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CTD, shipboard ADCP, and lowered ADCP data from the Red Sea Outflow Experiment (REDSOX) and an earlier Red Sea cruise in 2001 (NCEI Accession 0146147)


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      DateTime:  2023-11-28T17:44:47Z
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            title:  CTD, shipboard ADCP, and lowered ADCP data from the Red Sea Outflow Experiment (REDSOX) and an earlier Red Sea cruise in 2001 (NCEI Accession 0146147)
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                date:  2017-11-13
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                date:  2018-12-29
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                  Anchor:  NCEI Accession ID 0146147
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/1730 NOAA National Centers for Environmental Information
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/person/details/4893 Hartmut Peters
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/661 Earth and Space Research (ESR)
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        abstract:  This dataset is a collection of oceanographic data from the two 2001 “REDSOX” cruises in the Gulf of Aden in addition to a set of data collected in the Red Sea before REDSOX-2. Core data are from CTD/O2 and lowered ADCP systems plus shipboard ADCP measurements. Ancillary data and documentation are provided. The main objectives of REDSOX are: 1) To describe the pathways and downstream evolution of the descending outflow plumes of Red Sea Water in the western Gulf of Aden; 2) To quantify the processes that control the final depth of the equilibrated Red Sea Outflow Water; and 3) To identify the transport processes and mechanisms that advect Red Sea Outflow Water and its properties through the Gulf of Aden and into the Indian Ocean. The data from the Red Sea were taken as a piggy back onto the main experiment during the second REDSOX cruise.
        purpose:  To conduct measurements of the outflow of high salinity water from the Red Sea and its mixing with ambient waters in the Gulf of Aden.
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        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  NCEI Accession 0146147 v1.1 was published.
                dateTime:
                  DateTime:  2017-11-13T15:26:26Z
                output:  (LE_Source)
                    sourceCitation:  (CI_Citation)
                        title:  NCEI Accession 0146147 v1.1
                        date:  (CI_Date)
                            date: (inapplicable)
                            dateType:  (CI_DateTypeCode) publication
                        citedResponsibleParty:  (CI_ResponsibleParty)
                            individualName: (inapplicable)
                            contactInfo:  (CI_Contact)
                                onlineResource:  (CI_OnlineResource)
                                    linkage: https://www.ncei.noaa.gov/archive/accession/0146147/1.1
                                    protocol:  HTTPS
                                    name:  NCEI Accession 0146147 v1.1
                                    description:  published 2017-11-13T15:26:26Z
                                    function:  (CI_OnLineFunctionCode) download
                            role: (inapplicable)
            processStep:  (LE_ProcessStep)
                description:  NCEI Accession 0146147 was revised and v1.2 was published.
                rationale:  Additional metadata files were received or created for this dataset. These updates were copied into the about/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession.
                dateTime:
                  DateTime:  2018-12-29T15:03:29Z
                output:  (LE_Source)
                    sourceCitation:  (CI_Citation)
                        title:  NCEI Accession 0146147 v1.2
                        date:  (CI_Date)
                            date: (inapplicable)
                            dateType:  (CI_DateTypeCode) publication
                        citedResponsibleParty:  (CI_ResponsibleParty)
                            individualName: (inapplicable)
                            contactInfo:  (CI_Contact)
                                onlineResource:  (CI_OnlineResource)
                                    linkage: https://www.ncei.noaa.gov/archive/accession/0146147/1.2
                                    protocol:  HTTPS
                                    name:  NCEI Accession 0146147 v1.2
                                    description:  published 2018-12-29T15:03:29Z
                                    function:  (CI_OnLineFunctionCode) download
                            role: (inapplicable)
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    metadataMaintenance:  (MD_MaintenanceInformation)
        maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) asNeeded
        maintenanceNote:  Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness.
        maintenanceNote:  NCEI Accession 0146147 was revised and a new version of the archival package was published. Updates to existing archival packages may provide additional files or replace obsolete files. The latest version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession. Please see journal.txt in the /about directory for additional details on changes made.
        contact:  (CI_ResponsibleParty)
            organisationName:  NOAA National Centers for Environmental Information
            role:  (CI_RoleCode) custodian
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    acquisitionInformation:  (MI_AcquisitionInformation)
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  ADCP
            type:  ADCP
            description:  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.
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  CTD
            type:  CTD
            description:  Conductivity-Temperature-Depth probe
        platform:  (MI_Platform)
            identifier:  (MD_Identifier)
                code:  R/V MAURICE EWING
            description:  R/V; commissioned 1988; decommissioned 2005; operated by Lamont-Doherty Earth Observatory; IMO8203153
            instrument: (missing)