کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1782320 1523974 2007 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Rock glaciers on Mars: Earth-based clues to Mars’ recent paleoclimatic history
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
Rock glaciers on Mars: Earth-based clues to Mars’ recent paleoclimatic history
چکیده انگلیسی

The Mars Orbital Camera onboard the Mars Global Surveyor spacecraft, which is currently orbiting about Mars, has revealed hundreds of pristine lobate and tongue-shaped flows that closely display the morphological characteristics of terrestrial rock glaciers, both tongue- and lobe-shaped forms. Generally located between 30°S and 47°S latitude on Mars, these terrestrial-like flows have important paleoenvironmental implications, including marking environmental change from current, present cold and dry desert martian conditions to cold wetter climates in the past. Paleoenvironmental conditions, hypothesized to have significantly influenced the dimensions of the terrestrial-like flows, is supported through a simple dynamic model with the power-law rheology. The presence of periglacial landforms on Mars indicates the possible presence of permafrost and potential caches of water for future exobiological exploration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Planetary and Space Science - Volume 55, Issues 1–2, January 2007, Pages 181–192
نویسندگان
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