Retreating glaciers have a negative budget growing

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accumulation or ablation that occurs. Retreating glaciers have a negative budget, growing smaller as its edges melt back. The glacier gets smaller allowing snow from above to collapse on it. The runoff water could potentially flood lands around it. If there is civilization around, those towns will flood and be damaged. Advancing glaciers have a positive budget, where snow accumulation results in the lower edges being pushed outward and downward. This can lead to too much weight on the edges. Advancing glaciers can get too heavy and collapse causing a chain reaction sometimes. Glaciers transport material as they move, while sculpting their path. A glacier can reshape the landscape because they are so large. The ice erodes the land surface and carries the material far away from their original locations. An example of glaciers shaping
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the landscape is fiords. Fiords are formed when sea level rises, drowning the glacially carved valleys, creating coastal inlets. Moraines can also form when the ice melts leaving long, narrow ridges that show where the glacier used to be. Accessible glaciers provide great benefits to people. People living in La Paz, Bolivia rely on glacial melting from a nearby ice cap to provide water. Farmers in developing countries spread soil and ashes over snow to make it melt quicker. They used this to water their crops during dry periods. Glaciers also help generate hydroelectric power. Scientists and engineers generate electricity by damming glacial melt water. Glaciers provide benefits but they can also be dangerous. Floods can occur when large amounts of ice are melted and run down the mountain. Avalanches can occur when glaciers have a positive budget. These avalanches are dangerous, shutting down cities. Glaciers are melting away quicker compared to last century, possibly creating flooding problems. "All About Glaciers." n.pag. Web. 30 Apr 2012. < ;. Freeman, Tom. "Glaciers." Geoscience Laboratory Manual . Print.
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  • Fall '13
  • SteveBoss
  • Geology, Glacier, La Paz, Ricky Hong, Geoscience Laboratory Manual

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