gov.noaa.nodc:0123188 eng utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2025-12-14T21:05:20Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Aerial Survey Counts of Harbor Seals in Lake Iliamna, Alaska, 1984-2013 (NCEI Accession 0123188) 2015-01-22 publication 2015-06-18 revision 2014-11-08 creation International DOI Foundation (IDF) 10.7289/v5h41pcq NOAA National Centers for Environmental Information gov.noaa.nodc:0123188 NCEI Archive Management System 0123188 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Joshua M. London NOAA Alaska Fisheries Science Center, Marine Mammal Laboratory (NMFS/AFSC/MML) josh.london@noaa.gov https://www.fisheries.noaa.gov/about/marine-mammal-laboratory HTTPS NOAA Alaska Fisheries Science Center, Marine Mammal Laboratory (NMFS/AFSC/MML) website Institution web page information resourceProvider NOAA Alaska Fisheries Science Center, Marine Mammal Laboratory (NMFS/AFSC/MML) https://www.fisheries.noaa.gov/about/marine-mammal-laboratory HTTPS NOAA Alaska Fisheries Science Center, Marine Mammal Laboratory (NMFS/AFSC/MML) website Institution web page information resourceProvider Withrow, David E. NOAA National Marine Mammal Laboratory author London, Josh M. NOAA National Marine Mammal Laboratory author Yano, Kymberly M. NOAA Pacific Islands Fisheries Science Center author Boveng, Peter L. NOAA National Marine Mammal Laboratory author NOAA Alaska Fisheries Science Center, Marine Mammal Laboratory (NMFS/AFSC/MML) https://www.fisheries.noaa.gov/about/marine-mammal-laboratory HTTPS NOAA Alaska Fisheries Science Center, Marine Mammal Laboratory (NMFS/AFSC/MML) website Institution web page information contributor tableDigital This dataset provides counts of harbor seals from aerial surveys over Lake Iliamna, Alaska, USA. The data have been collated from three previously published sources (Mathisen and Kline 1992; Small 2001; ABR Inc. Environmental Research and Services 2011) and newly available data from the NOAA Alaska Fisheries Science Center and the Newhalen Tribal Council. The survey years range between 1984 and 2013. Counts are reported as summed totals across all identified waypoints in the lake for each survey date. The NOAA National Marine Mammal Laboratory (NMML) (Alaska Fisheries Science Center, Seattle, Washington, USA) conducted aerial surveys of Iliamna Lake between 2008 and 2013. Surveys were conducted as part of annual harbor seal survey effort and in collaboration with local community participants and researchers at the University of Alaska. Surveys were flown using high wing, twin engine aircraft (Aero Commander 680, 690 or a de Havilland Twin Otter). Survey altitude was generally 330 m and at an aircraft speed of 120 kts. Surveys were performed seasonally for most years between 2008 and 2013. Surveys were timed so that one survey was conducted while the lake was mostly frozen (Late March/early April), one during pupping (mid July), and often several during the August molt, when the greatest number of seals typically haul out on shore. Surveys were flown, weather allowing, in the mid- to late-afternoon, when the number of seals hauled out was expected to be highest. Aircraft flight track was recorded by GPS and all seals sighted were digitally photographed using a high resolution digital SLR camera with a telephoto zoom lens (up to 400mm). Time, date, latitude, longitude, and altitude were automatically saved into the image metadata or georeferenced post survey using the GPS track and software. The total number of seals hauled out were counted from the digital photographs and recorded for each identified site. Pups were determined by their smaller size, and close proximity (less than 1 body length; either nursing or laying right next) to a larger seal. Pups were no longer recorded beyond about mid-August when many have been weaned and cannot reliably be distinguished from other non-adult seals. In 2009, a collaborative effort between NMML and researchers from the Newhalen Tribal Council (Newhalen Tribal Council 2009) provided 10 additional surveys and similar techniques were used. The raw survey count data from these surveys was provided to NMML. Aerial surveys were authorized under a Marine Mammal Protection Act General Authorization (LOC No. 14590) issued to the NMML. Between 2005 and 2007, ABR, Inc. Environmental Research and Services conducted a series of aerial surveys for harbor seals in Iliamna Lake (ABR Inc. Environmental Research and Services 2011). In addition, earlier counts from surveys conducted by ADFG (Small 2001) and a 1991 census by Mathisen and Kline (Mathisen and Kline 1992) were incorporated into the dataset to expand the historical reach. Geographic coordinates were provided (or, when not provided, determined based on descriptions or physical maps) for each survey site and these sites were compared and merged with locations identified by NMML. In some cases, sites in very close geographic proximity were combined into a single site. The iliamna_totalcounts file provides counts (n=96) and observed weather conditions for each survey date. Both total number of adult seals (adulttotal) and total number of identified pups (puptotal) are provided when available. puptotal is recorded as NA when adults and pups were not distinguished. In these cases, the adulttotal value is presumed to include pups. In addition to the seal count information, each record includes observed weather