Morphometric evidence of 3.6 Ga glacial valleys and glacial cirques in martian highlands: South of Terra Sabaea
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چکیده
منابع مشابه
Morphometric Properties of Glacial Cirques in Zagros Mountain, IRAN
The morphometry of 187 cirques like forms is performed in the selected regions of Zagros Mountain with the use of GIS. The cirques like forms were delimitated manually and their headwall and floor boundaries were modified based on the classified slope map. The power law functions were fitted to 187 longitudinal cross-sections of the cirque like forms and their parameters were analyzed. All the ...
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Despite conditions on Mars favoring cold-based glaciers, there is also evidence of wetbased glaciers. We compare potential sources of basal water, and conclude that several melt mechanisms are possible. Gas hydrate clathrates within glacial ice can cause melting point depression, and are an intriguing possibility because the dissociation of clathrates releases a large quantity of energy in addi...
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Earth surface processes operate on various spatio-temporal scales and produce landforms that are structured in a nested hierarchical manner. Semi-automated extraction of selected landform types from digital elevation models (DEMs) is of great importance in geomorphology. Object-based image analysis (OBIA) provides an attractive framework for multi-scale terrain segmentation and classification. ...
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A study of misfit streams and meandering depressions developed in ground moraine deposits near Dayton, Ohio has indicated that streams are re-establishing old stream courses, which persist as buried channels previously carved into bedrock. The erosion of deep meandering channels in bedrock appears consistent with melt-water streams let down through glacial ice. Such channels would subsequently ...
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ژورنال
عنوان ژورنال: Geomorphology
سال: 2019
ISSN: 0169-555X
DOI: 10.1016/j.geomorph.2019.02.022