Metadata:
  Identification_Information:
    Citation:
      Citation_Information:
        Originator: U.S. Geological Survey
        Originator: Coastal and Marine Geology Program
        Publication_Date: 2013
        Title: p194ar.m77t and p194ar.h77t: MGD77T data and header files for single-beam bathymetry data for field activity P-1-94-AR in Arctic Ocean from 07/25/1994 to 08/30/1994
        Geospatial_Data_Presentation_Form: tab-delimited ASCII text files
        Publication_Information:
          Publication_Place: St. Petersburg, FL
          Publisher: U.S. Geological Survey
        Online_Linkage: http://pubs.usgs.gov/ds/757/data/m77t/p194ar.m77t
        Larger_Work_Citation:
          Citation_Information:
            Originator: Heather A. Schreppel
            Originator: Carolyn H. Degnan
            Originator: Dan R. Metzger
            Originator: Shawn V. Dadisman
            Publication_Date: 2013
            Title: Archive of U.S. Geological Survey selected single-beam bathymetry datasets, 1969-2000
            Edition: 1.0
            Geospatial_Data_Presentation_Form: Digital Document
            Series_Information:
              Series_Name: U.S. Geological Survey Data Series
              Issue_Identification: 757
            Publication_Information:
              Publication_Place: St. Petersburg, FL
              Publisher: U.S. Geological Survey
            Online_Linkage: http://pubs.usgs.gov/ds/757
    Description:
      Abstract:
        Single-beam bathymetry data along with SINS navigation data was collected as part of the U.S. Geological Survey cruise P-1-94-AR. The cruise was conducted in Monterey Bay from July 25 to August 30, 1994. The chief scientist was Art Grantz from the USGS Coastal and Marine Geology office in Menlo Park, CA.
        The overall purpose of this study was to study climatic history of the western Arctic Ocean basin. The geophysical source is unknown.
        These data are reformatted from space-delimited ASCII text files located in the Coastal and Marine Geology Program (CMGP) InfoBank field activity catalog at http://walrus.wr.usgs.gov/infobank/p/p194ar/html/p-1-94-ar.meta.html into MGD77T format provided by the NOAA's National Geophysical Data Center(NGDC). The MGD77T format includes a header (documentation) file (.h77t) and a data file (.m77t). More information regarding this format can be found in the publication listed in the Cross_reference section of this metadata file.
      Purpose: These data and information are intended for science researchers,students, policy makers, and general public. These data are not to be used for navigation purposes. The data are reformatted into MGD77T standard format for inclusion into NOAA's NGDC geophysical database. From there the data will be made available to GeoMapApp (http://www.geomapapp.org/) and Virtual Ocean (http://www.virtualocean.org/) Earth-browsing software. Access to the data is also provided via the USGS Coastal and Marine Geoscience Data System (http://cmgds.marine.usgs.gov/).
      Supplemental_Information:
        The navigation data are collected using a Shipboard Integrated Navigation System (SINS). used Transit satellite navigation and a number of subsystems that were used in dead reckoning between satellite fixes. These included Doppler sonar, speed-of-sound velocimeter, water temperature sensor, gyrocompass, electromagnetic speed log, radionavigation and other subsystems. SINS was highly variable and at best there was a 50 meters (m) accuracy.
        The Data Acquisition, Processing, and Storage (DAPS) group performs a number of processing steps to the navigation data once it is collected which can vary by cruise. These steps are outlined within the header information in each individual digital navigation (.0xx, .6xx) space-delimited ASCII data file. The header information rows are indicated by lines beginning with the character "!". The single-beam bathymetry data are collected both digitally and as analog records with an unknown system. The bathymetry datasets were commonly processed using three programs: (A) Batred, which calculates depth from travel times; (B) nosamebathy, which eliminates identical adjacent bathymetry values; and (C) nozerobathy, which removes records with a depth value of "0.0". However, not all of the datasets included in this report were processed with one or more of these programs. If the data was not run through these programs it was reformatted using the most recent "best file" on InfoBank, often these were categorized by InfoBank as raw bathymetry files. Details about which processing steps were taken by the DAPS group can be found in the header information of the bathymetry and navigation ASCII files downloaded from InfoBank.
