gov.noaa.ncei:AR88_Towed_Array_EK80 eng; USA utf8 series Water Column Sonar Series-Level Metadata NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact 2026-01-15 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) curve 58 World Geodetic System 1984 WGS 84 2007-08-27 revision https://epsg.org/crs_4326/WGS-84.html WGS 84 GML of World Geodetic System 1984 coordinate reference system. information resourceProvider European Petroleum Survey Group https://epsg.org/home.html European Petroleum Survey Group Geodetic Parameter Registry Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations. search publisher urn:ogc:def:crs:EPSG::4326 Vertical Datum: Unknown Vertical Datum: Unknown Towed Array EK80 Water Column Sonar Data Collected During AR88 2025-04-24 creation 2026-01-12 publication NOAA National Centers for Environmental Information AR88_Towed_Array_EK80 International DOI Foundation (IDF) doi:10.25921/2dce-6g57 NOAA National Centers for Environmental Information NCEI Metadata ID:AR88_Towed_Array_EK80 NOAA National Centers for Environmental Information custodian NOAA National Centers for Environmental Information publisher Mei Sato WHOI Assistant Scientist 508-289-3482 266 Woods Hole Rd Woods Hole MA 02543 USA msato@whoi.edu principalInvestigator Woods Hole Oceanographic Institution (WHOI) United States http://argo.whoi.edu/ Argo project website information author The Northeast U.S. Shelf Long-Term Ecological Research program (NES-LTER) is designed to improve our ability to predict how climate change will affect the dynamics of the shelf’s planktonic food webs and their ability to support the productivity of higher trophic levels. Ship-based field osbervations were conducted 4 times a year with multidisciplinary measurements of physical, biological, and chemical properties in the ocean. This data is available to the public for a wide variety of uses including scientific research and analysis. completed NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information pointOfContact NOAA National Centers for Environmental Information Water Column Sonar Data Manager (303) 497-4742 325 Broadway, Mail Code E/NE42 Boulder CO 80305-3328 USA wcd.info@noaa.gov pointOfContact notPlanned Earth Science > Oceans > Ocean Acoustics > Acoustic Scattering Earth Science > Oceans > Aquatic Sciences > Fisheries Earth Science > Oceans > Ocean Acoustics Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Pelagic Earth Science > Biosphere > Ecosystems > Marine Ecosystems Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Benthic Earth Science > Biosphere > Ecosystems > Aquatic Ecosystems Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography theme Global Change Master Directory (GCMD) Science Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. 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 North Atlantic Ocean place International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23) 2010-08-24 revision International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23) https://iho.int/ International Hydrographic Organization (IHO) Sea Area ("Limits of Oceans and Seas" publication S-23) Publication of Sea Areas is maintained by IHO. information resourceProvider DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. 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 Vertical Location > Water Column place Global Change Master Directory (GCMD) Location Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. 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 In Situ/Laboratory Instruments > Profilers/Sounders > Acoustic Sounders > WCMS > Water Column Mapping System instrument Global Change Master Directory (GCMD) Instrument Keywords 2025 revision 22 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. 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 otherRestrictions Cite as: WHOI. 2026. Towed Array EK80 Water Column Sonar Data Collected During AR88. NOAA National Centers for Environmental Information. https://doi.org/10.25921/2dce-6g57 [access date] otherRestrictions 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. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose These data are considered raw and have not been subjected to the NOAA's quality control or quality assurance procedures. They are released for limited public use as preliminary data to be used only with appropriate caution. 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. Not subject to copyright protection within the United States. otherRestrictions Resource may not be available for up to one year after initial collection. AR88 largerWorkCitation operation NES-LTER largerWorkCitation program eng; USA oceans geoscientificInformation -70.93534 -70.8799 39.72602 41.1927 2025-04-24T00:00:00 2025-04-29T11:59:59 Trackline physicalMeasurement NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact NCEI Contact Information Information for contacts at NCEI. information distributor Free Contact the NCEI Water Column Sonar Data Manager to order data. EK80 1 Simrad EK80 raw files. See the Simrad EK80 interface specification manual for additional information. https://www.ncei.noaa.gov/maps/water-column-sonar/index.html?surveys=AR88&instruments=EK80 