<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<DIF xmlns="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/ http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/dif_v9.7.1.xsd">
  <Entry_ID>NSIDC-0106</Entry_ID>
  <Entry_Title>Ice Velocity Data from Ice Stream C, West Antarctica</Entry_Title>
  <Data_Set_Citation>
    <Dataset_Creator>Sridhar Anandakrishnan</Dataset_Creator>
    <Dataset_Title>Ice Velocity Data from Ice Stream C, West Antarctica</Dataset_Title>
    <Dataset_Release_Date>2001-12-01</Dataset_Release_Date>
    <Dataset_Release_Place>Boulder, Colorado USA</Dataset_Release_Place>
    <Dataset_Publisher>NSIDC: National Snow and Ice Data Center</Dataset_Publisher>
    <Online_Resource>http://nsidc.org/data/nsidc-0106.html</Online_Resource>
    <Dataset_DOI>http://dx.doi.org/10.7265/N5CZ3539</Dataset_DOI>
  </Data_Set_Citation>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>Sridhar</First_Name>
    <Last_Name>Anandakrishnan</Last_Name>
    <Contact_Address>
      <Address>Pennsylvania State University</Address>
      <Address>Department of Geosciences</Address>
      <Address>442 Deike Building</Address>
      <City>University Park</City>
      <Province_or_State>PA</Province_or_State>
      <Postal_Code>16802</Postal_Code>
      <Country>USA</Country>
    </Contact_Address>
  </Personnel>
  <Personnel>
    <Role>Technical Contact</Role>
    <First_Name>NSIDC</First_Name>
    <Last_Name>User Services</Last_Name>
    <Email>nsidc@nsidc.org</Email>
    <Phone>1 303 492-6199 x</Phone>
    <Fax>1 303  492-2468 x</Fax>
    <Contact_Address>
      <Address>National Snow and Ice Data Center</Address>
      <Address>CIRES, 449 UCB</Address>
      <Address>University of Colorado</Address>
      <City>Boulder</City>
      <Province_or_State>CO</Province_or_State>
      <Postal_Code>80309-0449</Postal_Code>
      <Country>USA</Country>
    </Contact_Address>
  </Personnel>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Cryosphere</Topic>
    <Term>Glaciers/Ice Sheets</Term>
    <Variable_Level_1>Glacier Motion/Ice Sheet Motion</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Cryosphere</Topic>
    <Term>Glaciers/Ice Sheets</Term>
    <Variable_Level_1>Ice Sheets</Variable_Level_1>
    <Detailed_Variable>Ice Stream</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Cryosphere</Topic>
    <Term>Snow/Ice</Term>
    <Variable_Level_1>Ice Motion</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Cryosphere</Topic>
    <Term>Snow/Ice</Term>
    <Variable_Level_1>Ice Velocity</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Terrestrial Hydrosphere</Topic>
    <Term>Glaciers/Ice Sheets</Term>
    <Variable_Level_1>Glacier Motion/Ice Sheet Motion</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Terrestrial Hydrosphere</Topic>
    <Term>Glaciers/Ice Sheets</Term>
    <Variable_Level_1>Ice Sheets</Variable_Level_1>
    <Detailed_Variable>Ice Stream</Detailed_Variable>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Terrestrial Hydrosphere</Topic>
    <Term>Snow/Ice</Term>
    <Variable_Level_1>Ice Motion</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Terrestrial Hydrosphere</Topic>
    <Term>Snow/Ice</Term>
    <Variable_Level_1>Ice Velocity</Variable_Level_1>
  </Parameters>
  <Keyword>AGDC</Keyword>
  <Keyword>Antarctica</Keyword>
  <Keyword>Glaciology</Keyword>
  <Keyword>Global Positioning Systems</Keyword>
  <Keyword>GPS</Keyword>
  <Keyword>ice sheets</Keyword>
  <Keyword>Ice Stream C Velocities</Keyword>
  <Keyword>ICE STREAMS</Keyword>
  <Keyword>ice velocities</Keyword>
  <Keyword>NSIDC</Keyword>
  <Keyword>NSIDC-0106</Keyword>
  <Keyword>Velocity Measurements</Keyword>
  <Keyword>WAIS</Keyword>
  <Keyword>West Antarctic Ice Sheet</Keyword>
  <Sensor_Name>
    <Short_Name>GPS</Short_Name>
    <Long_Name>Global Positioning System</Long_Name>
  </Sensor_Name>
  <Sensor_Name>
    <Short_Name>GPS RECEIVERS</Short_Name>
  </Sensor_Name>
  <Source_Name>
    <Short_Name>GROUND-BASED OBSERVATIONS</Short_Name>
  </Source_Name>
  <Temporal_Coverage>
    <Start_Date>1995-11-01</Start_Date>
    <Stop_Date>1996-01-31</Stop_Date>
  </Temporal_Coverage>
  <Data_Set_Progress>complete</Data_Set_Progress>
  <Spatial_Coverage>
    <Southernmost_Latitude>-82.8113</Southernmost_Latitude>
    <Northernmost_Latitude>-81.8039</Northernmost_Latitude>
    <Westernmost_Longitude>-152.598</Westernmost_Longitude>
    <Easternmost_Longitude>-124.987</Easternmost_Longitude>
  </Spatial_Coverage>
  <Spatial_Coverage>
    <Southernmost_Latitude>-82.362</Southernmost_Latitude>
    <Northernmost_Latitude>-82.2764</Northernmost_Latitude>
    <Westernmost_Longitude>-121.644</Westernmost_Longitude>
    <Easternmost_Longitude>-120.018</Easternmost_Longitude>
  </Spatial_Coverage>
  <Location>
    <Location_Category>CONTINENT</Location_Category>
    <Location_Type>ANTARCTICA</Location_Type>
