RAMP AMM-1 SAR Image Mosaic of Antarctica
Entry ID:
NSIDC-0103
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Summary
Abstract:
In 1997, the Canadian RADARSAT-1 satellite was rotated in orbit, so that its synthetic aperture radar (SAR) antenna looked south towards Antarctica. This permitted the first high-resolution mapping of the entire continent of Antarctica. In eighteen days, the satellite acquired a complete coverage of radar image swaths as part of the first Antarctic Mapping Mission (AMM-1). Swath images have been ... assembled into an image mosaic depicting the entire continent at 25-m resolution. The mosaic provides a detailed look at ice sheet morphology, rock outcrops, research infrastructure, the coastline, and other features of Antarctica, as well as representing calibrated radar backscatter data which may provide insight into climate processes affecting the upper few meters of snow cover. Data are available from both the Alaska Satellite Facility (ASF) and the National Snow and Ice Data Center (NSIDC), and are offered in a variety of formats. A series of approximately 90 image tiles covers the entire continent at 25-m resolution, and single mosaic images derived from these tiles cover the continent at resolutions ranging from 125 m to 1 km. The single images provide good detail in convenient image formats. The tile products preserve the highest resolution of spatial detail, and retain the quantitative measure of backscatter intensity, but are necessarily large files that require assembly by the user. 
Related URL
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Description:
Access these data as map images using the Open Geospatial Consortium (OGC) Web Map Service (WMS).
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Geographic Coverage
(Click for Interactive Map)
Spatial coordinates
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N: -60.0
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S: -90.0
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E: 180.0
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W: -180.0
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Data Set Citation
Dataset Originator/Creator:
Kenneth C. Jezek, John C. Curlander, Frank Carsey, Carl Wales, and Roger Barry
Dataset Release Date:
2002-01-01
Dataset Release Place:
Boulder, CO USA
Dataset Publisher:
National Snow and Ice Data Center (NSIDC)
Data Presentation Form:
Images
Online Resource:
http://nsidc.org/data/nsidc-0103.html
Temporal Coverage
Start Date:
1997-09-01
Stop Date:
1997-10-31
Quality
The Dates provided in temporal coverage are approximate only, and represent the beginning and end of the 2007 - 2009 Antarctic seasons. The latitudes and longitudes provided in spatial coverage are approximate only.
2007/2008 Season
The original work plan requested 48 days of on-site ship time and included sampling both pelagic and benthic ... environments from the Aurora Australis. It soon became evident that there was insufficient ship time to adequately support all the major marine science projects in the 2007/08 season, i.e. the SIPEX sea ice survey PN2901 and PN2767, CASO PN2973 and CEAMARC PN2792. Both CASO and CEAMARC required the same sampling period of January and February for optimal success. The Tokyo University of Marine Science and Technology was invited to collaborate on CEAMARC with their vessel Umitaka Maru. Umitaka Maru conducted the sampling of plankton and fish in the pelagic and mesopelagic zones over 15 days in the survey area. Aurora Australis conducted the sampling for demersal fish and benthic organisms with 20 days allocated on site. Astrolabe joined the project providing an additional 10 days of plankton sampling to compliment the Umitaka Maru work. Complimentary oceanographic sampling was conducted on all vessels. The combined 45 days proved more effective than the original planned 48 days on one ship, which had a substantial amount of time scheduled for changing gear between benthic and pelagic equipment as well as backtracking over the same ground. Three ships also provided more berths for more scientists and international collaborators and produced a greater number of sites sampled. Spreading the work amongst three ships also allowed the CASO and CEAMARC projects to combine on one voyage providing greater synergy between the two projects.
Taken from the 2008-2009 Progress Report:
Variations to work plan or objectives:
The original work plan requested 48 days of on-site ship time and included sampling both pelagic and benthic environments from the Aurora Australis. It soon became evident that there was insufficient ship time to adequately support all the major marine science projects in the 2007/08 season, i.e. the SIPEX sea ice survey PN2901 and PN2767, CASO PN2973 and CEAMARC PN2792. Both CASO and CEAMARC required the same sampling period of January and February for optimal success. The Tokyo University of Marine Science and Technology was invited to collaborate on CEAMARC with their vessel Umitaka Maru. Umitaka Maru conducted the sampling of plankton and fish in the pelagic and mesopelagic zones over 15 days in the survey area. Aurora Australis conducted the sampling for demersal fish and benthic organisms with 20 days allocated on site. Astrolabe joined the project providing an additional 10 days of plankton sampling to compliment the Umitaka Maru work. Complimentary oceanographic sampling was conducted on all vessels. The combined 45 days proved more effective than the original planned 48 days on one ship, which had a substantial amount of time scheduled for changing gear between benthic and pelagic equipment as well as backtracking over the same ground. Three ships also provided more berths for more scientists and international collaborators and produced a greater number of sites sampled. Spreading the work amongst three ships also allowed the CASO and CEAMARC projects to combine on one voyage providing greater synergy between the two projects.