HTTPS Water Column Sonar Data Map Viewer Interactive map viewer to allow discovery and access to water column sonar data search https://registry.opendata.aws/ncei-wcsd-archive/ HTTPS AWS Cloud Storage Bucket AWS Cloud Storage to provide additional public access to water column sonar data through the NOAA Open Data Dissemination project (NODD) download https://www.ngdc.noaa.gov/mgg/wcd/ HTTPS Water Column Sonar Data Archive Homepage Web page containing information on the water column sonar data archive. information collectionHardware Instrument calibration information Uncalibrated series Horizontal Positional Accuracy Positional accuracy dependent on navigation GPS, ship motion correction, and sound velocity profile accuracy. true Vertical Positional Accuracy Vertical accuracy is dependent on navigation GPS and ship motion corrections. true Raw unprocessed data files 2025-04-24T00:00:00 Mei Sato WHOI Assistant Scientist 508-289-3482 266 Woods Hole Rd Woods Hole MA 02543 USA msato@whoi.edu principalInvestigator series This data were collected through tow-yowed vehicle. Simrad EK80 Echosounder EK80 Simrad - Kongsberg Maritime AS https://www.kongsberg.com/discovery/ocean-science/ek-family/ek80/ Simrad Ek80 information web page Page contains general information on the Ek80 and has links to details on operation and file formats information resourceProvider Simrad EK80 echosounder The Simrad EK80 is the most modern "high end" split beam scientific echo sounder in the fishery scientific market. Based on more than 60 years of research and development in close collaboration with leading marine scientists this wide band echo sounder system has succeeded the famous EK60, which became an international standard for fish stock assessment. The Simrad EK80 can operate a large number of frequencies simultaneously ranging from 10 to 500 kHz. A wide selection of high quality accurate transducers is available. AR88_Towed_Array_EK80 completed R/V Neil Armstrong (AGOR-27) Armstrong (AR) The R/V Neil Armstrong supports advanced oceanographic research in tropical and temperate oceans around the world. It also serves the academic community's ongoing need for a general-purpose ship based on the East Coast of the United States. The pivotal role that the North Atlantic and Arctic Oceans plays in Earth’s climate results in an increase in efforts to observe these areas, as well new efforts to study North Atlantic ecosystems and their sustainability. R/V Neil Armstrong is be uniquely equipped and positioned to enable scientists from around the world to reveal new details about this critical part of the global ocean. DOD/USNAVY/ONR> U.S. Navy Office of Naval Research 703-696-5031 875 North Randolph Street Arlingto VA 22203 USA onrpublicaffairs@navy.mil pointOfContact Woods Hole Oceanographic Institution 508-289-2252 266 Woods Hole Road Woods Hole MA 02543 USA marineops@whoi.edu 8am-5pm, Monday through Friday resourceProvider Kongsberg EM710 Multibeam Echosounder EM710 Kongsberg Maritime http://www.km.kongsberg.com/ks/web/nokbg0240.nsf/AllWeb/993132242751F5EDC1256FA300360548?OpenDocument resourceProvider Kongsberg EM710 Multibeam Echosounder The EM 710 multibeam echosounder is a high to very high resolution (up to 800 soundings per ping) seabed mapping system capable of meeting all relevant survey standards. The system configuration can be tailored to the user's requirement, allowing for choice of beam widths as well as transmission modes. The minimum survey depth is from less than 3 meters below the transducers, and the maximum depth is approximately 2000 meters, somewhat dependant upon array size. Across track coverage (maximum swath width 140º) is up to 5.5 times water depth, to a maximum survey depth more than 2000 meters. The along track beamwidth depends upon the chosen transmit transducer configuration with 0.5º, 1º and 2º available as standard. The receive beam width is either 1º or 2º depending on the chosen receive transducer. The EM 710 operates at sonar frequencies in the 70 to 100 kHz range. The transmit fan is divided into three sectors to maximize range capability, but also to suppress interference from multiples of strong bottom echoes. The sectors are transmitted sequentially within each ping, and uses distinct frequencies or waveforms. Kongsberg EM122 multibeam echosounder Simrad EK80 Echosounder EK80 Simrad - Kongsberg Maritime AS https://www.kongsberg.com/discovery/ocean-science/ek-family/ek80/ Simrad Ek80 information web page Page contains general information on the Ek80 and has links to details on operation and file formats information resourceProvider Simrad EK80 echosounder The Simrad EK80 is the most modern "high end" split beam scientific echo sounder in the fishery scientific market. Based on more than 60 years of research and development in close collaboration with leading marine scientists this wide band echo sounder system has succeeded the famous EK60, which became an international standard for fish stock assessment. The Simrad EK80 can operate a large number of frequencies simultaneously ranging from 10 to 500 kHz. A wide selection of high quality accurate transducers is available.