  </Location>
  <Data_Set_Language>English</Data_Set_Language>
  <Data_Center>
    <Data_Center_Name>
      <Short_Name>NSIDC</Short_Name>
      <Long_Name>National Snow and Ice Data Center</Long_Name>
    </Data_Center_Name>
    <Data_Center_URL>http://nsidc.org</Data_Center_URL>
    <Personnel>
      <Role>Data Center Contact</Role>
      <First_Name>NSIDC</First_Name>
      <Last_Name>User Services</Last_Name>
      <Email>nsidc@nsidc.org</Email>
      <Phone>1 303 492-6199 </Phone>
      <Fax>1 303  492-2468 </Fax>
      <Contact_Address>
        <Address>National Snow and Ice Data Center</Address>
        <Address>CIRES, 449 UCB</Address>
        <Address>University of Colorado</Address>
        <City>Boulder</City>
        <Province_or_State>CO</Province_or_State>
        <Postal_Code>80309-0449</Postal_Code>
        <Country>USA</Country>
      </Contact_Address>
    </Personnel>
  </Data_Center>
  <Data_Center>
    <Data_Center_Name>
      <Short_Name>NSIDC_AGDC</Short_Name>
      <Long_Name>NSIDC Antarctic Glaciological Data Center</Long_Name>
    </Data_Center_Name>
    <Data_Center_URL>http://nsidc.org/agdc/</Data_Center_URL>
    <Personnel>
      <Role>Data Center Contact</Role>
      <First_Name>NSIDC AGDC</First_Name>
      <Last_Name>User Services</Last_Name>
      <Email>nsidc@nsidc.org</Email>
      <Phone>1 303 492-6199 </Phone>
      <Fax>1 303  492-2468 </Fax>
      <Contact_Address>
        <Address>National Snow and Ice Data Center</Address>
        <Address>CIRES, 449 UCB</Address>
        <Address>University of Colorado</Address>
        <City>Boulder</City>
        <Province_or_State>CO</Province_or_State>
        <Postal_Code>80309-0449</Postal_Code>
        <Country>USA</Country>
      </Contact_Address>
    </Personnel>
  </Data_Center>
  <Data_Center>
    <Data_Center_Name>
      <Short_Name>NSIDC_USADCC</Short_Name>
      <Long_Name>NSIDC U.S. Antarctic Data Coordination Center</Long_Name>
    </Data_Center_Name>
    <Data_Center_URL>http://nsidc.org/usadcc/</Data_Center_URL>
    <Personnel>
      <Role>Data Center Contact</Role>
      <First_Name>NSIDC USADCC</First_Name>
      <Last_Name>User Services</Last_Name>
      <Email>nsidc@nsidc.org</Email>
      <Phone>1 303 492-6199 </Phone>
      <Fax>1 303  492-2468 </Fax>
      <Contact_Address>
        <Address>National Snow and Ice Data Center</Address>
        <Address>CIRES, 449 UCB</Address>
        <Address>University of Colorado</Address>
        <City>Boulder</City>
        <Province_or_State>CO</Province_or_State>
        <Postal_Code>80309-0449</Postal_Code>
        <Country>USA</Country>
      </Contact_Address>
    </Personnel>
  </Data_Center>
  <Distribution>
    <Distribution_Media>FTP</Distribution_Media>
    <Distribution_Size>15 KB</Distribution_Size>
    <Distribution_Format>Microsoft Excel</Distribution_Format>
  </Distribution>
  <Distribution>
    <Distribution_Media>FTP</Distribution_Media>
    <Distribution_Size>17 KB</Distribution_Size>
    <Distribution_Format>Microsoft Excel</Distribution_Format>
  </Distribution>
  <Distribution>
    <Distribution_Media>FTP</Distribution_Media>
    <Distribution_Size>3 KB</Distribution_Size>
    <Distribution_Format>ASCII Text</Distribution_Format>
  </Distribution>
  <Distribution>
    <Distribution_Media>FTP</Distribution_Media>
    <Distribution_Size>2 KB</Distribution_Size>
    <Distribution_Format>ASCII Text</Distribution_Format>
  </Distribution>
  <Multimedia_Sample>
    <File>http://nsidc.org/data/docs/agdc/nsidc0106_anandakrishnan/images/nsidc0106_locator.jpg</File>
    <Caption>Sample Location Map</Caption>
  </Multimedia_Sample>
  <Reference>Anandakrishnan, S. and R. B. Alley. 1997. Stagnation of ice stream C, West Antarctica by water piracy. Geophys. Res. Lett. 24: 265-268.

Anandakrishnan, S., D. D. Blankenship, R. B. Alley, and P. A. Stoffa. 1998. Influence of subglacial geology on the position of a West Antarctic ice stream from seismic observations. Nature 394: 62-65.</Reference>
  <Summary>Ice velocity data from ice stream C, including the body of the ice stream and its area of onset, are available.  The investigator calculated velocities from precise ice displacement measurements made with a geodetic-quality Global Positioning System (GPS). These ice displacement measurements accompanied seismic experiments aimed at understanding controls on the flow of ice streams in west Antarctica. An understanding of ice stream flow is essential to predicting the response of the West Antarctic Ice Sheet to future climate change.

Data are available in ASCII format via ftp.</Summary>
  <Metadata_Name>CEOS IDN DIF</Metadata_Name>
  <Metadata_Version>9.7</Metadata_Version>
  <DIF_Creation_Date>2001-12-01</DIF_Creation_Date>
  <Last_DIF_Revision_Date>2013-03-13</Last_DIF_Revision_Date>
  <DIF_Revision_History> Added DOI</DIF_Revision_History>
</DIF>
