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Thickness changes on Whillans Ice Stream and Ice Stream C, West Antarctica, derived from laser altimeter measurements

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Repeat airborne laser altimeter measurements are used to derive surface elevation changes on parts of Whillans Ice Stream and Ice Stream C, West Antarctica. Elevation changes are converted to estimates of ice equivalent thickness change using local accumulation rates, surface snow densities and vertical bedrock motions. The surveyed portions of two major tributaries of Whillans Ice Stream are found to be thinning almost uniformly at an average rate of ~1m a-1. Ice Stream C has a complicated elevation-change pattern, but is generally thickening.These results are used to estimate the contribution of each surveyed region to the current rate of global sea-level rise.

Document Type: Research Article

DOI: http://dx.doi.org/10.3189/172756503781830683

Publication date: March 1, 2003

More about this publication?
  • The Journal of Glaciology is published six times per year. It accepts submissions from any discipline related to the study of snow and ice. All articles are peer reviewed. The Journal is included in the ISI Science Citation Index.
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