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ICE STREAMS OF THE ANTARCTIC

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ICE STREAMS OF THE ANTARCTIC. The Antarctic Ice Sheets. The East Antarctic Ice Sheet Covers 1.0 x 10 7 km 2 Contains 2.6 x 10 7 km 3 of ice The West Antarctic Ice Sheet Covers 2.0 x 10 6 km 2 Contains 3.3 x 10 6 km 3 of ice. What is an Ice Stream?.

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the antarctic ice sheets
The Antarctic Ice Sheets
  • The East Antarctic Ice Sheet
    • Covers 1.0 x 107 km2
    • Contains 2.6 x 107 km3 of ice
  • The West Antarctic Ice Sheet
    • Covers 2.0 x 106 km2
    • Contains 3.3 x 106 km3 of ice
what is an ice stream
What is an Ice Stream?
  • Ice Streams are channels of rapidly moving ice within a ice sheet.
  • Ice Streams dynamics can have a significant effect on glacial stability
where are ice streams found in antarctica
Where are Ice Streams found in Antarctica?
  • There are Ice streams within each of the two major Ice Sheets of Antarctica
    • The East Antarctic Ice Sheet (EAIS)
    • The West Antarctic Ice Sheet (WAIS)
  • The most critical of these are streams are those that flow into the Ross Ice Shelf (RIS) and the Ronne-Filchner Ice Shelf (RFIS)
ice stream flow
Ice Stream Flow
  • The Antarctic ice streams flow at rates ranging from 100s to 1000s of meters per year
  • Stoppages and slow downs have been documented to occur rapidly
    • These variations in velocity significantly affect the mass balance of the RIS
ice stream controls
Ice Stream Controls
  • There are a number of factors that can affect ice stream flow rates
    • Melt Water Availability
    • Geothermal Heat Availability
    • Underlying Topography
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