        Prior to reformatting the data into MGD77T format the "best" bathymetry and navigation files from InfoBank were edited to remove the header information and reformatted using Excel 2010 to separate the data into columns based on tabs. Next the bathymetry and navigation files were merged based on time and latitude and longitude. The combined navigation and bathymetry was saved as a .txt file. This combined bathymetry and navigation file was used as an input file into the GEODAS ReFormat to MDG77T program developed by NOAA's NGDC. The program outputs the reformatted data as a tab-delimited .m77t file. The program is available for use at: http://www.ngdc.noaa.gov/mgg/gdas/gx_announce.Html. For information regarding fields found within the MGD77T files, please refer to the publication, Hittelman and others (2010), found within the Cross-reference section of this metadata file.
        Each MGD77T data file also has an accompanying header file (.h77t). The fields within these header files are also defined in the aforementioned publication. Fields are populated based on InfoBank metadata records, digital data file headers, and accompanying publications (often cruise reports) for the survey. If a field is unknown or did not apply to the dataset it is intentionally left blank.
    Time_Period_of_Content:
      Time_Period_Information:
        Range_of_Dates/Times:
          Beginning_Date: 19940725
          Ending_Date: 19940830
      Currentness_Reference: ground condition
    Status:
      Progress: Complete
      Maintenance_and_Update_Frequency: None planned
    Spatial_Domain:
      Bounding_Coordinates:
        West_Bounding_Coordinate: 10.30551
        East_Bounding_Coordinate: -165.42616
        North_Bounding_Coordinate: 89.98766
        South_Bounding_Coordinate: 64.39064
    Keywords:
      Theme:
        Theme_Keyword_Thesaurus: USGS Metadata Identifier
        Theme_Keyword: USGS:e90b1a1c-f1a1-493f-bef1-0cc211fa16e7
      Theme:
        Theme_Keyword_Thesaurus: ISO 19115 Topic Category
        Theme_Keyword: geoscientificinformation
        Theme_Keyword: oceans
      Theme:
        Theme_Keyword_Thesaurus: None
        Theme_Keyword: Marine Geology
        Theme_Keyword: Marine Geophysics
        Theme_Keyword: Single-beam Bathymetry
        Theme_Keyword: Water Depth
        Theme_Keyword: Seafloor Topography
      Theme:
        Theme_Keyword_Thesaurus: Data Categories for Marine Planning
        Theme_Keyword: distributions
        Theme_Keyword: bathymetry and elevation
      Theme:
        Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) Keywords
        Theme_Keyword: single-beam echo sounder
        Theme_Keyword: marine geophysics
      Theme:
        Theme_Keyword_Thesaurus: USGS Thesaurus
        Theme_Keyword: single-beam echo sounder
        Theme_Keyword: bathymetry measurement
        Theme_Keyword: bathymetry
        Theme_Keyword: marine geophysics
      Place:
        Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
        Place_Keyword: Arctic Ocean
        Place_Keyword: Pacific Ocean
        Place_Keyword: State of Alaska
    Access_Constraints: None. These data are held in the public domain.
    Use_Constraints:
      This information is not intended for navigational purposes.

      Read and fully comprehend the metadata prior to data use. Uses of these
      data should not violate the spatial resolution of the data. Where
      these data are used in combination with other data of different resolution,
      the resolution of the combined output will be limited by the lowest
      resolution of all the data.

      Acknowledge the U.S. Geological Survey in products derived from these data.
      Share data products developed using these data with the U.S. Geological
      Survey.
