jonathan. ExoMars rover: Landing preference is for Oxia Planum. BBC News. October 21, 2015 [October 22, 2015]. （原始内容存档于2017-04-28）. 
  2. ^ Atkinson, Nancy. Scientists Want ExoMars Rover to Land at Oxia Planum. Universe Today. October 21, 2015 [October 22, 2015]. （原始内容存档于2019-06-01）. 
  3. ^ ESA mission updates （页面存档备份，存于互联网档案馆）. Emily Lakdawalla; 5 November 2015.
  4. ^ 4.0 4.1 Durnham, R. ExoMars 2018 rover heading for Oxia Planum. Red Planet Report. October 21, 2015 [October 22, 2015]. （原始内容存档于2016-06-16）. 
  5. ^ Thollot, P.; Quantin, C. Oxia Planum, landing site for Mars 2020 (PDF). Universite de Lion, France. May 14, 2014 [October 22, 2015]. （原始内容存档 (PDF)于2016-06-03）. 
  6. ^ Staff. Possible Future Mars Landing Site in Oxia Planum - High Resolution Imaging Science Experiment. The University of Arizona. October 1, 2014 [October 21, 2015]. （原始内容存档于2016-05-12）. 

外部連結

维基共享资源上的相关多媒体资源：歐克西亞高原

Template:Exomars

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