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HelicopterSurveysANTXXIII/8 Citation Marine mammal helicopter survey data ANTXXIII/8. https://marineinfo.org/id/dataset/2041 Availability: Unrestricted after moratorium period Data are initially restricted, but the access condition relaxes to academic or unrestricted once a specified period of time after an event (such as collection, publication, completion of QC procedures or project cessation) has elapsed Description During the ANT XXIII/8 cruise (November 26th 2006 to January 29th 2007) the German research vessel ‘Polarstern’ surveyed Antarctic waters from the eastern Weddell Sea to the South Shetland Islands. Helicopters on board were used to conduct dedicated surveys for cetaceans and in part pinnipeds. Helicopter surveys followed line transect distance sampling protocol flying ‘ad hoc’ survey patterns as well as pre-designed tracklines covering in total about 9000km of on effort tracklines. Environmental information was collected continuously during the surveys and included parameters such as cloud cover, sea state, glare on water and percent ice coverage. Cetacean species identified during both aerial and shipboard effort included Humpback whales, fin whales, sei whales, Antarctic minke whales, Arnoux’s Beaked Whales, Strap-toothed Whales, Gray’s Beaked whales, Southern Bottlenose Whales and Killer Whales. more The database consists of data entries for every four seconds. For each of these 4 second windows a range of information is given. Each entry is georeferenced with Latitude and Longitude (in decimal degrees). The following type of information is provided: 1. Effort 2. Environment 3. Sightings Thus for each 4 second segment information on the environmental conditions of that segment are provided as well as information on any sightings. Scope Themes: Biology > Mammals Keywords: Marine/Coastal, Abundance, Antarctic waters, Distribution, Marine mammals, Antarctica, Aves, Cetacea, Pinnipedia Geographical coverage Antarctica [Marine Regions] Temporal coverage 1 December 2006 - 26 January 2007 Daily Parameters Density Presence of biota Contributor Wageningen University and Research Centre; Institute for Marine Resources and Ecosystem Studies (IMARES), more, data owner Dataset status: Completed Data type: Data Data origin: Research: field experiment Metadatarecord created: 2009-08-11 Information last updated: 2009-08-21 | ||||
