<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<metadata>
  <idinfo>
    <datsetid>NSIDC-0517</datsetid>
    <citation>
      <citeinfo>
        <origin>Blankenship, D., and D. Young</origin>
        <pubdate>20120503</pubdate>
        <title>AGASEA Ice Thickness Profile Data from the Amundsen Sea Embayment, Antarctica</title>
        <pubinfo>
          <pubplace>Boulder, Colorado USA</pubplace>
          <publish>NSIDC: National Snow and Ice Data Center</publish>
        </pubinfo>
        <onlink>http://nsidc.org/data/nsidc-0517.html</onlink>
        <onlink>http://dx.doi.org/10.7265/N5W95730</onlink>
      </citeinfo>
    </citation>
    <descript>
      <abstract>This data set contains line-based radar-derived ice thickness and bed elevation data, collected as part of the Airborne Geophysical Survey of the Amundsen Embayment (AGASEA) expedition, which took place over Thwaites Glacier in West Antarctica from 2004 to 2005. The data set includes ice thickness, ice sheet bed elevation, and ice sheet surface elevation, derived from ice-penetrating radar and aircraft GPS positions. The data are spaced on a 15 km by 15 km grid over the entire catchment of the glacier, and sampled at approximately 15 meters along track. Most of the radar data used for this dataset has been processed using a 1-D focusing algorithm, to reduce the along track resolution to tens of meters, to improve boundary conditions for ice sheet models. 

Data are available via FTP in space-delimited ASCII format.</abstract>
      <purpose>scientific research</purpose>
      <documnts>
        <userguid>
          <citeinfo>
            <origin>Blankenship, D., and D. Young</origin>
            <pubdate>20120503</pubdate>
            <title>AGASEA Ice Thickness Profile Data from the Amundsen Sea Embayment, Antarctica</title>
            <pubinfo>
              <pubplace>Boulder, Colorado USA</pubplace>
              <publish>NSIDC: National Snow and Ice Data Center</publish>
            </pubinfo>
            <onlink>http://nsidc.org/data/docs/agdc/nsidc0517-blankenship/index.html</onlink>
          </citeinfo>
        </userguid>
      </documnts>
    </descript>
    <timeperd>
      <timeinfo>
        <rngdates>
          <begdate>20041210</begdate>
          <enddate>20050129</enddate>
        </rngdates>
      </timeinfo>
      <current>publication date</current>
    </timeperd>
    <status>
      <progress>Complete</progress>
      <update>Unknown</update>
    </status>
    <spdom>
      <bounding>
        <westbc>-125</westbc>
        <eastbc>-90</eastbc>
        <northbc>-73</northbc>
        <southbc>-83</southbc>
      </bounding>
    </spdom>
    <keywords>
      <theme>
        <themekt>NASA Global Change Master Directory (GCMD) Science Keywords</themekt>
        <themekey>EARTH SCIENCE &gt; Cryosphere &gt; Glaciers/Ice Sheets &gt; Glacier Elevation/Ice Sheet Elevation</themekey>
        <themekey>EARTH SCIENCE &gt; Cryosphere &gt; Glaciers/Ice Sheets &gt; Glacier Topography/Ice Sheet Topography</themekey>
        <themekey>EARTH SCIENCE &gt; Cryosphere &gt; Glaciers/Ice Sheets &gt; Ice Sheets</themekey>
      </theme>
      <theme>
        <themekt>None</themekt>
        <themekey/>
      </theme>
      <theme>
        <themekt>NASA Global Change Master Directory (GCMD) Instrument Keywords</themekt>
        <themekey>GPS &gt; Global Positioning System</themekey>
        <themekey>RADAR &gt; Radio Detection and Ranging</themekey>
      </theme>
      <theme>
        <themekt>NASA Global Change Master Directory (GCMD) Platform Keywords</themekt>
        <themekey>AIRCRAFT</themekey>
        <themekey>DHC-6 &gt; DeHavilland Twin Otter</themekey>
      </theme>
      <theme>
        <themekt>ISO 19115 Topic Categories</themekt>
        <themekey>climatologyMeteorologyAtmosphere</themekey>
      </theme>
      <theme>
        <themekt>None</themekt>
        <themekey>Airborne geophysical survey of the Amundsen Sea Embayment, Antarctica (AGASEA)</themekey>
        <themekey>Airborne Radar Sounding</themekey>
        <themekey>Antarctic Ice Sheet</themekey>
        <themekey>Glacier</themekey>
        <themekey>glaciers</themekey>
        <themekey>GPS</themekey>
