Return to search results
AFSC/NMML: Video Analysis for Group Count and Calf Proximity of Beluga Whales in Cook Inlet, Alaska, 2005 - 2022
As a part of NMFS management of the endangered beluga whale population in Cook Inlet, Alaska, aerial surveys have been conducted during summer since 1993 to monitor their distribution and abundance. When beluga whale groups are found, observers make counts from the bubble windows while one observer records the group with a video camera. The video has been used to count the number of animals in the group to correct for missed animals in the observer counts. In 1996, a second video camera was added; the first video camera had a lens set at a wide angle to view the entire beluga group while the second video camera was zoomed to approximately 10x to magnify a subsample of individual whales in the group. The zoomed video has been used to examine color ratios of white adults relative to smaller and darker juveniles and calves and correct for those individuals missed due to their size or coloration. In 2005, a computer program was designed to digitize the process for analyzing the video, which had been conducted manually prior to that year. The program allows an analyst to digitally mark and number each individual whale image, track it across the screen, and measure relative whale size. The dataset described here includes the data from the years that video was analyzed using the computer program, 2005-2012, 2014, 2016, 2018, 2021, and 2022.
Resources
3 resources available
-
https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0133936
TEXT/HTML -
GCMD Keyword Forum Page
TEXT/HTML -
Full Metadata Record
TEXT/HTML
Find Related Datasets
Search by Tags
Click any tag below to search for similar datasets
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{ "fn": "Wade, Paul", "@type": "vcard:Contact", "hasEmail": "mailto:paul.wade@noaa.gov" } |
| describedByType | application/octet-steam |
| description | As a part of NMFS management of the endangered beluga whale population in Cook Inlet, Alaska, aerial surveys have been conducted during summer since 1993 to monitor their distribution and abundance. When beluga whale groups are found, observers make counts from the bubble windows while one observer records the group with a video camera. The video has been used to count the number of animals in the group to correct for missed animals in the observer counts. In 1996, a second video camera was added; the first video camera had a lens set at a wide angle to view the entire beluga group while the second video camera was zoomed to approximately 10x to magnify a subsample of individual whales in the group. The zoomed video has been used to examine color ratios of white adults relative to smaller and darker juveniles and calves and correct for those individuals missed due to their size or coloration. In 2005, a computer program was designed to digitize the process for analyzing the video, which had been conducted manually prior to that year. The program allows an analyst to digitally mark and number each individual whale image, track it across the screen, and measure relative whale size. The dataset described here includes the data from the years that video was analyzed using the computer program, 2005-2012, 2014, 2016, 2018, 2021, and 2022. |
| distribution |
[ { "@type": "dcat:Distribution", "title": "https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0133936", "accessURL": "https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0133936", "mediaType": "text/html", "description": "csv files", "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/25718", "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/25718.xml |
| issued | 2005-01-01T00:00:00.000+00:00 |
| keyword |
[ "abundance", "aerial", "video analysis", "summer", "Alaska", "Cook Inlet", "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/25718 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2005-01-01T00:00:00.000+00:00 |
| publisher |
{ "name": "Alaska Fisheries Science Center", "@type": "org:Organization" } |
| rights | otherRestrictions, unclassified |
| spatial | -149.0,59.0,-154.5,61.5 |
| temporal | 2005-01-01T00:00:00+00:00/2022-01-01T00:00:00+00:00 |
| theme |
[ "geospatial" ] |
| title | AFSC/NMML: Video Analysis for Group Count and Calf Proximity of Beluga Whales in Cook Inlet, Alaska, 2005 - 2022 |