    Point_of_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Heather A. Schreppel
          Contact_Organization: Cherokee Nation Technology Solutions, contracted to U.S. Geological Survey
        Contact_Position: IT Management Specialist/Database Support Assistant
        Contact_Address:
          Address_Type: mailing and physical
          Address: 600 4th Street South
          City: St. Petersburg
          State_or_Province: FL
          Postal_Code: 33701
          Country: USA
        Contact_Voice_Telephone: (727) 803-8747, ext. 3013
        Contact_Electronic_Mail_Address: hschreppel@usgs.gov
    Data_Set_Credit: Art Grantz (Chief Scientist, USGS Western Region);
    Cross_Reference:
      Citation_Information:
        Originator: Hittelman, Allen M., Groman, Robert C., Haworth, Richard T., Holcombe, Troy L., McHendrie, Graig, Smith, Stuart M., and Metzger, Dan R.
        Publication_Date: 2010
        Title: The marine geophysical data exchange format - MGD77 / MGD77T
        Publication_Information:
          Publication_Place: Boulder, CO
          Publisher: National Geophysical Data Center, National Oceanic and Atmospheric Administration
        Other_Citation_Details: 25 p.
        Online_Linkage: http://www.ngdc.noaa.gov/mgg/dat/geodas/docs/mgd77.pdf
  Data_Quality_Information:
    Attribute_Accuracy:
      Attribute_Accuracy_Report: The validity or accuracy of bathymetry and navigation data is highly qualitative and depends on equipment and operating condition variables. Data quality is unknown, MGD77T files were formatted from InfoBank files identified as best available version.
    Logical_Consistency_Report: This data set is from one field activity with unknown instrument calibrations. Processed bathymetric depths were spot checked based on latitude and longitude against the Global Multi-Resolution Topography (GMRT) grid within GeoMapApp to ensure reasonable values.
    Completeness_Report:
      Start and end date/times of data according to DAPS group. Reasons for gaps in data varies by cruise, see InfoBank for more details.
      >Navigation Data (p-1-94-ar.050 [SINS])
      >YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
      >199407250440000    199407250445000
      >199407250500000    199407250605000
      >199407251435000    199407261810000
      >199407261835000    199407280725000
      >199407280735000    199407282100000
      >199407282110000    199407290435000
      >199407290535000    199407300840000
      >199407301145000    199408011000000
      >199408011630000    199408011720000
      >199408011800000    199408021000000
      >199408021015000    199408041420000
      >199408041430000    199408050840000
      >199408050855000    199408051140000
      >199408051155000    199408082230000
      >199408082245000    199408090050000
      >199408090100000    199408090425000
      >199408090440000    199408091000000
      >199408091010000    199408091700000
      >199408091800000    199408101250000
      >199408101350000    199408110830000
      >199408110840000    199408111210000
      >199408111230000    199408111640000
      >199408111650000    199408111710000
      >199408111720000    199408111805000
      >199408111815000    199408120505000
      >199408120515000    199408130635000
      >199408140005000    199408140835000
      >199408140845000    199408141235000
      >199408141700000    199408141700000
      >199408141710000    199408151120000
      >199408151140000    199408170610000
      >199408170650000    199408190330000
      >199408190355000    199408192355000
      >199408200005000    199408212355000
      >199408220015000    199408222310000
      >199408230130000    199408250000000
      >199408250015000    199408251610000
      >199408251635000    199408270000000
      >199408270800000    199408300000000
      >YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
      >Bathymetry Data (p-1-94-ar.302_050)
      >YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
      >199407251930000    199407251930000
      >199407252205000    199407252330000
      >199407260145000    199407260235000
      >199407260250000    199407260255000
      >199407261805000    199407261805000
      >199407261850000    199407261905000
      >199407261915000    199407262025000
      >199407262035000    199407262145000
      >199407262210000    199407262330000
      >199407262340000    199407270000000
      >199407270025000    199407270345000
      >199407270525000    199407280725000
      >199407280735000    199407280920000
      >199407280930000    199407281455000
      >199407281505000    199407282100000
