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

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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: 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

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