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Summary
This data set consists of moored Upward Looking Sonar (ULS) data from
28 stations in the Weddell Sea. Parameters in the processed data files
are water pressure, water temperature, draft, and a flag to indicate
if the instrument is under ice. Raw data files contain additional
parameters. These data were contributed by the Alfred Wegener
Institute for Polar and Marine Research, Bremerhaven, Germany, in
1999. Data are available via ftp.

Related URL

Link: GET DATA Description: ftp access to data Link: VIEW RELATED INFORMATION Description: Access to documentation and data.

Geographic Coverage Spatial coordinates   

N: -59.0

S: -71.0

E: 0.0

W: -53.0

Data Set Citation

Dataset Creator: Harms, S., E. Fahrbach, and V. H. Strass Dataset Title: AWI Moored ULS Data, Weddell Sea (1990-1998) Dataset Release Date: 2001 Dataset Release Place: Boulder, CO U.S.A. Dataset Publisher: National Snow and Ice Data Center (NSIDC) Online Resource: http://nsidc.org/data/G01359.html

Temporal Coverage

Start Date: 1990-11-22 Stop Date: 1998-04-11

Location Keywords

CONTINENT > ANTARCTICA > Weddell Sea GEOGRAPHIC REGION > POLAR

Science Keywords

OCEANS > OCEAN PRESSURE > WATER PRESSURE OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE TERRESTRIAL HYDROSPHERE > SNOW/ICE > ICE DEPTH/THICKNESS OCEANS > SEA ICE > ICE DEPTH/THICKNESS CRYOSPHERE > SEA ICE > ICE DEPTH/THICKNESS

ISO Topic Category

OCEANS INLAND WATERS GEOSCIENTIFIC INFORMATION

Platform

FIELD SURVEYS FIXED OBSERVATION STATIONS BUOYS

Instrument

UPWARD LOOKING SONAR

Quality
After processing the raw data as described in the documentation that
accompanies the data set, and assuming Gaussian distribution of erros, the
total resulting error in ice draft measurements is about 4 cm (Strass, 1998).

Access Constraints
None.

Use Constraints
None.

Ancillary Keywords

Water temperature NSIDC > NATIONAL SNOW AND ICE DATA CENTER Water pressure Moored Upward Looking Sonar Upward Looking Sonar Sea ice draft Under-ice surface Moored Buoys

Data Set Progress

COMPLETE

Data Center

National Oceanic and Atmospheric Administration at the National Snow and Ice Data Center Data Center URL: http://nsidc.org/noaa/ Dataset ID: G01359 Data Center Personnel Name: NSIDC NOAA USER SERVICES Phone: +1 (303) 492-6199 Fax: +1 (303) 492-2468 Email: nsidc at 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 World Data Center for Glaciology, Boulder Data Center URL: http://nsidc.org/wdc/ Dataset ID: G01359 Data Center Personnel Name: NSIDC USER SERVICES Phone: +1 (303) 492-6199 Fax: +1 (303) 492-2468 Email: nsidc at 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 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 at 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 Format: ASCII text files Fees: none

Personnel

SABINE HARMS Role: INVESTIGATOR E. FAHRBACH Role: INVESTIGATOR NSIDC USER SERVICES Role: TECHNICAL CONTACT Phone: +1 (303) 492-6199 Fax: +1 (303) 492-2468 Email: nsidc at 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

Publications/References
Information on instruments:

Johannessen, A. A.. 1990. CMI ES-300 User's Guide.
Christian-Michelsen Institut, N-5036 Fantoft, Bergen Norway. 21 pp.

Johannessen, A. A.. 1995. CMI ES-300V User's Guide.
Christian-Michelsen Institut, N-5036 Fantoft, Bergen Norway. 19 pp.

Lothe, T. 1997. CMI ... ES-300VIII User's Guide. Christian-Michelsen
Institut, N-5036 Fantoft, Bergen Norway. 24 pp.

Information on data processing procedures: Strass,
V. H.. 1998. Measuring sea ice draft and coverage with moored Upward
Looking Sonars, Deep-Sea Res, I 45:795-818.

Results, moored ULS observations:

Strass, V. H., and E. Fahrbach. 1998. Temporal and regional variation
of sea ice draft and coverage in the Weddell Sea obtained from Upward
Looking Sonars, Antarctic Sea Ice: Physical Processes, Interactions
and Variability. Antarctic Res. Ser.74:123-139.

Harms, S. E. Fahrbach, and V.H. Strass. 2001. Sea ice transports in
the Weddell Sea, J. Geophys. Res., XX (in press).

Creation and Review Dates

DIF Creation Date: 2001-10-17 Last DIF Revision Date: 2009-01-08

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