gov.noaa.nodc:0312601 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 2026-06-02T13:23:01Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) CTD, ADCP, BATHYMETRY, and others collected from the R/V Hakuho Maru in the Bering Sea and subarctic Pacific from 2025-06-18 to 2025-07-28 (NCEI Accession 0312601) 2026-03-03 publication 2026-02-17 creation International DOI Foundation (IDF) 10.25921/d74v-fj24 NOAA National Centers for Environmental Information gov.noaa.nodc:0312601 NCEI Archive Management System 0312601 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 Hajime Obata University of Tokyo obata@aori.u-tokyo.ac.jp http://www.u-tokyo.ac.jp/en/index.html HTTP University of Tokyo website Institution web page information resourceProvider University of Tokyo, Ocean Research Institute resourceProvider Hajime Obata University of Tokyo obata@aori.u-tokyo.ac.jp http://www.u-tokyo.ac.jp/en/index.html HTTP University of Tokyo website Institution web page information principalInvestigator Obata, Hajime Atmosphere and Ocean Research Institute, The University of Tokyo obata@aori.u-tokyo.ac.jp http://www.u-tokyo.ac.jp/en/index.html HTTP University of Tokyo website Institution web page information author University of Tokyo, Ocean Research Institute contributor tableDigital For biogeochemical studies on distributions and cycles of trace elements and their isotopes in the Bering Sea and subarctic Pacific, ADCP data, bathymetry, CTD data, gravity, meteorological data, navigation data and water sample data were collected. This dataset is the U.S. State Department MSR RATS U2024-026. To reveal the distributions and cycles of trace elements and their isotopes in the Bering Sea and subarctic Pacific, we have preformed marine biogeochemical studies. 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 https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0312601 Preview graphic PNG 0312601 NCEI ACCESSION NUMBER 2026-01-28 publication AIR TEMPERATURE BATHYMETRY CHLOROPHYLL CURRENT SPEED - EAST/WEST COMPONENT (U) CURRENT SPEED - NORTH/SOUTH COMPONENT (V) FLUORESCENCE INCOMING SOLAR RADIATION marine gravity field OXYGEN pH PRECIPITATION RELATIVE HUMIDITY SALINITY SOUND VELOCITY total alkalinity turbidity WATER TEMPERATURE WIND DIRECTION WIND SPEED theme NODC DATA TYPES THESAURUS ADCP anemometer barometer CTD echo sounder gravimeter Niskin bottle radiometer rain gauge salinometer thermometer instrument NODC INSTRUMENT TYPES THESAURUS chemical derived products in situ laboratory analyses meteorological physical profile theme NODC OBSERVATION TYPES THESAURUS Hakuho Maru (HAKUHO-MARU) platform NODC PLATFORM NAMES THESAURUS University of Tokyo, Ocean Research Institute dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS University of Tokyo, Ocean Research Institute dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS GEOTRACES U. S. Department of State Marine Scientific Research (MSR) project NODC PROJECT NAMES THESAURUS Bering Sea North Pacific Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication U-TOKYO/ORI > Ocean Research Institute, University of Tokyo 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 IPY-GEOTRACES > International Polar Year GEOTRACES: An international study of the biogeochemical cycles of Trace Elements and Isotopes in the Arctic and Southern Oceans MSR > U.S. Department of State Marine Scientific Research project Global Change Master Directory (GCMD) Project 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 RADIATION > INCOMING SOLAR RADIATION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC TEMPERATURE EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR INDICATORS > HUMIDITY > RELATIVE HUMIDITY EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND DIRECTION EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS > WIND SPEED EARTH SCIENCE > ATMOSPHERE > PRECIPITATION EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY EARTH SCIENCE > OCEANS > MARINE GEOPHYSICS > MARINE GRAVITY FIELD EARTH SCIENCE > OCEANS > OCEAN ACOUSTICS > ACOUSTIC VELOCITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CHLOROPHYLL EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS EARTH SCIENCE > OCEANS > OCEAN OPTICS > FLUORESCENCE EARTH SCIENCE > OCEANS > OCEAN OPTICS > TURBIDITY EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY 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 ADCP Navigation Temperature, Salinity and Depth Water sample data meteorology theme Provider Keywords ADCP > Acoustic Doppler Current Profiler ANEMOMETERS > ANEMOMETERS BAROMETERS > BAROMETERS CTD > Conductivity, Temperature, Depth ECHO SOUNDERS > ECHO SOUNDERS GRAVIMETERS NISKIN BOTTLES RADIOMETERS RAIN GAUGES > RAIN GAUGES SALINOMETERS THERMOMETERS > THERMOMETERS instrument Global Change Master Directory (GCMD) Instrument 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 Meteorological