CAJ | 학술논문

最近美国航空与空间计划署(NASA)开展的卡西尼-惠更斯外空探测计划发现,在直径为500 km的卫星--土卫二上存在水冰和间隙泉的喷发活动.这一现象和在火星上工作的"机遇号"和"勇气号"漫游车所发现的液态水一起,证明了除地球以外的其他星球上过去和现在都存在水,其中的一些星体还有火山活动的证据,这意味着这些星球上可能存在过热液活动地质过程.讨论了火星、木卫二和土卫二可能存在的热液系统类型.这些热液系统类型是根据地球上的构造背景进行相似性研究后得出的,例如海底、火山和裂谷系统.将东非裂谷和贝加尔湖裂谷系统与火星Tharsis高原上巨大的水手大峡谷进行了对比,这些地区都是由地幔柱作用下构造-热液活动导致的地壳抬升、火山和裂谷作用.在火星上,地下冰或低温层会在火山活动和(或)小行星或彗星撞击作用下溶解而形成热液对流.
최근미국항공여공간계화서(NASA)개전적잡서니-혜경사외공탐측계화발현,재직경위500 km적위성--토위이상존재수빙화간극천적분발활동.저일현상화재화성상공작적"궤우호"화"용기호"만유차소발현적액태수일기,증명료제지구이외적기타성구상과거화현재도존재수,기중적일사성체환유화산활동적증거,저의미착저사성구상가능존재과열액활동지질과정.토론료화성、목위이화토위이가능존재적열액계통류형.저사열액계통류형시근거지구상적구조배경진행상사성연구후득출적,례여해저、화산화렬곡계통.장동비렬곡화패가이호렬곡계통여화성Tharsis고원상거대적수수대협곡진행료대비,저사지구도시유지만주작용하구조-열액활동도치적지각태승、화산화렬곡작용.재화성상,지하빙혹저온층회재화산활동화(혹)소행성혹혜성당격작용하용해이형성열액대류.
Recent images from the NASA Cassini-Huygens mission to the outer planets have shown evidence of water ice and gey ser-like jets on Enceladus, a Saturnian moon, only about 500 km across. This, together with the data provided by numerous mis sions to Mars, including the Spirit and Opportunity rovers, are evidence that liquid water is, and was, present on planetary bodies other than the Earth in the solar system. Some of these bodies also contain evidence of volcanism, signifying that hydrothermal processes are, or may have been, active in their geological history. In this paper, we speculate on the types of hydrothermal sys tems that could have been and/or may be present on Mars, Europa (a moon of Jupiter) and Enceladus. These hydrothermal sys tems are modelled on terrestrial analogues, such as those on the seafloor, volcanic edifices, and in rift structures. Analogies are proposed between the East African Rift System and the Baikal Rift System with the Tharsis regi on of Mars, including the giant rift, Valles Marineris. Both regions are the result of mantle plume tectono-thermal activity that caused crustal uplift, volcanism and rifting. On Mars, we suggest that the subsurface ice, or cryosphere, was liquefied as a result of igneous activity and/or asteroid or cometary impacts, generating convecting cells of hydrothermal fluids. For Europa and Enceladus, published models of seafloor style hydrothermal systems may explain the features associated with these bodies.