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                    <gco:CharacterString>Web browser</gco:CharacterString>
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                  <gmd:name>
                    <gco:CharacterString>Descriptive Information</gco:CharacterString>
                  </gmd:name>
                  <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>
                  <gmd:linkage>
                    <gmd:URL>https://www.ncei.noaa.gov/archive/accession/download/303909</gmd:URL>
                  </gmd:linkage>
                  <gmd:protocol>
                    <gco:CharacterString>HTTPS</gco:CharacterString>
                  </gmd:protocol>
                  <gmd:applicationProfile>
                    <gco:CharacterString>Web browser</gco:CharacterString>
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                  <gmd:name>
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                  </gmd:name>
                  <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>
                  </gmd:function>
                </gmd:CI_OnlineResource>
              </gmd:onLine>
              <gmd:onLine>
                <gmd:CI_OnlineResource>
                  <gmd:linkage>
                    <gmd:URL>ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0237/0303909/</gmd:URL>
                  </gmd:linkage>
                  <gmd:protocol>
                    <gco:CharacterString>FTP</gco:CharacterString>
                  </gmd:protocol>
                  <gmd:applicationProfile>
                    <gco:CharacterString>Any FTP client</gco:CharacterString>
                  </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>
                  </gmd:function>
                </gmd:CI_OnlineResource>
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            </gmd:MD_DigitalTransferOptions>
          </gmd:distributorTransferOptions>
        </gmd:MD_Distributor>
      </gmd:distributor>
    </gmd:MD_Distribution>
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        <gmd:DQ_Scope>
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                <gco:CharacterString>NCEI Accession 0303909 v1.1 was published.</gco:CharacterString>
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                        <gco:CharacterString>NCEI Accession 0303909 v1.1</gco:CharacterString>
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                          <gmd:date gco:nilReason="inapplicable" />
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                        </gmd:CI_Date>
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                        <gmd:CI_ResponsibleParty>
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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/0303909/1.1</gmd:URL>
                                  </gmd:linkage>
                                  <gmd:protocol>
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                                  <gmd:name>
                                    <gco:CharacterString>NCEI Accession 0303909 v1.1</gco:CharacterString>
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                                </gmd:CI_OnlineResource>
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    <gmd:DQ_DataQuality>
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            <gmd:MD_ScopeCode codeList="http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_ScopeCode" codeListValue="dataset">dataset</gmd:MD_ScopeCode>
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                <gco:CharacterString>Parameter or Variable: Ice thickness (measured);
Units: meter;
Observation Category: in situ;
Sampling Instrument: Shallow Water Ice Profiling Sonar (SWIPS);
Sampling and Analyzing Method: The ice measurements were collected using Shallow Water Ice Profiling Sonar (SWIPS) profilers at 1 Hz.;
Data Quality Method: Expert review.</gco:CharacterString>
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          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: WAVE HEIGHT - SIGNIFICANT (measured);
Units: meter;
Observation Category: in situ;
Sampling Instrument: ASL SWIPS ice profiler;
Sampling and Analyzing Method: Continuous measurements at 1 Hz

Ice thickness is estimated by ASL software (see reference) and averaged over 1 hour intervals


All parameters are computed over burst periods.;
Data Quality Method: Description of processing in the ASL reference

Negative thickness estimates are removed in averaging, along with estimates with high draft error values (thickness&lt;2xdraft error).</gco:CharacterString>
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          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: WAVE PERIOD - DOMINANT (measured);
Units: seconds;
Observation Category: in situ;
Sampling Instrument: Nortek AWAC current profiler;
Sampling and Analyzing Method: Burst of 1024 observations at 1 Hz every hour

Parameters estimated by instrument software

All parameters are computed over burst periods;
Data Quality Method: Measurements checked internally by software</gco:CharacterString>
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  <gmd:metadataMaintenance>
    <gmd:MD_MaintenanceInformation>
      <gmd:maintenanceAndUpdateFrequency>
        <gmd:MD_MaintenanceFrequencyCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_MaintenanceFrequencyCode" codeListValue="asNeeded">asNeeded</gmd:MD_MaintenanceFrequencyCode>
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      <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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      <gmd:contact>
        <gmd:CI_ResponsibleParty>
          <gmd:organisationName>
            <gco:CharacterString>NOAA National Centers for Environmental Information</gco:CharacterString>
          </gmd:organisationName>
          <gmd:role>
            <gmd:CI_RoleCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="custodian">custodian</gmd:CI_RoleCode>
          </gmd:role>
        </gmd:CI_ResponsibleParty>
      </gmd:contact>
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  <gmi:acquisitionInformation>
    <gmi:MI_AcquisitionInformation id="AMS">
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_bffe">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>Acoustic Wave and Current Profiler (AWAC)</gco:CharacterString>
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          <gmi:type>
            <gco:CharacterString>Acoustic Wave and Current Profiler (AWAC)</gco:CharacterString>
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          <gmi:description>
            <gco:CharacterString>The Acoustic Wave and Current profiler (AWAC) performs measurement of wave height, wave direction and the full current profile using the unique acoustic surface tracking (AST) feature.

The system can resolve waves from 1 to 100 s. AWAC provides current profiler and a wave directional system in one unit. AWAC can measure the current speed and direction in 1-meter thick layers from the bottom to the surface. Possible as powered from network also as stand-alone, as bottom moored or mounted on subsurface buoys. Wave direction is calculated by combining AST with orbital velocity measurements in an array near the surface.</gco:CharacterString>
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      <gmi:instrument>
        <gmi:MI_Instrument id="inst_bffd">
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                <gco:CharacterString>Shallow Water Ice Profiler Sonar (SWIPS)</gco:CharacterString>
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          <gmi:type>
            <gco:CharacterString>Shallow Water Ice Profiler Sonar (SWIPS)</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>https://www.iahr.org/library/infor?pid=19463
Since first introduced, in 2004, into annual river ice monitoring programs on the Peace River, Shallow Water Ice Profiling Sonar (SWIPS) has been developed for quantitative monitoring andstudy of ice in river, lake and laboratory environments.</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
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                <gco:CharacterString>moorings</gco:CharacterString>
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            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:description>
            <gco:CharacterString>entry created as MOORINGS OF UNITED STATES, but has been used as a generic MOORINGS entry.</gco:CharacterString>
          </gmi:description>
          <gmi:instrument gco:nilReason="missing" />
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