Spatial and temporal evolution of Pine Island Glacier thinning, 1995-2006
作者： D. J. Wingham , D. W. Wallis , A. Shepherd
DOI: 10.1029/2009GL039126
关键词: Thinning 、 Geomorphology 、 Antarctic ice sheet 、 Glacier terminus 、 Ice stream 、 Tidewater glacier cycle 、 Glacier mass balance 、 Geology 、 Tributary 、 Glacier
摘要: We use ERS-2 and ENVISAT satellite radar altimetry to examine spatial temporal changes in the rate of thinning Pine Island Glacier, West Antarctica, during period 1995 2006. show that pattern has both accelerated spread inland encompass tributaries flowing into central trunk glacier. Within 5,400 km(2) trunk, average volume loss quadrupled from 2.6 +/- 0.3 km(3) yr(-1) 10.1 The region lightly grounded ice at glacier terminus is extending upstream, are consistent with effects a prolonged disturbance flow, such as ocean- driven melting. If acceleration continues its present rate, main PIG will be afloat within some 100 years, six times sooner than anticipated. Citation: Wingham, D.J., D.W. Wallis, A. Shepherd (2009), Spatial evolution Glacier thinning, 1995-2006, Geophys. Res. Lett., 36, L17501, doi: 10.1029/2009GL039126.
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