NCEI (formerly NGDC)
EMMA logo

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
Search Data
Distribution Formats
  • MGD77T
  • XYZ
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
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.
Date(s)
  • publication: 1977-01-01
Dataset Progress Status Ongoing
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
Originator(s)
  • 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
Custodian(s)
  • Dataset contact information not available
Publisher(s)
  • 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: 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.
Lineage information for: dataset
Source Datasets Data in this database is provided by the following institutions: Scripps Institution of Oceanography, Lamont-Doherty Geological Observatory, Geological Survey of Japan, Hydrographic Department of Japan, University of Hawaii, IFREMER, US National Oceanic and Atmospheric Administration, United States Geologic Survey, Woods Hole Oceanographic Institution, US Navy Naval Oceanographic Office, Ocean Drilling Program at Texas A and M, Bundesanstalt f??r Geowissenschaften und Rohstoffe, Bedford Institute of Oceanography, University of Texas Institute for Geophysics, Institute of Oceanographic Sciences UK, CNEXO, Oregon State University, Bureau of Mineral Resources Australia, Geophysics Division DSIR New Zealand, US Navy NORDA, Texas A and M University, Natural Environment Research Council UK, BNDO, GNS Science New Zealand, University of Tokyo, Geological Survey of Canada, Australian Geological Survey Organisation, GEOMER Data Bank ORSTOM Noumea, Kobe University, Canadian Hydrographic Service, Mobil, Hydrographic Department MSA, Institute of Marine Geology/Geophysics USSR, Oregon State University, United Kingdom Hydrographic Office, University of Rhode Island, Geological Survey of Ireland, GEOMAR Germany, NIWA New Zealand, Russian Academy of Science, South African Data Centre for Oceanography, University of Witwatersrand, Royal Netherlands Navy Hydrographic Service, Chiba University, Land Information New Zealand, Southampton Oceanography Centre, University of Cape Town, University of the Ryukyus, Bundesamt Seeschiffahrt Hydrographie, GuangZhou Marine Geological Survey MGMR, National Institute of Polar Research Japan, National Science Foundation, ORSTOM, Rice University, South African Geological Survey, University of Alabama, University of Cape Town, University of Texas at Austin, University of Rhode Island, BP Shell Todd, British Antarctic Survey, British Oceanographic Data Centre, Diamond Shamrock Petroleum, Far East Scientific Center, First Institute of Oceanography, SOA, Hamilton College, Institut de Physique du Globe de Paris, Jet Propulsion Laboratory, National Research Institute Oceanology South Africa, Petrocorp, Stewart Petroleum, Universite Francaise Pacifique Tahiti, University of California at San Diego
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