Premium
Continued deceleration of Whillans Ice Stream, West Antarctica
Author(s) -
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.
Publication year - 2005
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2005gl024319
Subject(s) - ice stream , geology , extrapolation , antarctic sea ice , drift ice , arctic ice pack , sea ice , cryosphere , climatology , mathematical analysis , mathematics
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 0.6%/yr 2 , 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.