Global ETD Search
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Showing 1 to 4 of 4 for “"Cryoturbation"”.
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Geologic Setting of the Phoenix Lander Mission Landing Site
… and destruction processes: e.g., aeolian infill, cryoturbation, relaxation of icy substrate). Rock abundances increase near craters for the older plains and rocks with their dark shadows explain the reason for the few percent lower albedo for these plains as opposed to the Heimdal ejecta deposits. …
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Soil and permafrost distribution, soil characterisation and soil vulnerability to human foot trampling, Wright Valley, Antarctica
… Haploturbels where there is field evidence of cryoturbation. As a generalization, at either end of the valley, soil moisture recharge from moist coastal air masses (eastern end) and blowing snow drifts maintain the depth to permafrost in which ice-cement occurs at <70 cm. The resulting shallow …
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Quantifying biophysical and biogeochemical influence on northern high latitudes greenhouse gases dynamics
… for the vertical movement of SOC caused by cryoturbation and its linkage to the frost heaving process, oxygen availability, organo-mineral interaction and, depth-dependent environmental modifiers. After evaluating the model processes using the site and regional level heterotrophic …
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Biogeochemical and ecological responses to warming climate in High Arctic polar deserts
High Arctic polar deserts cover 26% of the Arctic and are found to store a larger amount of soil organic carbon (SOC) in the permafrost and to emit higher amounts of the main greenhouse gases (GHGs) than previously expected. However, the mechanisms of the main GHG production are not clear. …