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          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/datatype/details/393" xlink:actuate="onRequest">turbidity</gmx:Anchor>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/datatype/details/500" xlink:actuate="onRequest">WATER DENSITY</gmx:Anchor>
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          <gmd:keyword>
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            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/insttype/details/8" xlink:actuate="onRequest">CTD</gmx:Anchor>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/insttype/details/13" xlink:actuate="onRequest">fluorometer</gmx:Anchor>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/insttype/details/73" xlink:actuate="onRequest">pressure gauge</gmx:Anchor>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/insttype/details/74" xlink:actuate="onRequest">transmissometer</gmx:Anchor>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/insttype/details/155" xlink:actuate="onRequest">turbidity sensor</gmx:Anchor>
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            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="instrument">instrument</gmd:MD_KeywordTypeCode>
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            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/obstype/details/63" xlink:actuate="onRequest">in situ</gmx:Anchor>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/obstype/details/18" xlink:actuate="onRequest">profile</gmx:Anchor>
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            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
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                <gco:CharacterString>NODC OBSERVATION TYPES THESAURUS</gco:CharacterString>
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            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="platform">platform</gmd:MD_KeywordTypeCode>
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          <gmd:keyword>
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          <gmd:keyword>
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            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="project">project</gmd:MD_KeywordTypeCode>
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      <gmd:descriptiveKeywords>
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            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/seaname/details/22" xlink:actuate="onRequest">Gulf of Mexico</gmx:Anchor>
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          <gmd:keyword>
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            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
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                <gco:CharacterString>WMO_CategoryCode</gco:CharacterString>
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      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
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          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="project">project</gmd:MD_KeywordTypeCode>
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          <gmd:thesaurusName>
            <gmd:CI_Citation>
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      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
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            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/ca477721-473b-40d7-a72b-4ffa963e48fb" xlink:actuate="onRequest">EARTH SCIENCE &gt; OCEANS &gt; BATHYMETRY/SEAFLOOR TOPOGRAPHY &gt; WATER DEPTH</gmx:Anchor>
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            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/e4aae1a4-b4d5-4b13-9cc0-c0df6234ce3b" xlink:actuate="onRequest">EARTH SCIENCE &gt; OCEANS &gt; OCEAN ACOUSTICS &gt; ACOUSTIC VELOCITY</gmx:Anchor>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/90aa8838-79bd-4b28-b518-8217e863c385" xlink:actuate="onRequest">EARTH SCIENCE &gt; OCEANS &gt; OCEAN CHEMISTRY &gt; OXYGEN</gmx:Anchor>
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            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/a60ae1b6-abfc-4905-8c09-772da7bb1a10" xlink:actuate="onRequest">EARTH SCIENCE &gt; OCEANS &gt; OCEAN OPTICS &gt; FLUORESCENCE</gmx:Anchor>
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            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/007ab607-2ee1-484d-85fb-0bfb89f18c9b" xlink:actuate="onRequest">EARTH SCIENCE &gt; OCEANS &gt; SALINITY/DENSITY &gt; DENSITY</gmx:Anchor>
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                <gmd:CI_OnlineResource>
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                  <gmd:protocol>
                    <gco:CharacterString>HTTPS</gco:CharacterString>
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                  <gmd:applicationProfile>
                    <gco:CharacterString>Web browser</gco:CharacterString>
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                  <gmd:name>
                    <gco:CharacterString>Descriptive Information</gco:CharacterString>
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                  <gmd:description>
                    <gco:CharacterString>Navigate directly to the URL for a descriptive web page with download links.</gco:CharacterString>
                  </gmd:description>
                  <gmd:function>
                    <gmd:CI_OnLineFunctionCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode>
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                <gmd:CI_OnlineResource>
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                  <gmd:protocol>
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                  <gmd:name>
                    <gco:CharacterString>HTTPS</gco:CharacterString>
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                  <gmd:description>
                    <gco:CharacterString>Navigate directly to the URL for data access and direct download.</gco:CharacterString>
                  </gmd:description>
                  <gmd:function>
                    <gmd:CI_OnLineFunctionCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="download">download</gmd:CI_OnLineFunctionCode>
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              </gmd:onLine>
              <gmd:onLine>
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                  <gmd:protocol>
                    <gco:CharacterString>FTP</gco:CharacterString>
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                  </gmd:applicationProfile>
                  <gmd:name>
                    <gco:CharacterString>FTP</gco:CharacterString>
                  </gmd:name>
                  <gmd:description>
                    <gco:CharacterString>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).</gco:CharacterString>
                  </gmd:description>
                  <gmd:function>
                    <gmd:CI_OnLineFunctionCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="download">download</gmd:CI_OnLineFunctionCode>
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            </gmd:MD_DigitalTransferOptions>
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                        <gmd:CI_Date>
                          <gmd:date gco:nilReason="inapplicable" />
                          <gmd:dateType>
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                          <gmd:contactInfo>
                            <gmd:CI_Contact>
                              <gmd:onlineResource>
                                <gmd:CI_OnlineResource>
                                  <gmd:linkage>
                                    <gmd:URL>https://www.ncei.noaa.gov/archive/accession/0159187/1.1</gmd:URL>
                                  </gmd:linkage>
                                  <gmd:protocol>
                                    <gco:CharacterString>HTTPS</gco:CharacterString>
                                  </gmd:protocol>
                                  <gmd:name>
                                    <gco:CharacterString>NCEI Accession 0159187 v1.1</gco:CharacterString>
                                  </gmd:name>
                                  <gmd:description>
                                    <gco:CharacterString>published 2017-01-24T13:03:20Z</gco:CharacterString>
                                  </gmd:description>
                                  <gmd:function>
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                                  </gmd:function>
                                </gmd:CI_OnlineResource>
                              </gmd:onlineResource>
                            </gmd:CI_Contact>
                          </gmd:contactInfo>
                          <gmd:role gco:nilReason="inapplicable" />
                        </gmd:CI_ResponsibleParty>
                      </gmd:citedResponsibleParty>
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      <gmd:lineage>
        <gmd:LI_Lineage>
          <gmd:processStep>
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              <gmd:description>
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            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Data Type: PRESSURE - WATER [HYDROSTATIC PRESSURE] (measured); Units: db; Observation Type: in situ; Sampling Instrument: pressure gauge</gco:CharacterString>
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          </gmd:processStep>
          <gmd:processStep>
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              <gmd:description>
                <gco:CharacterString>Data Type: TEMPERATURE [WATER TEMPERATURE] (measured); Units: degrees Celsius; Observation Type: in situ; Sampling Instrument: CTD</gco:CharacterString>
              </gmd:description>
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          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
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                <gco:CharacterString>Data Type: CONDUCTIVITY (measured); Units: Siemens per meter; Observation Type: in situ; Sampling Instrument: CTD</gco:CharacterString>
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          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Data Type: WATER DENSITY (measured); Units: kg/m^3; Observation Type: in situ; Sampling Instrument: CTD</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Data Type: Fluorescence (measured); Units: mg/m^-3; Observation Type: in situ; Sampling Instrument: Flurometer</gco:CharacterString>
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          </gmd:processStep>
          <gmd:processStep>
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                <gco:CharacterString>Data Type: turbidity (measured); Units: meter; Observation Type: in situ; Sampling Instrument: Turbidity Meter</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Data Type: Transmission (measured); Units: percent; Observation Type: in situ; Sampling Instrument: transmissometer</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Data Type: SOUND VELOCITY (measured); Units: m/s; Observation Type: in situ; Sampling Instrument: CTD</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Data Type: SALINITY (calculated); Units: psu; Observation Type: in situ; Sampling Instrument: CTD</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Data Type: OXYGEN (measured); Units: mg/l; Observation Type: in situ; Sampling Instrument: CTD</gco:CharacterString>
              </gmd:description>
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  <gmd:metadataMaintenance>
    <gmd:MD_MaintenanceInformation>
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        <gmd:MD_MaintenanceFrequencyCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_MaintenanceFrequencyCode" codeListValue="asNeeded">asNeeded</gmd:MD_MaintenanceFrequencyCode>
      </gmd:maintenanceAndUpdateFrequency>
      <gmd:maintenanceNote>
        <gco:CharacterString>Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness.</gco:CharacterString>
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            <gco:CharacterString>NOAA National Centers for Environmental Information</gco:CharacterString>
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        </gmd:CI_ResponsibleParty>
      </gmd:contact>
    </gmd:MD_MaintenanceInformation>
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  <gmi:acquisitionInformation>
    <gmi:MI_AcquisitionInformation id="AMS">
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_bee7">
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              <gmd:code>
                <gco:CharacterString>CTD</gco:CharacterString>
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          <gmi:type>
            <gco:CharacterString>CTD</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>Conductivity-Temperature-Depth probe</gco:CharacterString>
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      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_bee2">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
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          <gmi:type>
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          <gmi:description>
            <gco:CharacterString>fluorometer</gco:CharacterString>
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      <gmi:instrument>
        <gmi:MI_Instrument id="inst_bea6">
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          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>pressure gauge</gco:CharacterString>
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          <gmi:description>
            <gco:CharacterString>pressure gauge

