Identification_Information:
   Dataset_Identifier: NSIDC-0500

   Citation: 
      Citation_Information: 
         Originator: J. MacGregor, K. Matsuoka, M. Studinger, E. Waddington, and D. Winebrenner
         Publication_Date: 20110801
         Title: Millennially Averaged Accumulation Rates for Lake Vostok
         Publication_Information: 
            Publication_Place: Boulder, Colorado USA
            Publisher: NSIDC: National Snow and Ice Data Center
         Online_Linkage: http://nsidc.org/data/nsidc-0500.html
         Online_Linkage: http://dx.doi.org/10.7265/N5F769HV

   Description: 
      Abstract:
         This data set consists of inferred accumulation rates from three radar layers 
         (26, 35 and 41 thousand years old) in the Vostok Subglacial Lake region. 
         Accumulation rates were inferred using Local-Layer Approximation (LLA), which 
         assumes that the strain-rate history of a particle traveling through the ice 
         sheet can be approximated by the vertical strain-rate profile at the current 
         position of the particle, which the researchers assume to be uniform. 
         Parameters include location, in latitude and longitude, polar stereographic 
         coordinates, and local grid X and Y coordinates, along with layer age, in 
         thousands of years (ka), and inferred accumulation rate (cm/a). The data cover 
         a 150 by 350 km area.

         Data are available via FTP, as a text file (.txt) with columns in comma 
         separated value format.

      Purpose: scientific research
      Documentation: 
         User's_Guide: 
            Citation_Information: 
               Originator: J. MacGregor, K. Matsuoka, M. Studinger, E. Waddington, and D. Winebrenner
               Publication_Date: 20110801
               Title: Millennially Averaged Accumulation Rates for Lake Vostok
               Publication_Information: 
                  Publication_Place: Boulder, Colorado USA
                  Publisher: NSIDC: National Snow and Ice Data Center
               Online_Linkage: http://nsidc.org/data/docs/agdc/nsidc0500_macgregor/index.html

   Time_Period_of_Content:
      Time_Period_Information:
         Range_of_Dates/Times:
            Beginning_Date: 20030929
            Ending_Date: 20120926
      Currentness_Reference: publication date

   Status:
      Progress: Complete
      Maintenance_and_Update_Frequency: Unknown

   Spatial_Domain:
      Bounding_Coordinates:
         West_Bounding_Coordinate: 68.4
         East_Bounding_Coordinate: 80.5
         North_Bounding_Coordinate: -75.7
         South_Bounding_Coordinate: -79.1

   Keywords:
      Theme:
         Theme_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Science Keywords
         Theme_Keyword: EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Ablation Zones/Accumulation Zones
         Theme_Keyword: EARTH SCIENCE > Cryosphere > Glaciers/Ice Sheets > Ice Sheets
         Theme_Keyword: EARTH SCIENCE > Cryosphere > Snow/Ice
         Theme_Keyword: EARTH SCIENCE > Spectral/Engineering > Radar
         Theme_Keyword: EARTH SCIENCE > Terrestrial Hydrosphere > Glaciers/Ice Sheets > Ablation Zones/Accumulation Zones
         Theme_Keyword: EARTH SCIENCE > Terrestrial Hydrosphere > Glaciers/Ice Sheets > Ice Sheets
         Theme_Keyword: EARTH SCIENCE > Terrestrial Hydrosphere > Snow/Ice
      Theme:
         Theme_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Project Keywords
         Theme_Keyword: SOAR > Support Office for Aerogeophysical Research
         Theme_Keyword: SOAR-LVS > Support Office for Aerogeophysical Research Lake Vostok Project
      Theme:
         Theme_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Instrument Keywords
         Theme_Keyword: RADAR > Radio Detection and Ranging
      Theme:
         Theme_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Platform Keywords
         Theme_Keyword: FIELD INVESTIGATION
      Theme:
         Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
         Theme_Keyword: climatologyMeteorologyAtmosphere
      Theme:
         Theme_Keyword_Thesaurus: None
         Theme_Keyword: Antarctic Ice Sheet
         Theme_Keyword: Ice Penetrating Radar
         Theme_Keyword: Ice Sheet
         Theme_Keyword: Lake Vostok
         Theme_Keyword: Radar
      Place:
         Place_Keyword_Thesaurus: NASA Global Change Master Directory (GCMD) Location Keywords
         Place_Keyword: Continent > Antarctica
         Place_Keyword: Geographic Region > Polar

   Access_Constraints: None

   Use_Constraints: None

   Point_of_Contact:
      Contact_Information:
         Contact_Person_Primary:
            Contact_Person: NSIDC User Services
            Contact_Organization: National Snow and Ice Data Center
         Contact_Address:
            Address_Type: mailing
            Address: CIRES, 449 UCB
            Address: University of Colorado
            City: Boulder
            State_or_Province: CO
            Postal_Code: 80309-0449
            Country: USA
         Contact_Voice_Telephone: 1 303 492-6199 x
         Contact_Facsimile_Telephone: 1 303  492-2468 x
         Contact_Electronic_Mail_Address: nsidc@nsidc.org

Distribution_Information:
   Distributor:
      Contact_Information:
         Contact_Organization_Primary:
            Contact_Organization: National Snow and Ice Data Center
            Contact_Person: NSIDC User Services
         Contact_Address:
            Address_Type: mailing
            Address: National Snow and Ice Data Center
            Address: CIRES, 449 UCB
            Address: University of Colorado
            City: Boulder
            State_or_Province: CO
            Postal_Code: 80309-0449
            Country: USA
         Contact_Voice_Telephone: 1 303 492-6199 
         Contact_Facsimile_Telephone: 1 303  492-2468 
         Contact_Electronic_Mail_Address: nsidc@nsidc.org

   Resource_Description: NSIDC-0500

   Distribution_Liability:
      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.

   Standard_Order_Process:
      Digital_Form:
         Digital_Transfer_Information:
            Format_Name: ASCII Text (.txt)
         Digital_Transfer_Option:
            Online_Option:
               Computer_Contact_Information:
                  Network_Address:
                     Network_Resource_Name: ftp://sidads.colorado.edu/pub/DATASETS/AGDC/nsidc0500_macgregor_V01/
      Fees: None

Metadata_Reference_Information:
   Metadata_Date: 20130320

   Metadata_Review_Date: 20130320

   Metadata_Contact: 
      Contact_Information:
         Contact_Person_Primary:
            Contact_Person: NSIDC User Services
            Contact_Organization: National Snow and Ice Data Center
         Contact_Address:
            Address_Type: mailing
            Address: National Snow and Ice Data Center
            Address: CIRES, 449 UCB
            Address: University of Colorado
            City: Boulder
            State_or_Province: CO
            Postal_Code: 80309-0449
            Country: USA
         Contact_Voice_Telephone: 1 303 492-6199 
         Contact_Facsimile_Telephone: 1 303  492-2468 
         Contact_Electronic_Mail_Address: nsidc@nsidc.org

   Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadata

   Metadata_Standard_Version: FGDC-STD-012-2002