Overview on seismic survey activities in the Southern Ocean
The Southern Ocean is the body of water which encircles the Antarctic continent. It extends from 60°S latitude to the Antarctic coastline and encompasses 360° longitude. It covers an area of about 20 million km2, which are about 56 times the size of Germany and slightly more than twice the size of t...
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| Format: | Conference Object |
| Language: | unknown |
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2006
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| Online Access: | https://epic.awi.de/id/eprint/15591/ https://hdl.handle.net/10013/epic.25707 |
| Summary: | The Southern Ocean is the body of water which encircles the Antarctic continent. It extends from 60°S latitude to the Antarctic coastline and encompasses 360° longitude. It covers an area of about 20 million km2, which are about 56 times the size of Germany and slightly more than twice the size of the United States. It mainly includes the Amundsen Sea, Bellingshausen Sea, Wedell Sea, Ross Sea and parts of the Scotia Sea and Drake Passage. The Southern Ocean is rather deep with 4000 - 5000 m water depth over most of is extent and only limited parts of shallow water. Most parts of the continental shelves are ice-covered.Based on the Antarctic Treaty System seismic survey activities in the Southern Ocean are confined to academic research. Due to the environmental conditions they only take place during the austral summer seasons. In order to allow a scientific exchange and provide an open access to all Antarctic multichannel seismic reflection data (MCS) for use in cooperative research projects the Antarctic Seismic Data Library System For Cooperative Research (SDLS) was created in April 1991 to function under the auspices of the Scientific Committee of Antarctic Research (SCAR). According to the regulations described in the SCAR Report No 9, January 2001, all digital MCS data has to be submitted to the SDLS within 4 years of collection, remain there under SDLS guidelines for 4 years and go to World Data Centres or equivalents for general dissemination 8 years after collection. Additionally, the navigation data of all MCS track lines should be made available via the SDLS almost immediately after the end of the cruises. Thus, the SDLS is not only a tool for scientific data exchange and access but is also a tool which provides an overview on all completed MCS survey activities, so that future track lines can be planned, duplication of lines can be avoided and acoustic impacts can be minimized.After a recent update finished 30 June, 2006 the SDLS presently contains data from 121 MCS cruises collected by 15 nations ... |
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