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    • Chukchi and East Siberian Surveys (ChESS): Joint U.S.-Russian Aerial Surveys for Ice-Associated Seals and Polar Bears, 2016

    Metadata Updated: May 1, 2024

    The Chukchi and East Siberian Surveys (ChESS) were a joint U.S.-Russian effort to enumerate ice-associated seals and polar bears in the Chukchi and East Siberian seas. ChESS is a component of the Loss of Sea Ice (LOSI) initiative, which is a multi-disciplinary effort led by the Habitat and Ecological Processes Research (HEPR) Program at NOAA Fisheries’ Alaska Fisheries Science Center.

    The focus of this project was to provide baseline distribution and abundance data for breeding populations of bearded and ringed seals in the Chukchi Sea and to provide additional polar bear population estimates. Russian colleagues conducted aerial surveys in the western Chukchi and east Siberian seas while U.S. colleagues conducted surveys in the eastern Chukchi Sea. These surveys were designed to occur concurrently using similar methodology.

    Access & Use Information

    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Date April 17, 2024
    Metadata Created Date May 1, 2024
    Metadata Updated Date May 1, 2024
    Reference Date(s) 2016 (creation), 2019 (revision), (publication)
    Frequency Of Update notPlanned

    Metadata Source

    Harvested from NMFS AFSC

    Other Data Resources

    Graphic Preview

    Poster presentation describing survey objectives and methods.

    Additional Metadata

    Resource Type Dataset
    Metadata Date April 17, 2024
    Metadata Created Date May 1, 2024
    Metadata Updated Date May 1, 2024
    Reference Date(s) 2016 (creation), 2019 (revision), (publication)
    Responsible Party (Point of Contact, Custodian)
    Contact Email
    Guid gov.noaa.nmfs.inport:46153
    Access Constraints Cite As: Alaska Fisheries Science Center, [Date of Access]: Chukchi and East Siberian Surveys (ChESS): Joint U.S.-Russian Aerial Surveys for Ice-Associated Seals and Polar Bears, 2016 [Data Date Range], https://www.fisheries.noaa.gov/inport/item/46153., Access Constraints: The data set is in the process of being archived with the NOAA National Centers for Environmental Information. Once the archival process is complete and verified, the data set will be publicly available., Use Constraints: User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. Acknowledge NOAA/NMFS/AFSC or the specified citation as the source from which these data were obtained in any publications and/or other representations of these data. Communication and collaboration with dataset authors is strongly encouraged., Distribution Liability: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
    Bbox East Long -155
    Bbox North Lat 74.5
    Bbox South Lat 65
    Bbox West Long -169
    Coupled Resource
    Frequency Of Update notPlanned
    Graphic Preview Description Poster presentation describing survey objectives and methods.
    Graphic Preview File https://access.afsc.noaa.gov/pubs/posters/pdfs/pMoreland05_chess-surveys-seals-bears.pdf
    Graphic Preview Type PDF
    Harvest Object Id c4a18a8f-2d62-4fbf-b877-b4759785d73f
    Harvest Source Id 26a29bb9-50b0-47fd-920b-edc74aa6ec76
    Harvest Source Title NMFS AFSC
    Licence NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
    Lineage Hot spots that may be seals were detected in thermal image files using custom software (Skeyes 2016 R73, installers 49 and 79) which identifies and catalogs hot spots based on an outlier algorithm and additional criteria regarding the peak of temperature data across a hot spot (amplitude, slope, and second derivative) and the area of a hot spot. These were then manually reviewed and classified using the paired color imagery.
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-169.0, 65.0], [-155.0, 65.0], [-155.0, 74.5], [-169.0, 74.5], [-169.0, 65.0]]]}
    Progress underDevelopment
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2016-04-01
    Temporal Extent End 2016-05-31

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