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AIDJEX Beaufort Sea Upward Looking Sonar April 1976

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Entry ID

G02191

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.

Geographic Coverage

 

Spatial Coordinates:
N: 76°     S: 70°     E: -137°     W: -155°    

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

Temporal Coverage

Start Date: 1976-04-07
Stop Date: 1976-04-10

Location Keywords

  • OCEAN ARCTIC OCEAN BEAUFORT SEA

Science Keywords

  • Cryosphere Sea Ice Pack Ice
  • Oceans Sea Ice Pack Ice

Ancillary Keywords

  • AIDJEX
  • Arctic Ocean
  • Beaufort Sea
  • Ice Draft
  • Oceans
  • Sea Ice Draft
  • SONAR
  • Submarine Data
  • Upward Looking Sonar

ISO Topic Category (View Definitions)

  • Geoscientific Information

Platform

  • SUBMARINE

Instrument

  • SONAR Sound Navigation and Ranging
  • UPWARD LOOKING SONAR

Project

  • AIDJEX Arctic Ice Dynamics Joint Experiment

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.

Data Set Progress

complete

Originating Center

NOAA

Data Center

National Snow and Ice Data Center
Data Center URL: http://nsidc.org

Data Center Personnel

Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

National Oceanic and Atmospheric Administration
Data Center URL: http://nsidc.org/noaa/

Data Center Personnel

Name: NOAA User Services
Phone: 1 303 492-6199 x
Fax: 1 303 492-2468 x
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Distribution

Distribution Media: FTP
Distribution Size: 8 MB
Distribution Format: ASCII Text (.txt)

Personnel

Murray J Stateman
Role: INVESTIGATOR

NSIDC User Services
Role: TECHNICAL CONTACT
Phone: 1 303 492-6199 x
Fax: 1 303 492-2468 x
Email: nsidc@nsidc.org
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Related URL

VIEW PROJECT HOME PAGE
AIDJEX Home Page

VIEW PROJECT HOME PAGE
AIDJEX Home Page

VIEW RELATED INFORMATION
Submarine Upward Looking Sonar Ice Draft Profile Data and Statistics

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.

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2013-08-28
Last DIF Revision Date: 2013-08-28

Metadata Views

DIF Text-Only

Directory Interchange Format (DIF) in plain text

DIF XML

Directory Interchange Format (DIF) in Extensible Markup Language (XML)

FGDC HTML

U.S. Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM)

ISO HTML

International Organization for Standardization (ISO) 19115:2003 Geographic Information Metadata

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