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Evidence from the Mars Express High Resolution Stereo Camera for a frozen sea close to Mars' equator

机译：来自Mars Express高分辨率立体相机的证据表明，靠近火星赤道的冰冻海域

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It is thought that the Cerberus Fossae fissures on Mars were the source of both lava and water floods(1,2-4) two to ten million years ago(1,2,5). Evidence for the resulting lava plains has been identified in eastern Elysium(1,2,4,6 - 8), but seas and lakes from these fissures and previous water flooding events were presumed to have evaporated and sublimed away(9-11). Here we present High Resolution Stereo Camera images from the European Space Agency Mars Express spacecraft that indicate that such lakes may still exist. We infer that the evidence is consistent with a frozen body of water, with surface pack-ice, around 5 degrees north latitude and 150 degrees east longitude in southern Elysium. The frozen lake measures about 800 x 900 km in lateral extent and may be up to 45 metres deep - similar in size and depth to the North Sea. From crater counts, we determined its age to be 5 +/- 2 million years old. If our interpretation is confirmed, this is a place that might preserve evidence of primitive life, if it has ever developed on Mars.
机译：人们认为，火星上的地幔裂隙是两到一千万年前的熔岩和洪水的源头（1,2-4）（1,2,5）。极乐世界东部（1,2,4,6-8）已经确定了形成熔岩平原的证据，但据推测这些裂缝和先前的水浸事件造成的海洋和湖泊已经蒸发并升华了（9-11）。在这里，我们展示了来自欧洲航天局“火星快车”航天器的高分辨率立体相机图像，这些图像表明此类湖泊可能仍然存在。我们推断，证据与极乐世界南部北纬5度左右，东经150度左右的冻结水体和表面冰块是一致的。冰湖的横向尺寸约为800 x 900 km，可能长达45米，其大小和深度与北海相似。根据火山口的数量，我们确定其年龄为5 +/- 2百万岁。如果我们的解释得到证实，那么这个地方可能保存了原始生命的证据，如果它已经在火星上发展过的话。

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