      >199407282110000    199407282250000
      >199407282300000    199407290435000
      >199407290535000    199407290705000
      >199407291235000    199407291250000
      >199407291625000    199407300840000
      >199407301145000    199407301235000
      >199407301925000    199407311245000
      >199407311255000    199407311305000
      >199407311345000    199408011000000
      >199408011630000    199408011720000
      >199408011800000    199408020945000
      >199408020955000    199408021000000
      >199408021015000    199408021115000
      >199408021125000    199408041420000
      >199408041430000    199408050840000
      >199408050855000    199408051140000
      >199408051155000    199408060745000
      >199408060755000    199408061125000
      >199408061135000    199408080325000
      >199408080335000    199408082230000
      >199408082245000    199408090030000
      >199408090040000    199408090050000
      >199408090100000    199408090425000
      >199408090440000    199408091000000
      >199408091010000    199408091700000
      >199408092020000    199408100840000
      >199408100850000    199408100900000
      >199408100915000    199408101250000
      >199408101350000    199408102230000
      >199408102240000    199408102240000
      >199408102255000    199408110830000
      >199408110840000    199408111210000
      >199408111230000    199408111800000
      >199408111815000    199408111820000
      >199408111830000    199408120505000
      >199408120515000    199408120630000
      >199408120640000    199408120730000
      >199408120740000    199408121015000
      >199408121025000    199408121610000
      >199408121620000    199408121810000
      >199408121820000    199408121925000
      >199408121935000    199408122005000
      >199408122020000    199408122030000
      >199408122050000    199408122105000
      >199408122115000    199408122115000
      >199408122130000    199408122150000
      >199408122200000    199408122220000
      >199408122230000    199408122315000
      >199408122325000    199408122330000
      >199408122340000    199408122345000
      >199408122355000    199408130000000
      >199408130020000    199408130025000
      >199408130035000    199408130045000
      >199408130055000    199408130055000
      >199408130105000    199408130105000
      >199408130115000    199408130115000
      >199408130125000    199408130125000
      >199408130135000    199408130135000
      >199408130150000    199408130155000
      >199408130210000    199408130230000
      >199408130240000    199408130635000
      >YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
    Positional_Accuracy:
      Horizontal_Positional_Accuracy:
        Horizontal_Positional_Accuracy_Report: Unspecified
      Vertical_Positional_Accuracy:
        Vertical_Positional_Accuracy_Report: Unspecified
    Lineage:
      Process_Step:
        Process_Description:
          Below are the details about which processing steps were taken by the DAPS group that can be found in the header information of the ASCII files downloaded from InfoBank.
          Navigation Data
          >Converted to time format with year at start.
          >
        Process_Date: 20001031
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
              Contact_Person: Carolyn H. Degnan
            Contact_Position: Geophysicist
            Contact_Address:
              Address_Type: mailing and physical address
              Address: USGS Pacific Coastal & Marine Science Center, 400 Natural Bridges Drive
              City: Santa Cruz
              State_or_Province: CA
              Postal_Code: 95060-5762
              Country: USA
            Contact_Voice_Telephone: (831) 460-7452
            Contact_Facsimile_Telephone: (831) 427-4748
            Contact_Electronic_Mail_Address: infobank@octopus.wr.usgs.gov
      Process_Step:
        Process_Description:
          Below are the details about which processing steps were taken by the DAPS group that can be found in the header information of the ASCII files downloaded from InfoBank.
          Bathymetry Data
          >10/31/1998  /tiger/p/p194ar/bath/p-1-94-ar.302_050
          >/bear/programs/edit/automerge/automerge
          >
          >Input was...
          >Converted to time format with year at start.
          >
          >03/22/95 CLINT MOG$DUB1:[ARCHIVE.P.P194AR.BATH]P194AR.302;2
          >MOG$DUB0:[PROGRAMS.PLT.GRAPHED.EXE]GRAPHED.EXE;
          >Raw depth (bathymetry) data
          >Deleted significant spikes and sections of constant values.
          >
          >Input was...
          >Converted to time format with year at start.
