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<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>G01360</Entry_ID>
  <Entry_Title>Submarine Upward Looking Sonar Ice Draft Profile Data and Statistics</Entry_Title>
  <Data_Set_Citation>
    <Dataset_Creator>NSIDC, . </Dataset_Creator>
    <Dataset_Title>Submarine Upward Looking Sonar Ice Draft Profile Data and Statistics</Dataset_Title>
    <Dataset_Release_Date>1998-01-01updated 2006</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/g01360.html</Online_Resource>
    <Dataset_DOI>http://dx.doi.org/10.7265/N54Q7RWK</Dataset_DOI>
  </Data_Set_Citation>
  <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>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>W.</First_Name>
    <Middle_Name>B.</Middle_Name>
    <Last_Name>Tucker III</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>S.</First_Name>
    <Middle_Name>F.</Middle_Name>
    <Last_Name>Ackley</Last_Name>
    <Email>sackley@pol.ne</Email>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>D.</First_Name>
    <Last_Name>Eppler</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>D.</First_Name>
    <Last_Name>Farmer</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>N.</First_Name>
    <Middle_Name>R.</Middle_Name>
    <Last_Name>Davis</Last_Name>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>P.</First_Name>
    <Last_Name>Wadhams</Last_Name>
    <Email>pw11@cam.ac.uk</Email>
    <Contact_Address>
      <Address>University of Cambridge</Address>
      <Address>Department of Applied Mathematics and Theoretical Physics</Address>
    </Contact_Address>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>Y.</First_Name>
    <Last_Name>Yu</Last_Name>
    <Email>yanling@apl.washington.edu</Email>
    <Contact_Address>
      <Address>University of Washington</Address>
    </Contact_Address>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>M.</First_Name>
    <Last_Name>Wensnahan</Last_Name>
    <Email>thinice@apl.washington.edu</Email>
    <Contact_Address>
      <Address>University of Washington</Address>
    </Contact_Address>
  </Personnel>
  <Personnel>
    <Role>Investigator</Role>
    <First_Name>D.</First_Name>
    <Middle_Name>A.</Middle_Name>
    <Last_Name>Rothrock</Last_Name>
    <Email>rothrock@apl.washington.edu</Email>
    <Contact_Address>
      <Address>University of Washington</Address>
    </Contact_Address>
  </Personnel>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Cryosphere</Topic>
    <Term>Sea Ice</Term>
    <Variable_Level_1>Ice Deformation</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Cryosphere</Topic>
    <Term>Sea Ice</Term>
    <Variable_Level_1>Ice Depth/Thickness</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Cryosphere</Topic>
    <Term>Sea Ice</Term>
    <Variable_Level_1>Ice Roughness</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Cryosphere</Topic>
    <Term>Sea Ice</Term>
    <Variable_Level_1>Leads</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Oceans</Topic>
    <Term>Sea Ice</Term>
    <Variable_Level_1>Ice Deformation</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Oceans</Topic>
    <Term>Sea Ice</Term>
    <Variable_Level_1>Ice Depth/Thickness</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Oceans</Topic>
    <Term>Sea Ice</Term>
    <Variable_Level_1>Ice Roughness</Variable_Level_1>
  </Parameters>
  <Parameters>
    <Category>EARTH SCIENCE</Category>
    <Topic>Oceans</Topic>
    <Term>Sea Ice</Term>
    <Variable_Level_1>Leads</Variable_Level_1>
  </Parameters>
  <ISO_Topic_Category>Climatology/Meteorology/Atmosphere</ISO_Topic_Category>
  <ISO_Topic_Category>Oceans</ISO_Topic_Category>
  <Keyword>Declassified Naval Submarine Data</Keyword>
  <Keyword>Ice Draft</Keyword>
  <Keyword>Submarine Data</Keyword>
  <Keyword>Upward Looking Sonar</Keyword>
  <Sensor_Name>
    <Short_Name>SONAR</Short_Name>
    <Long_Name>Sound Navigation and Ranging</Long_Name>
  </Sensor_Name>
  <Sensor_Name>
    <Short_Name>UPWARD LOOKING SONAR</Short_Name>
  </Sensor_Name>
  <Source_Name>
    <Short_Name>SUBMARINE</Short_Name>
  </Source_Name>
  <Data_Set_Progress>in work</Data_Set_Progress>
  <Location>
    <Location_Category>OCEAN</Location_Category>
    <Location_Type>ARCTIC OCEAN</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_NOAA</Short_Name>
      <Long_Name>NSIDC National Oceanic and Atmospheric Administration</Long_Name>
    </Data_Center_Name>
    <Data_Center_URL>http://nsidc.org/noaa/</Data_Center_URL>
    <Personnel>
      <Role>Data Center Contact</Role>
      <First_Name>NSIDC NOAA</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>
  <Summary>This data set consists of upward looking sonar draft data collected by submarines in the Arctic Ocean.  It includes data from both U.S. Navy and Royal Navy submarines. Maps showing submarine tracks are  available.  Data are provided as ice draft profiles and as statistics derived from the profile data. Statistics files include information concerning ice draft characteristics, keels, level ice, leads, un- deformed and deformed ice.  Data from the U.S. Navy's Digital Ice Profiling System (DIPS) have been  interpolated and processed for release as unclassified data at the U.S. Army's Cold Regions Research  and Engineering Laboratory (CRREL) in Hanover, New Hampshire. Data from the analog draft recording  system were digitized and then processed by the Polar Science Center, Applied Physics Laboratory,  University of Washington.   Data from British submarines were provided by the Scott Polar Research  Institute, University of Cambridge. All data sources used similar processing methods in order to ensure  a consistent data set. 

Access to the Submarine Upward Looking Sonar Ice Draft Profile Data and Statistics data set is  unrestricted, but users are encouraged to register for the data. Registered users will receive e-mail notification about any product changes.</Summary>
  <Related_URL>
    <URL_Content_Type>
      <Type>VIEW PROJECT HOME PAGE</Type>
    </URL_Content_Type>
    <URL>http://nsidc.org/data/seaice/</URL>
    <Description>Sea Ice Products at NSIDC</Description>
  </Related_URL>
  <IDN_Node>
    <Short_Name>USA/NOAA</Short_Name>
  </IDN_Node>
  <Metadata_Name>CEOS IDN DIF</Metadata_Name>
  <Metadata_Version>9.7</Metadata_Version>
  <DIF_Creation_Date>1998-01-01</DIF_Creation_Date>
  <Last_DIF_Revision_Date>2013-03-07</Last_DIF_Revision_Date>
  <DIF_Revision_History> Added DOI</DIF_Revision_History>
</DIF>
