GLY-1103 Lecture 7: Glaciers and Climate Change notes
Document Summary
Types of glaciers: glaciers are found @ high latitudes = continental glaciers , glaciers @ high elevations = alpine glaciers . Thermal categories: used to classify glaciers determined by climate, temperate - at or above melting temp, polar - well below melting temp. How do glaciers move: wet-bottom glacier - water ows along base of glacier, basal sliding - ice/slipping/melt water, dry-bottom glacier - cold base is frozen to substrate. Meteorite hunters paradise: all rocks found on surface of antartica are meteorites, mecca of meteorites, large amount near trans-anartic mountains, great place for meteorite hunting. Into the ocean: tip of the iceberg, drop stones tell us where glaciers have been, bouancy. Advance and retreat: if accumulation = ablation then glacial toe stays in place, if accumulation > ablation then glacial toe advances, if accumulation < ablation then glacial toe retreats. !2: core of greenland is thickening, however the edges are melting off at an even.