          >
          >time, lat, long, time(sec) to nearest nav fix, data values
        Process_Date: 19981031
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: U.S. Geological Survey (USGS), Coastal and Marine Geology (CMG)
              Contact_Person: Carolyn H. Degnan
            Contact_Position: Geophysicist
            Contact_Address:
              Address_Type: mailing and physical address
              Address: USGS Pacific Coastal & Marine Science Center, 400 Natural Bridges Drive
              City: Santa Cruz
              State_or_Province: CA
              Postal_Code: 95060-5762
              Country: USA
            Contact_Voice_Telephone: (831) 460-7452
            Contact_Facsimile_Telephone: (831) 427-4748
            Contact_Electronic_Mail_Address: infobank@octopus.wr.usgs.gov
      Process_Step:
        Process_Description: A navigation file identified as the best available version in InfoBank for this cruise was copied and saved as an ASCII text file to be combined with the best available bathymetry file for processing to MGD77T format. For details regarding processing steps performed on these best available files from InfoBank, please see the header information within the original files at http://walrus.wr.usgs.gov/infobank/ and previous processing steps.
        Source_Used_Citation_Abbreviation: p-1-94-ar.050.txt
        Process_Date: 2012
        Source_Produced_Citation_Abbreviation: p194arnav.txt
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: Cherokee Nation Technology Solutions, contracted to the U.S. Geological Survey
              Contact_Person: Heather A. Schreppel
            Contact_Position: IT Management Specialist/Database Support Assistant
            Contact_Address:
              Address_Type: mailing and physical address
              Address: 600 4th Street South
              City: St. Petersburg
              State_or_Province: FL
              Postal_Code: 33701
              Country: USA
            Contact_Voice_Telephone: 727-803-8747 ext. 3013
            Contact_Electronic_Mail_Address: hschreppel@usgs.gov
      Process_Step:
        Process_Description: A bathymetry file identified as the best available version in InfoBank for this cruise was copied and saved as an ASCII text file to be combined with the best available navigation file for processing to MGD77T format. For details regarding processing steps performed on these best available files from InfoBank, please see the header information within the original files at http://walrus.wr.usgs.gov/infobank/.
        Source_Used_Citation_Abbreviation: p-1-94-ar.302_050.txt
        Process_Date: 2012
        Source_Produced_Citation_Abbreviation: p194arbathy.txt
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: Cherokee Nation Technology Solutions, contracted to the U.S. Geological Survey
              Contact_Person: Heather A. Schreppel
            Contact_Position: IT Management Specialist/Database Support Assistant
            Contact_Address:
              Address_Type: mailing and physical address
              Address: 600 4th Street South
              City: St. Petersburg
              State_or_Province: FL
              Postal_Code: 33701
              Country: USA
            Contact_Voice_Telephone: 727-803-8747 ext. 3013
            Contact_Electronic_Mail_Address: hschreppel@usgs.gov
      Process_Step:
        Process_Description: The best available bathymetry and navigation text files were concatenated into one tab-delimited file using Excel 2010 and several Visual Basic Applications (VBA) macros. InfoBank header information is removed and text is broken into columns and the rows are combined based on the presence of the same values in the time and latitude and longitude columns.
        Source_Used_Citation_Abbreviation: p194arbathy.txt, p194arnav.txt
        Process_Date: 2012
        Source_Produced_Citation_Abbreviation: p194arall.txt
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: Cherokee Nation Technology Solutions, contracted to the U.S. Geological Survey
              Contact_Person: Heather A. Schreppel
            Contact_Position: IT Management Specialist/Database Support Assistant
            Contact_Address:
              Address_Type: mailing and physical address
              Address: 600 4th Street South
              City: St. Petersburg
              State_or_Province: FL
              Postal_Code: 33701
              Country: USA
            Contact_Voice_Telephone: 727-803-8747 ext. 3013
            Contact_Electronic_Mail_Address: hschreppel@usgs.gov
      Process_Step:
        Process_Description: The combined bathymetry and navigation file was used as an input file into the GEODAS ReFormat to MDG77T program developed by NOAA's NGDC. The program outputs the reformatted data as a tab-delimited .m77t file. The program is available for use at: http://www.ngdc.noaa.gov/mgg/gdas/gx_announce.Html
        Source_Used_Citation_Abbreviation: p194arall.txt
        Process_Date: 2012
        Source_Produced_Citation_Abbreviation: p194ar.m77t
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: Cherokee Nation Technology Solutions, contracted to the U.S. Geological Survey
              Contact_Person: Heather A. Schreppel
            Contact_Position: IT Management Specialist/Database Support Assistant
            Contact_Address:
              Address_Type: mailing and physical address
              Address: 600 4th Street South
              City: St. Petersburg
              State_or_Province: FL
              Postal_Code: 33701
              Country: USA
            Contact_Voice_Telephone: 727-803-8747 ext. 3013
            Contact_Electronic_Mail_Address: hschreppel@usgs.gov
      Process_Step:
        Process_Description: To create the accompanying header files (.h77t), an excel spreadsheet was supplied from NGDC with already populated required field names. For information for header field requirements and definitions see: http://www.ngdc.noaa.gov/mgg/dat/geodas/docs/mgd77.pdf. When creating a header file for each cruise, fields were populated in the header spreadsheet based on InfoBank metadata records, digital data file headers, and accompanying publications (often cruise reports) for the survey. If a field was unknown or did not apply to the dataset it was intentionally left blank.
