Olympus Mons Debris-covered Glaciers: Formation, Evolution and Volcano-ice Interactions
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چکیده
منابع مشابه
Debris-covered Glaciers within the Arsia Mons Fan-shaped Deposit: Implications for Glaciation, Deglaciation and the Origin of Lineated Valley Fill
Introduction: Recent MOC and THEMIS data have shed new light upon intriguing flow-like features on Mars including viscous flow-like features [1], lobate debris aprons [2], concentric crater fill, lineated valley fill, and features interpreted as rock glaciers or debris-covered glaciers [3,4,5,6]. These features are distributed over lowto mid-latitudes and all appear to have experienced flow due...
متن کاملOlympus Mons Fan Shaped Deposit Morphology: Evidence for Debris Glaciers
Introduction: Olympus Mons is the largest volcano on Mars, rising over 25 km above the surrounding plains and with a basal diameter greater than 600 km. It is surrounded by a basal escarpment up to 6 km tall. Extending up to 1000 km beyond this scarp are lobes of ridged materials known as the aureole [1, 2]. Superimposed upon the west and northwest aureole deposits at the base of the escarpment...
متن کاملDebris-covered piedmont glaciers along the northwest flank of the Olympus Mons scarp: Evidence for low-latitude ice accumulation during the Late Amazonian of Mars
We use Viking and new MGS and Odyssey data to characterize the lobate deposits superimposed on aureole deposits along the west and northwest flanks of Olympus Mons, Mars. These features have previously been interpreted variously as landslide, pyroclastic, lava flow or glacial features on the basis of Viking images. The advent of multiple high-resolution image and topography data sets from recen...
متن کاملRemnant Buried Ice in the Arsia Mons
Introduction. The western and northwestern flanks of the Tharsis Montes volcanoes were covered by tropical mountain glaciers 125–220 million years ago [1], as evidenced by the morphology, stratigraphic relationships, and spatial distribution of landforms in the fanshaped deposits (FSDs) on each volcano [2-8] and by climate and glacial flow models that predict snow accumulation and ice flow in t...
متن کاملPreservation of ancient ice at Pavonis and Arsia Mons: Tropical mountain glacier deposits on Mars
Large tropical mountain glacier (TMG) deposits on the northwest flanks of the Tharsis Montes and Olympus Mons volcanoes are interpreted to be the record of ancient climates characteristic of Mars several hundred million years ago when planetary spin-axis obliquity was 451. During this era, polar volatiles (predominantly H2O) were mobilized and transferred equatorward, undergoing adiabatic cooli...
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