Continued deceleration of Whillans ice stream West Antartica

Ian Joughin, R. A. Bindschadler, M. A. King, D. Voigt, R. B. Alley, S. Anandakrishnan, H. Horgan, L. Peters, P. Winberry, S. B. Das, G. Catania

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Abstract

Earlier observations indicated that Whillans Ice Stream slowed from 1973 to 1997. We collected new GPS observations of the ice stream's speed in 2003 and 2004. These data show that the ice stream is continuing to decelerate at rates of about 0.61%/yr2, with faster rates near the grounding line. Our data also indicate that the deceleration extends over the full width of the ice plain. Extrapolation of the deceleration trend suggests the ice stream could stagnate sometime between the middle of the 21st and 22nd Centuries.

Original languageEnglish (US)
Article numberL22501
Pages (from-to)1-4
Number of pages4
JournalGeophysical Research Letters
Volume32
Issue number22
DOIs
StatePublished - Nov 28 2005

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

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    Joughin, I., Bindschadler, R. A., King, M. A., Voigt, D., Alley, R. B., Anandakrishnan, S., Horgan, H., Peters, L., Winberry, P., Das, S. B., & Catania, G. (2005). Continued deceleration of Whillans ice stream West Antartica. Geophysical Research Letters, 32(22), 1-4. [L22501]. https://doi.org/10.1029/2005GL024319