f991cp.m77t and f991cp.h77t: MGD77T data and header files for single-beam bathymetry data for field activity F-9-91-CP in Central Pacific from 09/24/1991 to 09/25/1991

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: U.S. Geological Survey
Originator: Coastal and Marine Geology Program
Publication_Date: 2013
Title:

f991cp.m77t and f991cp.h77t: MGD77T data and header files for single-beam bathymetry data for field activity F-9-91-CP in Central Pacific from 09/24/1991 to 09/25/1991

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/f991cp.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 GPS navigation data was collected as part of the U.S. Geological Survey cruise F-9-91-CP. The cruise was conducted in the Central Pacific from September 24 to September 25, 1991. The chief scientists was Jim Gardner from the USGS Coastal and Marine Geology office in Menlo Park, CA. The geophysical source was a 10 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/f/f991cp/html/f-9-91-cp.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 digitally collected using a Global Positioning System (GPS). The GPS is a space-based satellite navigation system maintained by the United States government and is accessible using a GPS receiver. Data accuracy is based on individual receiver models, and most GPS data are collected in the WGS84 horizontal datum. 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 10 kHz and 3.5 kHz systems. 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: 19910924
Ending_Date: 19910925

Currentness_Reference: ground condition

Status:

Progress: Complete
Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -159.35820
East_Bounding_Coordinate: -157.32581
North_Bounding_Coordinate: 21.41710
South_Bounding_Coordinate: 20.45990

Keywords:

Theme:

Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:43dbefa2-4c9b-4be0-bf16-2d29c74eb765

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 Hawaii
Place_Keyword: Central Pacific Ocean
Place_Keyword: Pacific Ocean

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: Jim Gardner (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 (f-9-91-cp.050 [SINS])
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
199109240636000    199109240704000
199109240714000    199109240727000
199109240734000    199109240838000
199109240845000    199109240905000
199109240911000    199109241346000
199109241355000    199109241359000
199109241406000    199109241406000
199109241412000    199109241412000
199109241419000    199109250208000
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
Bathymetry Data (f-9-91-cp.300_050)
YYYYMMDDHHMMSST    YYYYMMDDHHMMSST
199109240636000    199109240636000
199109240642000    199109240642000
199109240648000    199109240648000
199109240654000    199109240654000
199109240700000    199109240700000
199109240718000    199109240718000
199109240724000    199109240724000
199109240736000    199109240736000
199109240742010    199109240742010
199109240748000    199109240748000
199109240754000    199109240754000
199109240800000    199109240800000
199109240806000    199109240806000
199109240812000    199109240812000
199109240818000    199109240818000
199109240824000    199109240824000
199109240830000    199109240830000
199109240836000    199109240836000
199109240848000    199109240848000
199109240854000    199109240854000
199109240900000    199109240900000
199109240912000    199109240912000
199109240918000    199109240918000
199109240924000    199109240924000
199109240930000    199109240930000
199109240936000    199109240936000
199109240942000    199109240942000
199109240948000    199109240948000
199109240954000    199109240954000
199109241000000    199109241000000
199109241006000    199109241006000
199109241012000    199109241012000
199109241018000    199109241018000
199109241024000    199109241024000
199109241030000    199109241030000
199109241036000    199109241036000
199109241042000    199109241042000
199109241048000    199109241048000
199109241054000    199109241054000
199109241100000    199109241100000
199109241106000    199109241106000
199109241112000    199109241112000
199109241118000    199109241118000
199109241124000    199109241124000
199109241130000    199109241130000
199109241136000    199109241136000
199109241142000    199109241142000
199109241148000    199109241148000
199109241154000    199109241154000
199109241200000    199109241200000
199109241206000    199109241206000
199109241212000    199109241212000
199109241218000    199109241218000
199109241224000    199109241224000
199109241230000    199109241230000
199109241236000    199109241236000
199109241242000    199109241242000
199109241248000    199109241248000
199109241254000    199109241254000
199109241300000    199109241300000
199109241306000    199109241306000
199109241312000    199109241312000
199109241318000    199109241318000
199109241324000    199109241324000
199109241330000    199109241330000
199109241336000    199109241336000
199109241342000    199109241342000
199109241406000    199109241406000
199109241412000    199109241412000
199109241424000    199109241424000
199109241430000    199109241430000
199109241436000    199109241436000
199109241442000    199109241442000
199109241448000    199109241448000
199109241454000    199109241454000
199109241500000    199109241500000
199109241506000    199109241506000
199109241512000    199109241512000
199109241518000    199109241518000
199109241524000    199109241524000
199109241530000    199109241530000
199109241536000    199109241536000
199109241542000    199109241542000
199109241548000    199109241548000
199109241554000    199109241554000
199109241600000    199109241600000
199109241606000    199109241606000
199109241612000    199109241612000
199109241618000    199109241618000
199109241624000    199109241624000
199109241630000    199109241630000
199109241636000    199109241636000
199109241642000    199109241642000
199109241648000    199109241648000
199109241654000    199109241654000
199109241700000    199109241700000
199109241706000    199109241706000
199109241712000    199109241712000
199109241718000    199109241718000
199109241724000    199109241724000
199109241730000    199109241730000
199109241736000    199109241736000
199109241742000    199109241742000
199109241748000    199109241748000
199109241754000    199109241754000
199109241800000    199109241800000
199109241806000    199109241806000
199109241812000    199109241812000
199109241818000    199109241818000
199109241824000    199109241824000
199109241830000    199109241830000
199109241836000    199109241836000
199109241842000    199109241842000
199109241848000    199109241848000
199109241854000    199109241854000
199109241900000    199109241900000
199109241906000    199109241906000
199109241912000    199109241912000
199109241918000    199109241918000
199109241924000    199109241924000
199109241930000    199109241930000
199109241936000    199109241936000
199109241942000    199109241942000
199109241948000    199109241948000
199109241954000    199109241954000
199109242000000    199109242000000
199109242006000    199109242006000
199109242012000    199109242012000
199109242018000    199109242018000
199109242024000    199109242024000
199109242030000    199109242030000
199109242036000    199109242036000
199109242042000    199109242042000
199109242048000    199109242048000
199109242054000    199109242054000
199109242100000    199109242100000
199109242106000    199109242106000
199109242112000    199109242112000
199109242118000    199109242118000
199109242124000    199109242124000
199109242130000    199109242130000
199109242136000    199109242136000
199109242142000    199109242142000
199109242148000    199109242148000
199109242154000    199109242154000
199109242200000    199109242200000
199109242206000    199109242206000
199109242212000    199109242212000
199109242218000    199109242218000
199109242224000    199109242224000
199109242230000    199109242230000
199109242236000    199109242236000
199109242242000    199109242242000
199109242248000    199109242248000
199109242254000    199109242254000
199109242300000    199109242300000
199109242306000    199109242306000
199109242312000    199109242312000
199109242318000    199109242318000
199109242324000    199109242324000
199109242330000    199109242330000
199109242336000    199109242336000
199109242342000    199109242342000
199109242348000    199109242348000
199109242354000    199109242354000
199109250000000    199109250000000
199109250006000    199109250006000
199109250012000    199109250012000
199109250018000    199109250018000
199109250024000    199109250024000
199109250030000    199109250030000
199109250036000    199109250036000
199109250042000    199109250042000
199109250048000    199109250048000
199109250054000    199109250054000
199109250100000    199109250100000
199109250106000    199109250106000
199109250112000    199109250112000
199109250118000    199109250118000
199109250124000    199109250124000
199109250130000    199109250130000
199109250136000    199109250136000
199109250142000    199109250142000
199109250148000    199109250148000
199109250154000    199109250154000
199109250200000    199109250200000
199109250206000    199109250206000
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.

