Short Name:
tulaczyk0636970

COLLABORATIVE RESEARCH: Elevation Change Anomalies in West Antarctica and Dynamics of Subglacial Water Transport Beneath Ice Streams and their Tributaries

We performed field and remote sensing investigations of Elevation Change Anomalies (henceforth ECAs) discovered recently in the Ross Sea sector of the West Antarctic Ice Sheet (WAIS) (Gray et al., 2005). The field component focused on using Global Positioning System (GPS) technology to obtain two-year-long time series of ice surface elevation changes for four ECAs identified on Whillans Ice Stream (BIS). We conjecture that the ECAs can be used: (1) to gauge subglacial water volume and pressure changes, (2) to determine regional physical characteristics of subglacial water drainage system, and (3) to verify how sensitive is ice flow velocity to variability in subglacial drainage conditions.

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