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Unformatted text preview: basal sliding of temperate (wet-based) glaciers includes regelation (melt and refreezing) around small obstacles and enhanced creep (local increase in stress and flow rate) around larger obstacles variations in velocity high velocity in thickest ice, i.e. in the middle of the glacier and near the equilibrium line extending flow o acceleration with increasing slope or thickness o flow lines are directed towards the bed promoting erosion o causes crevasses and, on steep slopes, ice falls compressive flow o deceleration with decreasing slope or thickness ( e.g. the terminus) <li>flow lines are directed upward, carrying debris to the ice surface </li...
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- Fall '10