Metadata:
  Identification_Information:
    Citation:
      Citation_Information:
        Originator: U.S. Geological Survey
        Originator: Coastal and Marine Geology Program
        Publication_Date: 2013
        Title: s378sc.m77t and s378sc.h77t: MGD77T data and header files for single-beam bathymetry data for field activity S-3-78-SC in Southern California from 05/24/1978 to 06/01/1978
        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/s378sc.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 radar and Loran-C navigation data was collected as part of the U.S. Geological Survey cruise G-1-77-EG. The cruise was conducted in Southern California from May 24 to June 1, 1978. The chief scientists were Bill Normark and Gordon Hess from the USGS Coastal and Marine Geology office in Menlo Park, CA. The geophysical source was a 12 kilohertz (kHz) and 3.5 kHz system.
        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/g/g177eg/html/g-1-77-eg.meta.htmlinto 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 is collected as radar and Loran-C records. Loran-C was a federally provided radionavigation service managed by the U.S. Coast Guard. Low frequency radio signals transmitted by fixed land based radio beacons served the 48 continental states, their coastal areas, and parts of Alaska.
        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 with a 12 kHz and 3.5 kHz 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: 19780524
          Ending_Date: 19780601
      Currentness_Reference: ground condition
    Status:
      Progress: Complete
      Maintenance_and_Update_Frequency: None planned
    Spatial_Domain:
      Bounding_Coordinates:
        West_Bounding_Coordinate: -124.62096
        East_Bounding_Coordinate: -117.60966
        North_Bounding_Coordinate: 36.43250
        South_Bounding_Coordinate: 32.18146
    Keywords:
      Theme:
        Theme_Keyword_Thesaurus: USGS Metadata Identifier
        Theme_Keyword: USGS:4d8a061b-f2e3-4990-8180-d57b85314f65
      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: State of California
        Place_Keyword: Pacific Ocean
        Place_Keyword: Southern California
    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:
      Bill Normark (Chief Scientist, USGS Western Region);
      Gordon Hess (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 (s-3-78-sc.050 [SINS])
      >YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
      >197805241729030    197805311730000
      >197805311800000    197805311830000
      >197805311910000    197805311928000
      >197805312016000    197805312016000
      >197805312050000    197805312050000
      >197805312114000    197805312114000
      >197805312137000    197805312137000
      >197805312204000    197805312238000
      >197805312301050    197806010051000
      >197806010136000    197806010136000
      >197806010200000    197806010200000
      >197806010230000    197806010245000
      >197806010355000    197806010420000
      >197806010505000    197806010505000
      >197806010631000    197806010648000
      >197806010710370    197806011404360
      >YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
      >Bathymetry Data (s-3-78-sc.330_050)
      >YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
      >197805282300040    197805290528100
      >197805290630110    197805291004090
      >197805291926000    197805291926000
      >197805291942000    197805291942000
      >197805292008000    197805292008000
      >197805292042000    197805292042000
      >197805292112000    197805292112000
      >197805292154000    197805292154000
      >197805292230000    197805292230000
      >197805292318000    197805292318000
      >197805292329260    197805301328080
      >197805302200430    197805302229200
      >197805302237050    197805302252510
      >197805302300530    197805302302470
      >197805302309290    197805302318100
      >197805302329250    197805310006000
      >197805310011230    197805310017450
      >197805310024470    197805310024470
      >197805310032190    197805310032190
      >197805310038080    197805310101050
      >197805310106250    197805310106250
      >197805310111350    197805310111350
      >197805310123160    197805310137180
      >197805310142470    197805310145570
      >197805310158370    197805310158370
      >197805310208450    197805310208450
      >197805310217570    197805310250110
      >197805310256580    197805310317160
      >197805310323350    197805310345540
      >197805310356290    197805310453500
      >197805310502280    197805310736270
      >197805310747230    197805310752360
      >197805310757510    197805310757510
      >197805310827000    197805310828490
      >197805310836450    197805310846270
      >197805310900310    197805311110310
      >197805312301050    197806010049060
      >197806010710370    197806011139340
      >197806011152350    197806011202010
      >197806011213330    197806011248190
      >197806011258240    197806011340090
      >197806011346000    197806011346000
      >197806011402090    197806011404360
      >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.