system Multi-narrow beam echo sounder Radio navigation system Shipboard acoustic doppler current profiler Shipboard gravity meter instrument Provider Instruments Ships platform Global Change Master Directory (GCMD) Platform 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 HAKUHO MARU (call sign: JDSS, ICES code: 49HH, 1989-) platform ICES/SeaDataNet Ship Codes OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > BERING SEA 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 subarctic Pacific place Provider Place Names RDMWB7 Send2NCEI Submission Package ID accessLevel: public otherRestrictions Cite as: Obata, Hajime (2026). CTD, ADCP, BATHYMETRY, and others collected from the R/V Hakuho Maru in the Bering Sea and subarctic Pacific from 2025-06-18 to 2025-07-28 (NCEI Accession 0312601). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/d74v-fj24. 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. 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. license This dataset has been dedicated to the public domain under the Creative Commons CC0 1.0 Universal (CC0 1.0) Public Domain Dedication. SPDX License: Creative Commons Zero v1.0 Universal (CC0-1.0) eng; USA utf8 environment oceans geoscientificInformation climatologyMeteorologyAtmosphere 174.1638333 -166.009333 50.93617 66.33 2025-06-18 2025-07-28 NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact 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. Originator data format 444.732 https://doi.org/10.25921/d74v-fj24 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/312601 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/312601 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0242/0312601/ 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 0312601 v1.1 was published. 2026-03-03T14:33:05Z NCEI Accession 0312601 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0312601/1.1 HTTPS NCEI Accession 0312601 v1.1 published 2026-03-03T14:33:05Z download dataset Parameter or Variable: ADCP (measured); Units: m/s; Observation Category: in situ; Sampling Instrument: Shipboard acoustic doppler current profiler; Sampling and Analyzing Method: Acoustic Doppler Current Profiler (ADCP) transmits acoustic pulses from a transducer assembly. The transducers receive backscattered sounds from small particles floating with water currents. Using the Doppler shift principle, the backscattered sound data can be converted into components of water current velocity at multiple depths. The shipboard ADCP mounted on R/V HAKUHO-MARU can measure the speed and direction of water currents for up to 128 layers. The dataset provided here is a 5-minute time average of absolute velocity data (i.e., water current velocity in geophysical coordinates) after various kinds of corrections. This data processing was carried out by DMO. Parameter or Variable: BATHYMETRY (measured); Units: m; Observation Category: in situ; Sampling Instrument: Multi-narrow beam echo sounder; Sampling and Analyzing Method: The data provided here are the bathymetric data obtained from the multibeam echo sounder system (MBES) . The system transmits the shape echo sounder beam from the transmitter and receives the beam reflected from the seabed using the hydrophone. The water depth is calculated from the travel time of the beam between the transmitter and the receiver. Having many transmitters make fan beams across the keel, this system can obtain a lot of bathymetric data on a wide angle at once.; Data Quality Method: The travel time of the beam (from the transmitter to the seabed and from the seabed to the receiver) is corrected using the vertical profile of the sound velocity obtained from the in-situ observations (see section Sound velocity profile correction) . The raw data with the low reliability such as the noise are removed using the software. Parameter or Variable: Temperature, Salinity and Depth (measured); Units: degrees C, psu and m; Observation Category: in situ; Sampling Instrument: CTD; Sampling and Analyzing Method: CTD(Conductivity-Temperature-Depth profiler) is used to observe the vertical profiles of temperature and conductivity. Usually, this system is operated with multicylinder water sampler. Observed signal is transmitted from sensor to the operation room on board using wire cable, and electric power is supplied from vessel to sensor. Parameter or Variable: marine gravity field (measured); Units: mGal; Observation Category: in situ; Sampling Instrument: Shipboard gravity meter; Sampling and Analyzing Method: The data provided here are quality-controlled absolute gravity data and free-air anomalies. The absolute gravity data are a combination of relative gravity data measured by the shipboard gravity meter and the absolute gravity data of the ports in departure and arrival.; Data Quality Method: As a quality control, low reliability data were removed. The