variables (airtemp (in ranges of degrees F), windspeed (in ranges of miles per hour), winddirection (cardinal), and descriptive categories for skycondition and precip). The datetime values correspond to local Alaska time. This dataset is available to the public for a wide variety of uses including scientific research and analysis. completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded NCEI Accession 0123188 was revised and a new version of the archival package was published. Updates to existing archival packages may provide additional files or replace obsolete files. The latest version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession. Please see journal.txt in the /about directory for additional details on changes made. https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0123188 Preview graphic PNG 0123188 NCEI ACCESSION NUMBER 2014-11-06 publication AIR TEMPERATURE ANIMALS - GROUP - NUMBER IN GROUP MARINE MAMMALS PRECIPITATION SPECIES IDENTIFICATION SPECIES IDENTIFICATION - LIFE STAGE WIND DIRECTION WIND SPEED theme NODC DATA TYPES THESAURUS visual analysis instrument NODC INSTRUMENT TYPES THESAURUS biological marine mammal observation survey - biological theme NODC OBSERVATION TYPES THESAURUS NOAA Alaska Fisheries Science Center, Marine Mammal Laboratory dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS NOAA Alaska Fisheries Science Center, Marine Mammal Laboratory dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Coastal Waters of Southeast Alaska and British Columbia place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NMFS/AFSC/MML > Marine Mammal Laboratory, Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. 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 information custodian EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND DIRECTION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND SPEED EARTH SCIENCE > ATMOSPHERE > PRECIPITATION EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MARINE MAMMALS theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. 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 information custodian OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. 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 information custodian accessLevel: public otherRestrictions Cite as: Withrow, David E.; London, Josh M.; Yano, Kymberly M.; Boveng, Peter L. (2015). Aerial Survey Counts of Harbor Seals in Lake Iliamna, Alaska, 1984-2013 (NCEI Accession 0123188). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5h41pcq. Accessed [date]. Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. 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Alaska Fisheries Science Center, 2015: A Dataset of Aerial Survey Counts of Harbor Seals in Iliamna Lake, Alaska: 1984-2013, https://www.fisheries.noaa.gov/inport/item/24457. 2015-02-03 publication gov.noaa.nmfs.inport:24457 https://www.fisheries.noaa.gov/inport/item/24457 HTTPS https://www.fisheries.noaa.gov/inport/item/24457 NOAA NMFS InPort catalogue record of data archived at NOAA NCEI information NOAA Alaska Fisheries Science Center (NMFS/AFSC) http://www.afsc.noaa.gov HTTP NOAA Alaska Fisheries Science Center (NMFS/AFSC) website Institution web page information publisher tableDigital crossReference study eng; USA utf8 environment oceans climatologyMeteorologyAtmosphere biota -154.94 -154.214 59.5281 59.7512 1984-08-06 2013-08-07 In this accession, NCEI has archived multiple versions of these data. The latest (and best) version of these data has the largest version number. 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Originator data format 0.24 https://doi.org/10.7289/v5h41pcq HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/oas/123188 HTTPS Web browser Descriptive Information Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/download/123188 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0072/0123188/ FTP Any FTP client FTP These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). download dataset NCEI Accession 0123188 v1.1 was published. 2015-01-22T20:14:05Z NCEI Accession 0123188 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0123188/1.1 HTTPS NCEI Accession 0123188 v1.1 published 2015-01-22T20:14:05Z download NCEI Accession 0123188 was revised and v1.2 was published. Additional metadata files were received or created for this dataset. These updates were copied into the about/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession. 2015-05-04T23:53:10Z NCEI Accession 0123188 v1.2 publication https://www.ncei.noaa.gov/archive/accession/0123188/1.2 HTTPS NCEI Accession 0123188 v1.2 published 2015-05-04T23:53:10Z download NCEI Accession 0123188 was revised and v2.3 was published. Updates were received for this dataset. These updates were copied into the data/0-data/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession. 2015-06-18T19:14:13Z NCEI Accession 0123188 v2.3 publication https://www.ncei.noaa.gov/archive/accession/0123188/2.3 HTTPS NCEI Accession 0123188 v2.3 published 2015-06-18T19:14:13Z download repository NOAA National Centers for Environmental Information NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015. 2015-04-22T00:00:00 asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian visual analysis visual analysis visual analysis and measurement of sample materials use visual analysis with observation types of visual estimate and/or visual observation