火星希貝斯恰斯瑪的坍塌
Collapse in Hebes Chasma on Mars

發表日期:2025-07-15
火星上的希伯斯沼澤發生了什麼?Hebes Chasma 是一個窪地,位於巨大的 Marineris 谷峽谷以北。 由於該窪地與其他地表特徵沒有聯絡,因此尚不清楚內部物質的去向。希伯斯岩漿內部是希伯斯門薩(Hebes Mensa),這是一個 5 公里高的山丘,似乎經歷了一次不尋常的部分坍塌--這次坍塌可能提供了一些線索。這張特寫圖片是由歐空局正在火星軌道上執行的機器人火星快車太空飛行器拍攝的,它展示了鴻溝的細節以及中心臺地上不尋常的馬蹄形凹陷。來自中峰的物質似乎流到了峽谷的地面上,而可能的暗層似乎像墨水一樣在下坡著陸時彙集在一起。 有一種假說認為,含鹽岩石構成了希伯斯岩漿的一些下層,鹽溶解在融化的冰流中,冰流透過孔洞流入地下蓄水層。
原文: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.
※ 本文由萌芽機器人自動轉貼自每日一天文圖(Astronomy Picture of the Day,APOD),原文為英文,正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理,內容僅供參考,若有任何錯誤之處還請見諒!
關於每日一天文圖:每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務,網站每天提供一張影像或圖片,並由天文學家撰寫扼要說明其特別之處。