AFSC/NMML: Bowhead Whale Aerial Abundance Survey off Barrow, Alaska, Spring 2011
Aerial photographic surveys for bowhead whales were conducted near Point Barrow, Alaska, from 19 April to 6 June in 2011. Approximately 4,594 photographs containing 6,801 bowhead whale images were obtained (not accounting for resightings). The 2011 field season was very successful: we flew 36 out of 49 available days and conducted 49 flights in that time; we were grounded due to weather on 13 days. The longest period of time that we were grounded due to weather (low ceilings/fog) was three days. This occurred after the migration had slowed down, during a time when few whales passed the ice perches according to the ice-based visual survey. The 2011 migration was steady with several peaks (30 April, 4-5 May, 12 May), and then the migration rate slowed down considerably after 14 May. The photographs taken in 2011 are a significant contribution to the bowhead whale photographic catalogue. They will be used to calculate a population estimate that may be used for comparison with the 2011 ice-based estimate and will provide better precision in estimates of bowhead whale life-history parameters.
Resources
3 resources available
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https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0133937
TEXT/HTML -
GCMD Keyword Forum Page
TEXT/HTML -
Full Metadata Record
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Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{ "fn": "Angliss, Robyn", "@type": "vcard:Contact", "hasEmail": "mailto:robyn.angliss@noaa.gov" } |
| describedByType | application/octet-steam |
| description | Aerial photographic surveys for bowhead whales were conducted near Point Barrow, Alaska, from 19 April to 6 June in 2011. Approximately 4,594 photographs containing 6,801 bowhead whale images were obtained (not accounting for resightings). The 2011 field season was very successful: we flew 36 out of 49 available days and conducted 49 flights in that time; we were grounded due to weather on 13 days. The longest period of time that we were grounded due to weather (low ceilings/fog) was three days. This occurred after the migration had slowed down, during a time when few whales passed the ice perches according to the ice-based visual survey. The 2011 migration was steady with several peaks (30 April, 4-5 May, 12 May), and then the migration rate slowed down considerably after 14 May. The photographs taken in 2011 are a significant contribution to the bowhead whale photographic catalogue. They will be used to calculate a population estimate that may be used for comparison with the 2011 ice-based estimate and will provide better precision in estimates of bowhead whale life-history parameters. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0133937", "accessURL": "https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0133937", "mediaType": "text/html", "description": "Six csv files: Comments, GPS, GrpPassMark, Positions, Sightings, and Weather.", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "GCMD Keyword Forum Page", "accessURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords", "mediaType": "text/html", "description": "Global Change Master Directory (GCMD). 2026. GCMD Keywords, Version 24. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords", "describedByType": "application/octet-stream" }, { "@type": "dcat:Distribution", "title": "Full Metadata Record", "accessURL": "https://www.fisheries.noaa.gov/inport/item/17334", "mediaType": "text/html", "description": "View the complete metadata record on InPort for more information about this dataset.", "describedByType": "application/octet-stream" } ] |
| identifier | https://data.noaa.gov/waf/NOAA/nmfs/afsc/iso/xml/17334.xml |
| issued | 2011-01-01T00:00:00.000+00:00 |
| keyword |
[ "aerial", "distribution", "photo-identification", "spring", "Beaufort Sea", "Chukchi Sea", "DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce", "Cetacean Assessment and Ecology Program" ] |
| landingPage | https://www.fisheries.noaa.gov/inport/item/17334 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2011-01-01T00:00:00.000+00:00 |
| publisher |
{ "name": "Alaska Fisheries Science Center", "@type": "org:Organization" } |
| rights | otherRestrictions, unclassified |
| spatial | -148.0,68.0,-165.0,72.0 |
| temporal | 2011-04-01T00:00:00+00:00/2011-06-01T00:00:00+00:00 |
| theme |
[ "geospatial" ] |
| title | AFSC/NMML: Bowhead Whale Aerial Abundance Survey off Barrow, Alaska, Spring 2011 |
