火星上赫比斯峡谷的崩塌
(原标题: Collapse in Hebes Chasma on Mars)
2025-07-15
浏览次数: 1461
火星上的赫比斯峡谷发生了什么？赫比斯峡谷是巨大的水手谷峡谷北部的一个洼地。由于凹陷与其他表面特征没有联系，因此尚不清楚内部物质的去向。赫伯斯峡谷内部是赫伯斯门萨，这是一个5公里高的台地，似乎经历了不寻常的部分坍塌——这种坍塌可能会提供线索。这张特色图片是由欧洲航天局的火星快车探测器拍摄的，它目前正在火星轨道上运行，展示了裂缝的细节和中央台地上不寻常的马蹄形凹痕。来自台地的物质似乎流到了裂口的底部，而可能存在的暗层似乎像墨水一样在下坡着陆时聚集在一起。有一种假说认为，在赫比斯峡谷的一些较低的地层中含有含盐的岩石，盐溶解在融化的冰流中，这些冰流通过洞穴流入地下蓄水层。
查看原文解释
What's happened in Hebes Chasma on Mars? Hebes Chasma is a depression just north of the enormous Valles Marineris canyon. Since the depression is unconnected to other surface features, it is unclear where the internal material went. Inside Hebes Chasma is Hebes Mensa, a 5 kilometer high mesa that appears to have undergone an unusual partial collapse -- a collapse that might be providing clues. The featured image, taken by ESA's robotic Mars Express spacecraft currently orbiting Mars, shows great details of the chasm and the unusual horseshoe shaped indentation in the central mesa. Material from the mesa appears to have flowed onto the floor of the chasm, while a possible dark layer appears to have pooled like ink on a downslope landing. One hypothesis holds that salty rock composes some lower layers in Hebes Chasma, with the salt dissolving in melted ice flows that drained through holes into an underground aquifer.