10/01/91 CAROLYN PMG:[CAROLYN.RANI]F991CP.050;1
ISDMNL$DUA12:[PMG.REFMT]REFORMAT.EXE;
Integrated navigation (SINS) data
simply reformatted from the DXFMT file sent by Rani, 9/30/91

Process_Date: 19960205
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  /lion/f/f991cp/bath/f-9-91-cp.300_050
/bear/programs/edit/automerge/automerge

Input was...
Converted to time format with year at start.

10/01/91 CAROLYN PMG:[CAROLYN.RANI]F991CP.300;1
ISDMNL$DUA12:[PMG.REFMT]REFORMAT.EXE;
Raw depth (bathymetry) data
simply reformatted from the DXFMT file sent by Rani, 9/30/91
contained only uncorrected bathy

Input was...
Converted to time format with year at start.

10/01/91 CAROLYN PMG:[CAROLYN.RANI]F991CP.050;1
ISDMNL$DUA12:[PMG.REFMT]REFORMAT.EXE;
Integrated navigation (SINS) data
simply reformatted from the DXFMT file sent by Rani, 9/30/91

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: f-9-91-cp.050.txt
Process_Date: 2012
Source_Produced_Citation_Abbreviation: f991cpnav.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: f-9-91-cp.300_050.txt
Process_Date: 2012
Source_Produced_Citation_Abbreviation: f991cpbathy.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: f991cpbathy.txt, f991cpnav.txt
Process_Date: 2012
Source_Produced_Citation_Abbreviation: f991cpall.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: f991cpall.txt
Process_Date: 2012
Source_Produced_Citation_Abbreviation: f991cp.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/f/f991cp/html/f-9-91-cp.meta.html.

Process_Date: 2012
Source_Produced_Citation_Abbreviation: f991cp.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: Central Pacific Ocean from 09/24/1991 to 09/25/1991
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: f991cp.m77t
Entity_Type_Definition: MGD77T single-beam bathymetry data file for F991CP
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: 19910924
Range_Domain_Maximum: 19910925
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: 2359
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: 20.4599
Range_Domain_Maximum: 21.4171
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: -159.3582
Range_Domain_Maximum: -157.3258
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: 4.44667
Range_Domain_Maximum: 6.25467
Attribute_Units_of_Measure: seconds

Detailed_Description:

Entity_Type:

Entity_Type_Label: f991cp.h77t
Entity_Type_Definition: MGD77T single-beam bathymetry header file for F-9-91-CP
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 F-9-91-CP 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

This page is <https://cmgds.marine.usgs.gov/catalog/spcmsc/DS757_f991cp.html>