        Source_Used_Citation_Abbreviation: http://walrus.wr.usgs.gov/infobank/p/p194ar/html/p-1-94-ar.meta.html
        Process_Date: 2012
        Source_Produced_Citation_Abbreviation: p194ar.h77t
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: Cherokee Nation Technology Solutions, contracted to the U.S. Geological Survey
              Contact_Person: Heather A. Schreppel
            Contact_Position: IT Management Specialist/Database Support Assistant
            Contact_Address:
              Address_Type: mailing and physical address
              Address: 600 4th Street South
              City: St. Petersburg
              State_or_Province: FL
              Postal_Code: 33701
              Country: USA
            Contact_Voice_Telephone: 727-803-8747 ext. 3013
            Contact_Electronic_Mail_Address: hschreppel@usgs.gov
      Process_Step:
        Process_Description: Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog.
        Process_Date: 20161229
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: U.S. Geological Survey
              Contact_Person: Alan O. Allwardt
            Contact_Position: Contractor -- Information Specialist
            Contact_Address:
              Address_Type: mailing and physical address
              Address: 2885 Mission Street
              City: Santa Cruz
              State_or_Province: CA
              Postal_Code: 95060
            Contact_Voice_Telephone: 831-460-7551
            Contact_Facsimile_Telephone: 831-427-4748
            Contact_Electronic_Mail_Address: aallwardt@usgs.gov
      Process_Step:
        Process_Description: Added keywords section with USGS persistent identifier as theme keyword.
        Process_Date: 20201013
        Process_Contact:
          Contact_Information:
            Contact_Organization_Primary:
              Contact_Organization: U.S. Geological Survey
              Contact_Person: VeeAnn A. Cross
            Contact_Position: Marine Geologist
            Contact_Address:
              Address_Type: Mailing and Physical
              Address: 384 Woods Hole Road
              City: Woods Hole
              State_or_Province: MA
              Postal_Code: 02543-1598
            Contact_Voice_Telephone: 508-548-8700 x2251
            Contact_Facsimile_Telephone: 508-457-2310
            Contact_Electronic_Mail_Address: vatnipp@usgs.gov
  Spatial_Data_Organization_Information:
    Indirect_Spatial_Reference: Arctic Ocean from 07/25/1994 to 08/30/1994
    Direct_Spatial_Reference_Method: Point
    Point_and_Vector_Object_Information:
      SDTS_Terms_Description:
        SDTS_Point_and_Vector_Object_Type: Point
  Spatial_Reference_Information:
    Horizontal_Coordinate_System_Definition:
      Geographic:
        Latitude_Resolution: 0.000001
        Longitude_Resolution: 0.000001
        Geographic_Coordinate_Units: Decimal degrees
      Geodetic_Model:
        Horizontal_Datum_Name: D_WGS_1984
        Ellipsoid_Name: WGS_1984
        Semi-major_Axis: 6378137.000000
        Denominator_of_Flattening_Ratio: 298.25722210100002
  Entity_and_Attribute_Information:
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: p194ar.m77t
        Entity_Type_Definition: MGD77T single-beam bathymetry data file for P194AR
        Entity_Type_Definition_Source: NOAA's National Geophysical Data Center, See Hittelman and others (2010) Cross_Reference section above for details about the MGD77T format and citation information.
