Entry_ID: G02191
Entry_Title: AIDJEX Beaufort Sea Upward Looking Sonar April 1976
Group: Data_Set_Citation
   Dataset_Creator: Stateman, M. J. 
   Dataset_Title: AIDJEX Beaufort Sea Upward Looking Sonar April 1976
   Dataset_Release_Date: 2013-08-28
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NSIDC: National Snow and Ice Data Center
   Online_Resource: http://nsidc.org/data/g02191.html
   Dataset DOI: http://dx.doi.org/10.7265/N5X63JV3
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Murray
   Middle_Name: J
   Last_Name: Stateman
End_Group
Group: Personnel
   Role: Technical Contact
   First_Name: NSIDC
   Last_Name: User Services
   Email: nsidc@nsidc.org
   Phone: 1 303 492-6199 x
   Fax: 1 303  492-2468 x
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: CIRES, 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309-0449
      Country: USA
   End_Group
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Sea Ice
   Variable_Level_1: Pack Ice
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Oceans
   Term: Sea Ice
   Variable_Level_1: Pack Ice
End_Group
ISO_Topic_Category: Geoscientific Information
Keyword: AIDJEX
Keyword: Arctic Ocean
Keyword: Beaufort Sea
Keyword: Ice Draft
Keyword: Oceans
Keyword: Sea Ice Draft
Keyword: SONAR
Keyword: Submarine Data
Keyword: Upward Looking Sonar
Sensor_Name: SONAR > Sound Navigation and Ranging
Sensor_Name: UPWARD LOOKING SONAR
Source_Name: SUBMARINE
Group: Temporal_Coverage
   Start_Date: 1976-04-07
   Stop_Date: 1976-04-10
End_Group
Data_Set_Progress: complete
Group: Spatial_Coverage
   Southernmost_Latitude: 70
   Northernmost_Latitude: 76
   Westernmost_Longitude: -155
   Easternmost_Longitude: -137
End_Group
Group: Location
   Location_Category: OCEAN
   Location_Type: ARCTIC OCEAN
   Location_Subregion1: BEAUFORT SEA
End_Group
Project: AIDJEX > Arctic Ice Dynamics Joint Experiment
Group: Quality

   This data set has not been quality checked and the format and contents of the 
   file are somewhat ambiguous. Please use caution when worknig with the data.

End_Group
Data_Set_Language: English
Originating_Center: NOAA
Group: Data_Center
   Data_Center_Name: NSIDC > National Snow and Ice Data Center
   Data_Center_URL: http://nsidc.org
   Group: Personnel
      Role: Data Center Contact
      First_Name: NSIDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 
      Fax: 1 303  492-2468 
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Data_Center
   Data_Center_Name: NOAA > National Oceanic and Atmospheric Administration
   Data_Center_URL: http://nsidc.org/noaa/
   Group: Personnel
      Role: Data Center Contact
      First_Name: NOAA
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 x
      Fax: 1 303  492-2468 x
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 8 MB
   Distribution_Format: ASCII Text (.txt)
End_Group
Group: Reference

   Wadhams, P., and Horne, R.J. 1980.  An Analysis of Ice Profiles Obtained by 
   Submarine Sonar in the Beaufort Sea. Journal of Glaciology 25(93): 401-424. 

    Wadhams, P., and R. J. Horne. 1978. An analysis of ice profiles obtained by 
   submarine sonar in the AIDJEX area of the Beafort Sea. Scott Polar Research 
   Institute Technical Report 78-1. Cambridge: SPRI.

End_Group
Group: Summary

   This data contains Upward Looking Sonar (ULS) profiles of the underside of the 
   Arctic pack ice along three transects whose total length is 777 nautical 
   miles. The data were obtained by the USS Gurnard (SSN-662), a U.S. Navy 
   submarine, on a traverse of the AIDJEX Main Experiment area in the Beaufort 
   Sea from 07 April 1976 to 10 April 1976. The sea ice thickness derived from 
   the ULS is given in feet.

   The data are in a single ASCII text file: Aidjex_04_1976_uls.txt. The data in 
   this text file are not formatted into columns; all data are presented in one 
   long row separated by spaces. Little is known about the format of the file, so 
   caution should be used when working with the data. NSIDC is providing this 
   data as part of our effort to preserve historical data.  The data file begins 
   with nine values that appear to be header information. These nine values 
   include latitude and longitude values along with other unknown values. After 
   the header, there are approximately 2100 measurements of what NSIDC believes 
   is sea ice thickness in feet, however it is unclear how often these 
   measurements were taken. After these 2100 values, another header of nine 
   values occurs followed again by 2100 measurements. The file continues in this 
   pattern through the remainder of the file. Users with information about the 
   contents of the file are encouraged to contact NSIDC User Services.

   Two supporting documents that provide some background have been scanned and 
   included as PDF files. These are AIDJEX_ULS_background.pdf and 
   AIDJEX_ULS_format.pdf. 

   These data are available via FTP. 

   Note: These data are in a raw format with unknown fields and 
   are being provided as is for preservation purposes. A processed version of the 
   data are available in the Submarine Upward Looking 
   Sonar Ice Draft Profile Data and Statistics data set.

End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://nsidc.org/noaa/aidjex/
   Description: AIDJEX Home Page
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW PROJECT HOME PAGE
   End_Group
   URL: http://nsidc.org/noaa/aidjex/index.html
   Description: AIDJEX Home Page
End_Group
Group: Related_URL
   Group: URL_Content_Type
      Type: VIEW RELATED INFORMATION
   End_Group
   URL: http://nsidc.org/data/g01360.html
   Description: Submarine Upward Looking Sonar Ice Draft Profile Data and Statistics
End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2013-08-28
Last_DIF_Revision_Date: 2013-08-28
DIF_Revision_History:  Added a major version number and a DOI. No QC needed.