gov.noaa.ncei.oer:EX2103_Sound_Velocity_Profile_COLLECTION eng; USA utf8 dataset 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 2026-02-25T20:16:23 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) EX2103: 2021 ROV Shakedown (ROV & Mapping) EX-2103 2021-06-13 publication NOAA National Centers for Environmental Information NCEI Metadata ID:EX2103 Kasey Cantwell NOAA Office of Ocean Exploration and Research principalInvestigator NOAA Office of Ocean Exploration and Research author NOAA National Centers for Environmental Information publisher This Remotely Operated Vehicle (ROV) shakedown expedition aboard NOAA Ship Okeanos Explorer began in Norfolk, Virginia on June 13, 2021 and concluded on June 28, 2021 in Newport, Rhode Island. This was the first time the ROVs Deep Discoverer and Seirios were mobilized and used for ROV dives since the extensive 2021 winter dry dock repair period. While underway, 24‐hour operations focused on preparing remotely operated vehicle (ROV) systems for the remainder of 2021 expeditions. Extensive testing, calibration, and troubleshooting was completed for new ROV motors, motor controllers, cameras, lighting, hydraulic systems, and a navigational sonar during 11 ROV dives. The first five dives progressively got to deeper depths ranging from 670 m to 4370 m with the primary objective of new equipment integration and personnel training. The following five dives were conducted on Caryn Seamount, and the mid-Atlantic canyons Toms, Hudson (twice), and Uchupi. The last dive of the expedition was on a recently discovered sonar anomaly that turned out to be a World War II era submarine, the Humaitá (ex-USS Muskallunge). Five biological and three geological samples were collected for later analyses from Caryn Seamount and the mid-Atlantic canyons. Mapping operations during the expedition included continued calibrating and troubleshooting of the ship's new EM304 multibeam sonar and transducer array. Additional mapping operations included improving multibeam bathymetry in previously mapped areas, sub-bottom sonar surveys conducted on the Currituck landslide feature off of North Carolina, EK60 water column sonar survey of the diurnal migration above Hudson Canyon, and searching for underwater cultural heritage sites by observing sonar depth and backscatter anomalies. EX-21-03 is a ROV shakedown cruise will focus on the operational readiness of the dual body ROV system Seirios and Deep Discoverer (D2). Overnight operations will also include mapping using the ship’s suite of acoustic sonars. Operations will focus on waters off the continental shelf in the U.S. Mid-Atlantic region between Virginia and Rhode Island, and will extend outside of the U.S. EEZ to Caryn Seamount. Mapping and ROV operations will focus on exploring depths between 250 and 5,000 meters. 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 Earth Science > Oceans 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 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 NOAA Ship Okeanos Explorer Deep Discoverer ROV SEIRIOS Camera Sled platform Global Change Master Directory (GCMD) Platform 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 Acoustic Sounders CTD > Conductivity, Temperature, Depth XBT > Expendable Bathythermographs 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 DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/OAR/OER > Office of Exploration and Research, Oceanic & Atmospheric Research, 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 Access Constraints: No access constraints Use Constraints: No use constraints. EX2103: 2021 ROV Shakedown (ROV & Mapping) publication Cruise ID: EX2103 NOAA Office of Ocean Exploration and Research https://data.noaa.gov/waf/NOAA/NESDIS/ncei/oer/iso/xml/EX2103_COLLECTION.xml information largerWorkCitation operation eng; USA oceans geoscientificInformation -76.286 -67.977 36.29 41.487 2021-06-13 2021-06-27 Datasets for sound velocity profiles are collected from an expendable bathythermograph (XBT) and for conductivity temperature depth (CTD). 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 In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. RAW https://data.noaa.gov/waf/NOAA/NESDIS/ncei/oer/iso/xml/EX2103_COLLECTION.xml HTTPS Metadata Landing Page completeMetadata https://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=gov.noaa.nodc:0239653 information fileAccess https://www.ncei.noaa.gov/maps/oer-digital-atlas/mapsOE.htm information OER Digital Atlas information dataset Processing Steps Sound Speed Manager (SSM), co-developed by NOAA and the University of New Hampshire Center for Coastal and Ocean Mapping / Joint Hydrographic Center, is used to convert sound velocity profiles for input into the multibeam data acquisition software package, Seafloor Information Systems (SIS). Sound velocity profiles are collected in native formats for expendable bathythermograph (XBT) (.edf, .rdf) and conductivity temperature depth (CTD) (.hex, .cnv) systems and are processed into .asvp format for SIS. SSM is also used during shallow water transits when conducting constant XBTs is not practical, for example transits across continental shelves to and from port, to provide historical sound velocity profiles downloaded from the World Ocean Atlas version 13. Kasey Cantwell processor 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 unclassified none asNeeded Okeanos Explorer NOAA Ship Okeanos Explorer is the only federal vessel dedicated to exploring our largely unknown ocean for the purpose of discovery and the advancement of knowledge about the deep ocean. Lockheed Martin Sippican eXpendable BathyThermograph/eXpendable Sound Velocimeter Sippican XBT/XSV Lockheed Martin Sippican, Inc. https://www.lockheedmartin.com/content/dam/lockheed/data/ms2/documents/ocean/20050054_XBT_XSV_reader_page.pdf Lockheed Martin Sippican eXpendable BathyThermograph/eXpendable Sound Velocimeter Lockheed Martin Sippican eXpendable BathyThermograph/eXpendable Sound Velocimeter information information resourceProvider Sippican XBT/XSV Temperature, Depth, Sound Velocity The Expendable Bathythermograph is used by scientists to provide an ocean temperature versus depth profile. Useful for oceanographic research, the XBT does not restrict ship mobility. The Expendable Sound Velocimeter obtains accurate sound velocity profiles for the support of ASW operations, mine countermeasure operations, and oceanographic research. Sea-Bird Electronics 911plus CTD SBE 911plus CTD Sea-Bird Electronics, Inc. 425-643-9866 425-643-9954 13431 NE 20th Street Bellevue WA 98005 USA seabird@seabird.com SBE 911plus CTD SBE 911plus CTD information information resourceProvider SBE 911plus CTD Conductivity, Temperature The 911plus, consisting of the 9plus underwater CTD and 11plus V2 Deck Unit, is a premium real-time CTD accurate to the highest international standards. It features high resolution sampling (24 Hz), pump-controlled T-C ducted flow, up to 10500 meter (15,000 psia) depth capability, maximum auxiliary sensor flexibility, and modem channel for Water Sampler control. The 911plus has eight 12-bit A/D channels, and supports redundant conductivity and temperature sensors or custom auxiliary digital inputs.