Formation and Dissociation of Clathrate Hydrates on Mars: Polar Caps, Northern Plains and Highlands
Formation and Dissociation of Clathrate Hydrates on Mars: Polar Caps, Northern Plains and Highlands
复制标题
火星上笼形水合物的形成和解离：极地帽、北部平原和高地
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
D. Macayeal
中科院分区：
文献类型：
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作者：
J. Kargel;Kenneth L. Tanaka;V. Baker;G. Komatsu;D. Macayeal
导言：自1970年以来，人们已经认识到，在火星两极（至少是季节性的），在两个极帽的内部，也许在更广泛的范围内，二氧化碳包合物水合物是热力学稳定的。其他非极性气体可能在火星上形成水合物，包括惰性气体、氮、二氧化硫和甲烷[6,8,9]。我们重新研究了火星可能的全球二氧化碳库存，可能的区域脱气事件的规模，可能的笼形物形成机制，以及笼形物水合物的稳定性。笼形物水合物的解离可能是混乱地形、流出通道和北部平原沉积物灾难性形成的重要环节，笼形物可能影响火星极帽和微动峡谷冰流的动力学行为。
Introduction: It has been recognized since 1970 that carbon dioxide clathrate hydrate is thermodynamically stable at the Martian poles (at least seasonally), in the interiors of both polar caps, and perhaps more widely [19]. Other nonpolar gases could form hydrates on Mars, including noble gases, nitrogen, sulfur dioxide, and methane [6,8,9]. We reexamine the possible global CO2 inventory of Mars, the magnitude of possible regional outgassing events, possible mechanisms of formation of clathrates, and the stability of clathrate hydrates. Dissociation of clathrate hydrates may be an important link in the catastrophic formation of chaotic terrain, outflow channels, and northern plains deposits, and clathrates may influence the dynamic behavior of Martian polar caps and ice flows in the fretted canyons.