          >
          >01/17/86 KAYE DUA0:[DATA.S378SC.N]S378SC.050;
          >DRB0:[DRS.REFMT]REFORMAT.EXE;5
          > Edited DR's.
          >
        Process_Date: 19951206
        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: 95060-5792
              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/s/s378sc/bath/s-3-78-sc.330_050
          >/bear/programs/edit/automerge/automerge
          >
          >Input was...
          >Converted to time format with year at start.
          >
          >11/30/90 CAROLYN DUA0:[DRS.NGDC.CDWORK]S378SC.330;1
          >DUA0:[DRS.BAT]BATRED.EXE;2
          >Edited bathymetry data
          >using velocity = 1463.0 m/sec for MGD-77 format
          >
          >12/13/85 BECKIE DISK$USERDISK:[BECKIE.TEMP]S378SC.301;
          >DRB0:[DRS.REFMT]REFORMAT.EXE;5
          >This file appears to be 2 minute edited digitrack
          >bathy.  Reduction parameters used are unknown.
          >
          >Input was...
          >Converted to time format with year at start.
          >
          >01/17/86 KAYE DUA0:[DATA.S378SC.N]S378SC.050;
          >DRB0:[DRS.REFMT]REFORMAT.EXE;5
          > Edited DR's.
          >
          >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: 95060-5792
              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: s-3-78-sc.050.txt
        Process_Date: 2012
        Source_Produced_Citation_Abbreviation: s378scnav.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: s-3-78-sc.330_050.txt
        Process_Date: 2012
        Source_Produced_Citation_Abbreviation: s378scbathy.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: s378scbathy.txt, s378scnav.txt
        Process_Date: 2012
        Source_Produced_Citation_Abbreviation: s378scall.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: s378scall.txt
        Process_Date: 2012
        Source_Produced_Citation_Abbreviation: s378sc.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/g/g177eg/html/g-1-77-eg.meta.html.
        Process_Date: 2012
        Source_Produced_Citation_Abbreviation: s378sc.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: Southern California from 05/24/1978 to 06/01/1978
    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: North American Datum of 1927
        Ellipsoid_Name: Clarke 1866
        Semi-major_Axis: 6378206.4
        Denominator_of_Flattening_Ratio: 294.98
  Entity_and_Attribute_Information:
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: s378sc.m77t
        Entity_Type_Definition: MGD77T single-beam bathymetry data file for S378SC
        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: 19780524
            Range_Domain_Maximum: 19780601
            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: 0.0333
            Range_Domain_Maximum: 2359.4333
            Attribute_Units_of_Measure: hours and decimal minutes
      Attribute:
        Attribute_Label: LAT
        Attribute_Definition: Latitude
        Attribute_Definition_Source: North American Datum of 1927 (Clarke 1866) Geographic Coordinate System
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: 32.18146
            Range_Domain_Maximum: 36.4325
            Attribute_Units_of_Measure: decimal degrees
      Attribute:
        Attribute_Label: LON
        Attribute_Definition: Longitude
        Attribute_Definition_Source: North American Datum of 1927 (Clarke 1866) Geographic Coordinate System
        Attribute_Domain_Values:
          Range_Domain:
            Range_Domain_Minimum: -124.62096
            Range_Domain_Maximum: -117.60966
            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: 4.26867
            Range_Domain_Maximum: 5.97733
            Attribute_Units_of_Measure: seconds
    Detailed_Description:
      Entity_Type:
        Entity_Type_Label: s378sc.h77t
        Entity_Type_Definition: MGD77T single-beam bathymetry header file for S-3-78-SC
        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 S-3-78-SC 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