Field work:
All field work for CEAMARC was completed.
Aurora Australis - 20 on-site ship days during the 42-day V3/CEAMARC CASO Voyage between 139 degrees and 145 degrees E and 67 degrees and 65 degrees 20' S. Sampling was conducted with AAD beam trawl (mounted with either video or still camera), Agassiz beam trawl, box corer the Geosciences Australia remotely operated video and CTD, with occasional samples using an epibenthic sledge. 88 sites were sampled.
Umitaka Maru - 15 on-site ship days between 140 degrees and 145 degrees E and south of 62 degrees S. Sampling was conducted at various fixed depths between the surface and 2,000 m using WP2, Norpac, and salp plankton nets, multinet, RMT1+8 midwater trawl, IYGPT midwater trawl, as well as a video plankton profiler and CTDs. This produced more than 300 plankon/fish net samples at 24 sites. 31 CTD casts were made with phytoplankton and water samples collected at set depths at each site for 264 phytoplankton samples.
L'Astrolabe - 10 on-site ship days between 140 degrees and 145 degrees 40'E and south of 65 degrees 50'S. Sampling was conducted with WP2 and bongo plankton nets, and CTD and bottles for phytoplankton. This produced 36 zooplankton samples and 112 phytoplankton samples at 20 stations.
Laboratory activity/analysis:
All demersal fish and benthic samples for taxonomic analysis were sent directly to the National Natural History Museum (MNHN) in Paris. Samples will be distributed to taxonomic experts within the museum and outwith the museum in Europe. WP2 net samples collected on Umitaka Maru, and the WP2 and bongo net samples, will be analysed at the University of Liege STARESO Marine Station, Corsica. The IYGPT fish samples from Umitaka Maru will be processed at the University of Paris VI - Zoology Station at Villefranche-sur-mer. The remaining plankton and fish samples from Umitaka Maru will be processed at TUMSAT and AAD laboratories. Processing of these samples have started at the AAD and TUMSAT in Tokyo. Whereas the samples being processed in France/Europe have only recently returned to Paris for distribution.
Identifications are required for collation of data by February 2008. Preliminary analysis of data is required by May 2008 for presentation at the CAML Symposium in Genoa Italy, and at the SCAR 10th Biology Symposium in Sapporo, July 2009. All data needs to be collated by December 2009 to meet deadlines for the international Census of Marine Life (CoML).
Access Constraints
See the child records and other CAML records for access to the data.
Data Set Progress
COMPLETE
Personnel
Role:
INVESTIGATOR
Role:
TECHNICAL CONTACT
Phone:
+61 3 6232 3364
Fax:
+61 3 6232 3158
Email:
graham.hosie at aad.gov.au
Contact Address:
Australian Antarctic Division
203 Channel Highway
City:
Kingston
Province or State:
Tasmania
Postal Code:
7050
Country:
Australia
Role:
INVESTIGATOR
Phone:
+61 3 6226 2959
Email:
michael.stoddart at utas.edu.au
Contact Address:
Institute for Marine and Antarctic Studies
University of Tasmania
City:
Hobart
Province or State:
Tasmania
Postal Code:
7001
Country:
Australia
Role:
DIF AUTHOR
Phone:
+61 3 6232 3244
Fax:
+61 3 6232 3351
Email:
dave.connell at aad.gov.au
Contact Address:
Australian Antarctic Division
203 Channel Highway
City:
Kingston
Province or State:
Tasmania
Postal Code:
7050
Country:
Australia
Publications/References
Lindsay, D., Page F., Corbera, J., Miyake, H., Hunt, J.C., Ichikawa, T., Segawa, K., and Yoshida, H. (In Press) The anthomedusan fauna of the Japan Trench: preliminary results from in situ surveys with manned and unmanned vehicles. Plankton Biology and Ecology
Lindsay, D., Pages, F., Corbera, J., Miyake, H., Hunt, J.C., Ichikawa, T., Segawa, K., and Yoshida, H. (2008), The anthomedusan fauna of the Japan Trench: preliminary results from in situ surveys with manned and unmanned vehicles, Journal of the Marine Biological Association of the United Kingdom, 88, 8, 1519-1540
Creation and Review Dates
DIF Creation Date:
2006-07-27
Last DIF Revision Date:
2012-05-07
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