      Attribute:
        Attribute_Label: SURVEY_ID
        Attribute_Definition: Survey identifier supplied by the contributing organization
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: This identifier varies in format and is supplied by the contributing organization
      Attribute:
        Attribute_Label: TIMEZONE
        Attribute_Definition: Time-zone correction
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: In our datasets, no correction was applied. All values equal 0.
      Attribute:
        Attribute_Label: DATE
        Attribute_Definition: Survey Date
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 19940725
            Range_Domain_Maximum: 19940830
            Attribute_Units_of_Measure: YYYYMMDD, (four digit year, two digit month, two digit day)
      Attribute:
        Attribute_Label: TIME
        Attribute_Definition: Time
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 0
            Range_Domain_Maximum: 2355
            Attribute_Units_of_Measure: hours and decimal minutes
      Attribute:
        Attribute_Label: LAT
        Attribute_Definition: Latitude
        Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 64.39064
            Range_Domain_Maximum: 89.98766
            Attribute_Units_of_Measure: decimal degrees
      Attribute:
        Attribute_Label: LON
        Attribute_Definition: Longitude
        Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: -179.98301
            Range_Domain_Maximum: 179.95506
            Attribute_Units_of_Measure: decimal degrees
      Attribute:
        Attribute_Label: POS_TYPE
        Attribute_Definition: Indicates how lat/lon was obtained
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: 1
            Enumerated_Domain_Value_Definition: Observed fix
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 3
            Enumerated_Domain_Value_Definition: Interpolated fix
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: nil
            Enumerated_Domain_Value_Definition: unspecified
            Enumerated_Domain_Value_Definition_Source: NGDC
      Attribute:
        Attribute_Label: BAT_TTIME
        Attribute_Definition: Bathymetry, 2-way travel time
        Attribute_Definition_Source: U.S. Geological Survey
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 0.00133
            Range_Domain_Maximum: 4.34
            Attribute_Units_of_Measure: seconds
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: p194ar.h77t
        Entity_Type_Definition: MGD77T single-beam bathymetry header file for P-1-94-AR
        Entity_Type_Definition_Source: NOAA's National Geophysical Data Center, See Hittelman and others (2010) Cross_Reference section above for details about the MGD77T format and citation information.
      Attribute:
        Attribute_Label: SURVEY_ID
        Attribute_Definition: Survey identifier supplied by the contributing organization
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: This identifier varies in format and is supplied by the contributing organization
      Attribute:
        Attribute_Label: FORMAT_77
        Attribute_Definition: Format Acronym
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: PARAMS_CO
        Attribute_Definition: Parameters surveyed codes.
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Status of geophysical parameters for this survey. See Hittelman and others (2010) from the Cross_Reference section above for details.