absolute gravity values of the ports are referenced to those of the Japan Gravity Standardization Net of the Geographical Survey Institute of Japan. Parameter or Variable: meteorology (measured); Units: NA; Observation Category: in situ; Sampling Instrument: Meteorological system; Sampling and Analyzing Method: During the cruise of R/V HAKUHO MARU. Location Meteorological elements Surface temperature Current direction and velocity Water depth Data are recorded every one minute, and data file named after cruise code. Parameter or Variable: Navigation (measured); Units: NA; Observation Category: in situ; Sampling Instrument: Radio navigation system; Sampling and Analyzing Method: For meteorological data, the Navigation QCed data were collected during the cruise of R/V HAKUHO MARU. Parameter or Variable: Water sample data (measured); Units: NA; Observation Category: laboratory analysis; Sampling Instrument: salinometer; Sampling and Analyzing Method: During the cruise, seawater samples were analyzed for salinity, dissolved oxygen, chlorophyll a, pH and Total alkalinity. asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian ADCP ADCP Acoustic Doppler Current Profiler The Acoustic Doppler Current Profiler (ADCP) measures currents beneath a ship while underway. Sound signals sent from the moving ship bounce back to receivers aboard the ship. This provides a profile of water movement relative to the ship-precise modern navigation, allowing the ship's motion to be subtracted from the data. These devices are also used on moorings and profilers and, along with acoustic backscattering, measure animal biomass. Particles in the path of the sound waves, mostly plankton, reflect a small part of the sound energy back toward receivers, allowing researchers to make remote estimates of the sizes and numbers of animals present in the water column. Before the 1970's, the most technologically advanced instrument used to measure water velocity was known as a Doppler speed log. This evolved into the first commercial ADCP, produced in the mid-1970's, which used averaging. Later in the 1970's, the first vessel-mounted ADCP was developed to measure water velocity more accurately and to allow measurement in range cells over a depth profile. As instruments evolved, so did new techniques in Doppler signal processing. Initially, Doppler speed logs used simple analog signal processing methods, which are still used in some commercial speed logs today. However, the first ADCPs incorporated analog-to-digital signal conversion over a narrow communication bandwidth. Around 1990, this technique was developed into broadband signal processing. Since then, broadband ADCPs have been able to generate very accurate, real-time velocity measurements. anemometer anemometer measures wind speed An anemometer is an instrument that measures wind speed. Note that an aerovane (insttypes_id 175) is an anemometer which has a tail and a propeller to measure the speed and direction of the wind. barometer barometer Barometers are instruments for measuring atmospheric pressure; two types include mercury barometers and aneroid barometers. CTD CTD Conductivity-Temperature-Depth probe echo sounder echo sounder instrument used to determine water depth or bathymetry also known as an echosounder gravimeter gravimeter generic instrument to measure local gravity field intensity Gravity intensity and other gravimetric data are usually managed and archived at the NOAA National Geophysical Data Center (www.ngdc.noaa.gov/geomag/). Niskin bottle Niskin bottle Device for obtaining samples of seawater at a specific depth Why special entry for Niskin bottle but no entry for Nansen bottle? radiometer radiometer radiometer rain gauge rain gauge A device to measure the amount of liquid precipitation The definition of liquid precipitation is any form of water falling from the sky as rain. Rain gauge measures the amount of liquid precipitation. salinometer salinometer generic salinometer use salinometer when the instrument type used is unclear but the data include salinity measurements thermometer thermometer generic thermometer or reversing thermometer use thermometer when temperature is a data type, but the exact instrument used to measure temperature is unknown Hakuho Maru (HAKUHO-MARU) Updated information from ICES for the vessel HAKUHO MARU from JAPAN(JP). Name : HAKUHO MARU Country(s) : JAPAN(JP) (ISO Country Code) Platform Class : 31 Research vessel Synonyms: HAKUHO-MARU Call Sign : JDSS MMSI: 431010000 IMO : 8714700 Commissioned Date : 1989-05 Current Length : 100 Built : 1989-05 WOD Code: 10057 Information Sources: - http://www.marinetraffic.com/ais/shipdetails.aspx?mmsi=431010000 - http://www.shipspotting.com/gallery/photo.php?lid=1243334 - http://www.vesseltracker.com/en/Ships/Hakuho-Maru-8714700.html Confirmed by NOAA on 2015-05-19. Submitted to ICES on 2011-08-02.