e7c3f05f-7677-408c-b98d-d35bd2171550 eng utf8 dataset dataset NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom polardatacentre@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact 2024-07-03 ISO 19115 Geographic Information - Metadata ISO 19115:2003(E) European Petroleum Survey Group (EPSG) Geodetic Parameter Registry 2008-11-12 publication European Petroleum Survey Group EPSGadministrator@iogp.org https://www.epsg-registry.org/ EPSG Geodetic Parameter Dataset The EPSG Geodetic Parameter Dataset is a structured dataset of Coordinate Reference Systems and Coordinate Transformations, accessible through this online registry. information publisher urn:ogc:def:crs:EPSG::3031 6.18.3 Raw acoustic data collected by an EK80 echosounder at King George Island on board the RRS Sir David Attenborough cruise SD025 (25 February 2023) 2024-07-03 creation 2024-07-03 revision 2024-07-03 publication 2024-07-03 released 1.0 https://doi.org/10.5285/e7c3f05f-7677-408c-b98d-d35bd2171550 doi GB/NERC/BAS/PDC/01861 https://data.bas.ac.uk/ Please cite this item as: Fielding, S. (2024). Raw acoustic data collected by an EK80 echosounder at King George Island on board the RRS Sir David Attenborough cruise SD025 (25 February 2023) (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/e7c3f05f-7677-408c-b98d-d35bd2171550 Acoustic backscatter data were collected on board the RRS Sir David Attenborough during polar science trials 2023 (cruise SD025) on 25/02/2023 in Admiralty Bay, King George Island, Antarctica. Data were collected using a Simrad EK80 echosounder at 18, 38, 70, 120, 200 and 333 kHz. The EK80 was calibrated on 10/03/2023 in the Weddell Sea. This work was supported by NERC core funding to BAS. No credit. completed Fielding, Sophie British Antarctic Survey Researcher author NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information pointOfContact asNeeded completed EARTH SCIENCE > Oceans > Ocean Acoustics > Acoustic Scattering EARTH SCIENCE > Oceans > Marine Environment Monitoring theme Global Change Master Directory (GCMD) Science Keywords 2026-01-27 publication 23 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) Greenbelt MD United States of America https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher EK80 King George Island echosounder theme King George Island, Admiralty Bay Southern Ocean place Oceanographic geographical features theme GEMET - INSPIRE themes, version 1.0 2021-01-06 revision otherRestrictions no limitations to public access otherRestrictions no limitations license Open Government Licence v3.0 otherRestrictions This data is governed by the NERC data policy and supplied under Open Government Licence v.3 otherRestrictions None. url url crossReference textTable eng utf8 environment oceans -58.4384 -58.2 -62.5 -62.0609 2023-02-25 2023-02-25 It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk. NERC EDS UK Polar Data Centre +44 (0)1223 221400 British Antarctic Survey, High Cross, Madingley Road Cambridge Cambridgeshire CB3 0ET United Kingdom PDCServiceDesk@bas.ac.uk https://www.bas.ac.uk/team/business-teams/information-services/uk-polar-data-centre/ information distributor application/octet-stream text/plain bytes 349502963712 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=e7c3f05f-7677-408c-b98d-d35bd2171550 WWW:LINK-1.0-http--link Get Data Download data download bytes 349502963712 http://ramadda.data.bas.ac.uk/repository/entry/show?entryid=e7c3f05f-7677-408c-b98d-d35bd2171550 WWW:LINK-1.0-http--link Get Data Download data download dataset Methodology: The dataset comprises Simrad EK80 raw format data files that have not undergone any processing or quality checking. Each data file contains approximately 2 minutes of data and is approximately 518 MB in size. Each data file contains raw ping data with associated GPS fixes and date/time. In order to process the data, 3 files in the TOML syntax language are supplied: - transect file (defines the start and end times for a given transect, list the raw and environmental files making up the transect, and references to associated metadata and calibration files) - water column active acoustic metadata file (compliant with ICES. 2016, a metadata convention for processed acoustic data from active acoustic systems, SISP 4 TG-AcMeta Version 1.10, ICES WGFAST Topic Group, TG-AcMeta. 47 pp.) - calibration file (calibration data and metadata ((compliant with ICES. 2016, a metadata convention for processed acoustic data from active acoustic systems, SISP 4 TG-AcMeta Version 1.10, ICES WGFAST Topic Group, TG-AcMeta. 47 pp.) Data collection: Data were collected using a Simrad EK80 echosounder at 18, 38, 70, 120, 200 and 333 kHz. Data quality: Raw data (time, gps and acoustic) are not quality checked. The instrument was calibrated on 10/03/2023 in the Weddell Sea. asNeeded completed