      Attribute:
        Attribute_Label: INST_SRC
        Attribute_Definition: Source Institution
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: COUNTRY
        Attribute_Definition: Country
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: PLATFORM
        Attribute_Definition: Platform name
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: PLAT_TYPCO
        Attribute_Definition: Platform type code
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Enumerated_Domain:
            Enumerated_Domain_Value: nil
            Enumerated_Domain_Value_Definition: Unspecified
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 1
            Enumerated_Domain_Value_Definition: Surface Ship
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 2
            Enumerated_Domain_Value_Definition: Submersible Ship
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 3
            Enumerated_Domain_Value_Definition: Aircraft
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 4
            Enumerated_Domain_Value_Definition: Buoy
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 5
            Enumerated_Domain_Value_Definition: Mobile land
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 6
            Enumerated_Domain_Value_Definition: Fixed land
            Enumerated_Domain_Value_Definition_Source: NGDC
          Enumerated_Domain:
            Enumerated_Domain_Value: 7
            Enumerated_Domain_Value_Definition: Deep tow
            Enumerated_Domain_Value_Definition_Source: NGDC
      Attribute:
        Attribute_Label: PLAT_TYP
        Attribute_Definition: Platform type
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: CHIEF
        Attribute_Definition: Chief Scientist(s)
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: PROJECT
        Attribute_Definition: Project, cruise, leg
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: FUNDING
        Attribute_Definition: funding
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: DATE_DEP
        Attribute_Definition: survey departure date
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 19770427
            Range_Domain_Maximum: 20000629
            Attribute_Units_of_Measure: YYYYMMDD (four digit year, two digit month, two digit day)
      Attribute:
        Attribute_Label: PORT_DEP
        Attribute_Definition: port of departure
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: DATE_ARR
        Attribute_Definition: survey arrival date
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 19770427
            Range_Domain_Maximum: 20000629
            Attribute_Units_of_Measure: YYYYMMDD (four digit year, two digit month, two digit day)
      Attribute:
        Attribute_Label: PORT_ARR
        Attribute_Definition: port of arrival
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: NAV_INSTR
        Attribute_Definition: navigation instrumentation
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: POS_INFO
        Attribute_Definition: position determination method/ geodetic datum
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: BATH_INSTR
        Attribute_Definition: bathymetry instrumentation
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: BATH_ADD
        Attribute_Definition: additional forms of bathymetry
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: LAT_TOP
        Attribute_Definition: Latitude
        Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 16.38240
            Range_Domain_Maximum: 89.98766
            Attribute_Units_of_Measure: decimal degrees
      Attribute:
        Attribute_Label: LAT_BOTTOM
        Attribute_Definition: Latitude
        Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 16.38240
            Range_Domain_Maximum: 89.98766
            Attribute_Units_of_Measure: decimal degrees
      Attribute:
        Attribute_Label: LON_LEFT
        Attribute_Definition: Longitude
        Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 10.30551
            Range_Domain_Maximum: -117.13802
            Attribute_Units_of_Measure: decimal degrees
      Attribute:
        Attribute_Label: LON_RIGHT
        Attribute_Definition: Longitude
        Attribute_Definition_Source: World Geodetic System 1984 Geographic Coordinate System
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 10.30551
            Range_Domain_Maximum: -117.13802
            Attribute_Units_of_Measure: decimal degrees
      Attribute:
        Attribute_Label: BATH_DRATE
        Attribute_Definition: general digitizing rate of bathymetry
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: SOUND_VEL
        Attribute_Definition: assumed sound velocity
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: Text string description
      Attribute:
        Attribute_Label: VDATUM_CO
        Attribute_Definition: bathymetric vertical datum
        Attribute_Definition_Source: NGDC
        Attribute_Domain_Values:
          Unrepresentable_Domain: In our datasets, no correction was applied. All values equal 0.
    Overview_Description:
      Entity_and_Attribute_Overview: Bathymetry and navigation data for U.S. Geological Survey bathymetry survey P-1-94-AR in MGD77T format.
      Entity_and_Attribute_Detail_Citation: Attributes are obtained from MGD77T data files created from the navigation and bathymetry best files. MGD77T is the standard, defined data format used for geophysical data in the National Geophysical Data Center. The MGD77T format contains more attributes than defined here. Attributes that were null for this data were not included. Details about other attributes can be found in Hittelman and others (2010), see Cross_Reference section above for citation details.
  Metadata_Reference_Information:
    Metadata_Date: 20201013
    Metadata_Contact:
      Contact_Information:
        Contact_Person_Primary:
          Contact_Person: Heather A. Schreppel
          Contact_Organization: Cherokee Nation Technology Solutions, contracted to the U.S. Geological Survey
        Contact_Position: IT Management Specialist/Database Support Assistant
        Contact_Address:
          Address_Type: mailing and physical address
          Address: U.S. Geological Survey, 600 Fourth Street South
          City: St. Petersburg
          State_or_Province: FL
          Postal_Code: 33701
          Country: USA
        Contact_Voice_Telephone: (727) 803-8747, ext. 3013
        Contact_Electronic_Mail_Address: hschreppel@usgs.gov
    Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
    Metadata_Standard_Version: FGDC-STD-001-1998