Contribution of the Patagonia Icefields of South America to Sea Level Rise
作者： Eric Rignot , Andres Rivera , Gino Casassa
关键词: Digital elevation model 、 Sea level 、 Glacier 、 Ice field 、 Thinning 、 Physical geography 、 Precipitation 、 Meteorology 、 Geology 、 Period (geology) 、 Shuttle Radar Topography Mission
摘要: Digital elevation models of the Northern and Southern Patagonia Icefields South America generated from 2000 Shuttle Radar Topography Mission were compared with earlier cartography to estimate volume change largest 63 glaciers. During period 1968/1975-2000, these glaciers lost ice at a rate equivalent sea level rise 0.042 +/- 0.002 millimeters per year. In more recent years 1995-2000, average thinning rates have than doubled an 0.105 0.011 The are quickly can be explained by warmer air temperatures decreased precipitation, their contribution unit area is larger that Alaska
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