        <themekey>Ice Penetrating Radar</themekey>
        <themekey>Ice Sheet</themekey>
        <themekey>Ice Sheet Thickness</themekey>
        <themekey>Model Input Data</themekey>
        <themekey>Thwaites Glacier</themekey>
      </theme>
      <place>
        <placekt>NASA Global Change Master Directory (GCMD) Location Keywords</placekt>
        <placekey>Continent &gt; Antarctica</placekey>
        <placekey>Geographic Region &gt; Polar</placekey>
      </place>
    </keywords>
    <thelayid>
      <numthlay>3</numthlay>
      <layrname>
        <theme>
          <themekt>NASA Global Change Master Directory (GCMD) Science Keywords</themekt>
          <themekey>EARTH SCIENCE &gt; Cryosphere &gt; Glaciers/Ice Sheets &gt; Glacier Elevation/Ice Sheet Elevation</themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>NASA Global Change Master Directory (GCMD) Science Keywords</themekt>
          <themekey>EARTH SCIENCE &gt; Cryosphere &gt; Glaciers/Ice Sheets &gt; Glacier Topography/Ice Sheet Topography</themekey>
        </theme>
      </layrname>
      <layrname>
        <theme>
          <themekt>NASA Global Change Master Directory (GCMD) Science Keywords</themekt>
          <themekey>EARTH SCIENCE &gt; Cryosphere &gt; Glaciers/Ice Sheets &gt; Ice Sheets</themekey>
        </theme>
      </layrname>
    </thelayid>
    <accconst>None</accconst>
    <useconst>None</useconst>
    <ptcontac>
      <cntinfo>
        <cntperp>
          <cntper>NSIDC User Services</cntper>
          <cntorg>National Snow and Ice Data Center</cntorg>
        </cntperp>
        <cntaddr>
          <addrtype>mailing</addrtype>
          <address>CIRES, 449 UCB</address>
          <address>University of Colorado</address>
          <city>Boulder</city>
          <state>CO</state>
          <postal>80309-0449</postal>
          <country>USA</country>
        </cntaddr>
        <cntvoice>1 303 492-6199 x</cntvoice>
        <cntfax>1 303  492-2468 x</cntfax>
        <cntemail>nsidc@nsidc.org</cntemail>
      </cntinfo>
    </ptcontac>
  </idinfo>
  <distinfo>
    <distrib>
      <cntinfo>
        <cntorgp>
          <cntorg>National Snow and Ice Data Center</cntorg>
          <cntper>NSIDC User Services</cntper>
        </cntorgp>
        <cntaddr>
          <addrtype>mailing</addrtype>
          <address>National Snow and Ice Data Center</address>
          <address>CIRES, 449 UCB</address>
          <address>University of Colorado</address>
          <city>Boulder</city>
          <state>CO</state>
          <postal>80309-0449</postal>
          <country>USA</country>
        </cntaddr>
        <cntvoice>1 303 492-6199 </cntvoice>
        <cntfax>1 303  492-2468 </cntfax>
        <cntemail>nsidc@nsidc.org</cntemail>
      </cntinfo>
    </distrib>
    <resdesc>NSIDC-0517</resdesc>
    <distliab>NSIDC cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NSIDC makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.</distliab>
    <stdorder>
      <digform>
        <digtinfo>
          <formname>ASCII Text</formname>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>ftp://sidads.colorado.edu/pub/DATASETS/AGDC/nsidc0517_blankenship_V01/</networkr>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
      <fees>None</fees>
    </stdorder>
  </distinfo>
  <metainfo>
    <metd>20130320</metd>
    <metrd>20130320</metrd>
    <metc>
      <cntinfo>
        <cntperp>
          <cntper>NSIDC User Services</cntper>
          <cntorg>National Snow and Ice Data Center</cntorg>
        </cntperp>
        <cntaddr>
          <addrtype>mailing</addrtype>
          <address>National Snow and Ice Data Center</address>
          <address>CIRES, 449 UCB</address>
          <address>University of Colorado</address>
          <city>Boulder</city>
          <state>CO</state>
          <postal>80309-0449</postal>
          <country>USA</country>
        </cntaddr>
        <cntvoice>1 303 492-6199 </cntvoice>
        <cntfax>1 303  492-2468 </cntfax>
        <cntemail>nsidc@nsidc.org</cntemail>
      </cntinfo>
    </metc>
    <metstdn>FGDC Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata</metstdn>
    <metstdv>FGDC-STD-012-2002</metstdv>
  </metainfo>
</metadata>