pressure gauge used to measure water pressure for use in NODC File
Alias F017</gco:CharacterString>
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      <gmi:instrument>
        <gmi:MI_Instrument id="inst_bea5">
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          <gmi:type>
            <gco:CharacterString>transmissometer</gco:CharacterString>
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          <gmi:description>
            <gco:CharacterString>transmissometer

Instrument used to measure transmissivity in NODC File Alias F022.</gco:CharacterString>
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      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_be74">
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            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>turbidity sensor</gco:CharacterString>
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          <gmi:type>
            <gco:CharacterString>turbidity sensor</gco:CharacterString>
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          <gmi:description>
            <gco:CharacterString>Measures the turbidity of water

Turbidity sensors measure the amount of light that is scattered by suspended solids in a liquid, such as water. When the concentration of total suspended solids (TSS) and total dissolved solids (TDS) in a liquid increase, the turbidity also increases.</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
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      <gmi:platform>
        <gmi:MI_Platform id="plat_b0ff">
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                <gco:CharacterString>WEATHERBIRD II</gco:CharacterString>
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          <gmi:description>
            <gco:CharacterString>Flag: United States of America
Vessel Type: Research Vessel
IMO:
DOB: 198201
Institution: Bermuda Biological Station for Research Inc
Former Names: WEATHERBIRD (1989); AUNT BEA
Citations: 1. Lloyd's Register of Ships 2006-2007; 2. The Universal Licensing System of the U.S. Federal Communications Commission</gco:CharacterString>
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          <gmi:instrument gco:nilReason="missing" />
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