Ice stream D flow speed is strongly modulated by the tide beneath the Ross Ice Shelf

The flow velocity of ice stream D, West Antarctica has been measured to vary by a factor of three over the course of a day. These fluctuations are measured at the grounding line as well as upstream of the grounding line in the ice plain of ice stream D. The diurnal velocity fluctations appear to be...

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Bibliographic Details
Published in:Geophysical Research Letters
Main Authors: Anandakrishnan, S, Voigt, DE, Alley, RB, King, MA
Format: Article in Journal/Newspaper
Language:English
Published: Wiley-Blackwell Publishing 2003
Subjects:
Earth Sciences
Physical geography and environmental geoscience
Physical geography and environmental geoscience not elsewhere classified
West Antarctica
Ross Ice Shelf
Antarc*
Antarctica
Ice Shelf
Ice Stream D
Online Access:https://doi.org/10.1029/2002GL016329
http://ecite.utas.edu.au/81797
Description
Summary:The flow velocity of ice stream D, West Antarctica has been measured to vary by a factor of three over the course of a day. These fluctuations are measured at the grounding line as well as upstream of the grounding line in the ice plain of ice stream D. The diurnal velocity fluctations appear to be driven by the tide beneath the Ross Ice Shelf. These results suggest that there is significant, and heretofore poorly understood, influence of the ocean tide and of the ice shelf on the dynamics of ice stream flow.

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