Marine Trackline Geophysical Database

This data set contains bathymetry, magnetic, gravity and
seismic shot point navigation data collected during marine cruises from 1939 to
the present. Coverage is worldwide. These data are stored in the MGD77 exchange
format and are available for download in a variety of user selectable formats.
One Header record and multiple Data records are available for a particular
cruise/leg (port to port operation). The Header record documents both the
content and the structure of the subsequent Data records, containing that part
of the data that remains invariant throughout the cruise. The Data records
present geophysical data (bathymetry, magnetics and gravity) and seismic
information (shot-point identification) with a corresponding time and position.
Documentation that varies within the cruise is also included with the data
records. Data are fully searchable on-line by geographic area, year of cruise,
institution, platform, cruise, date or data type.
  • Cite As: NOAA National Geophysical Data Center (1977): Marine Trackline Geophysical Database. NOAA National Centers for Environmental Information. doi:10.7289/V5CZ35DR
gov.noaa.ngdc:G00129
Search Data
Distribution Formats
  • MGD77T
  • XYZ
Ordering Instructions Ordering Instructions: Trackline data can be obtained by visiting the Geophysical Survey Data Viewer at http://maps.ngdc.noaa.gov/viewers/geophysics/. The user must then select the desired parameters (bathymetry, magnetics, gravity or seismic) and any other applicable filters. The user is then able to get all of the data that fit this criteria (within certain size limits) or may further refine their request by designating an area of interest. The user is then taken to a landing page where they can further refine the data that they would like to be delivered, format, and any other data that is available. The user then provides an email address where the user will be informed when their data package is available for download.
Distributor Trackline Team
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
303 497-6826
trackline.info@noaa.gov
Dataset Point of Contact Brian Meyer
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
303-497-6125
Brian.Meyer@noaa.gov
Time Period 1939-01-01 to Present
Spatial Bounding Box Coordinates
N: 90.00
S: -90.00
E: 180.00
W: -180.00
Spatial Coverage Map
General Documentation
  • Marine Geophysical Trackline Data Homepage
    NGDC's Marine Trackline Geophysical database provides access to bathymetry, magnetics, gravity and seismic reflection data collected during marine cruises from 1939 to the present. Coverage is worldwide. Data sources include both US and non-US oceanographic institutions, universities, and government agencies.
Publication Dates
  • publication: 1977-01-01
Dataset Progress Status Ongoing - data is continually being updated
Data Update Frequency Irregular
Purpose Marine Research and Commercial Exploration
Use Limitations
  • Not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For navigation, please refer to the NOS nautical chart series.
Dataset Citation
  • Cite As: NOAA National Geophysical Data Center (1977): Marine Trackline Geophysical Database. NOAA National Centers for Environmental Information. doi:10.7289/V5CZ35DR
Originators
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (comp.)
  • U.S. and Foreign Academic Institutions
  • U.S. and Foreign Government Agencies
  • Private Companies
Custodians
  • Dataset contact information not available
Publishers
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Theme keywords Global Change Master Directory (GCMD) Science Keywords
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth
  • Earth Science > Oceans > Marine Geophysics > Magnetic Anomalies
  • Earth Science > Oceans > Marine Geophysics > Marine Gravity Field
  • Earth Science > Oceans > Marine Geophysics > Marine Magnetics
  • Earth Science > Solid Earth > Geodetics/Gravity > Gravity
  • Earth Science > Solid Earth > Geomagnetism > Magnetic Anomalies
  • Earth Science > Solid Earth > Geomagnetism > Magnetic Field
  • Earth Science > Solid Earth > Seismology > Seismic Profile
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
INFOTERRA Keyword Thesaurus
  • INFOTERRA > Energy > Energy processes > Natural gas exploration
  • INFOTERRA > Energy > Energy processes > Oil exploration
  • INFOTERRA > Subject disciplines > Geophysics > Geophysics
NGDA Portfolio Themes
  • NGDA
  • National Geospatial Data Asset
  • Elevation Theme
Global Change Master Directory (GCMD) Service Keywords
  • DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS
  • DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL
  • DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
Data Center keywords Global Change Master Directory (GCMD) Data Center Keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Place keywords Global Change Master Directory (GCMD) Location Keywords
  • Geographic Region > Global Ocean
  • Vertical Location > Sea Floor
  • Ocean > Arctic Ocean
  • Ocean > Atlantic Ocean
  • Ocean > Indian Ocean
  • Ocean > Pacific Ocean
  • Ocean > Southern Ocean
Project keywords Global Change Master Directory (GCMD) Project Keywords
  • ICSU-WDS > International Council for Science - World Data System
Use Constraints
    Access Constraints
    • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
    Other Constraints Cite As: NOAA National Geophysical Data Center (1977): Marine Trackline Geophysical Database. NOAA National Centers for Environmental Information. doi:10.7289/V5CZ35DR
    Fees
    • Depends on the Data Set
    Lineage information for: dataset
    Source Datasets
    Lineage information for: repository
    Processing Steps
    • 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
    Acquisition Information (collection)
    Instrument
    • ECHO SOUNDERS
    • GRAVIMETERS
    • MAGNETOMETERS
    • SEISMIC REFLECTION PROFILERS
    Last Modified: 2017-09-06
    For questions about the information on this page, please email: trackline.info@noaa.gov