i18glacial - Glacial Geomorphology Development of a glacier...

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Unformatted text preview: Glacial Geomorphology Development of a glacier Types of glaciers Glacial landforms History of glacier History of glaciers Glacial Geomorphology What causes glaciation? Impact of global climate change on glaciers Periglacial processes and landscape Periglacial processes and landscapes Development of a Glacier Glacier slowly moving mass of dense ice formed by gradual thickening, compaction, and refreezing of snow & water over time At least 40 m thick to become glacie At least 40-m thick to become glacier Development of a Glacier 1. After summer melt, some snow left over 2. Weight and partial melting : Firn, transition from snow to ice 3. Further compaction, ice crystals align: dense glacial ice Glacial Movement Glaciers move through internal deformation Interior of glacier plastic Top brittle Glacial Mass Budget Glacial input : Snow Glacial output : ice, meltwater or water vapor Glacial Mass Budget Zone of Accumulation...
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This note was uploaded on 10/06/2011 for the course GEOL 101 taught by Professor Staff during the Spring '11 term at S.F. State.

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i18glacial - Glacial Geomorphology Development of a glacier...

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