NGDC Marine Trackline Geophysics 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.

Data and Resources

Field Value
accessLevel public
accrualPeriodicity irregular
bureauCode {006:48}
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier gov.noaa.ngdc:G00129
language {en-US}
modified 1977-01-01
old-spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
programCode {006:059}
publisher DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
resource-type Dataset
source_datajson_identifier true
source_hash 3ffecb8317b6c89abda5ba3581b91e363f77cdc7
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-180.0, -90.0], [180.0, -90.0], [180.0, 90.0], [-180.0, 90.0], [-180.0, -90.0]]]}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • amerigeo
  • amerigeoss
  • boulder
  • boulder-world-data-center-for-marine-geology-and-geophysics
  • ckan
  • doc-noaa-nesdis-ngdc-national-geophysical-data-center
  • earth-science-oceans-bathymetry-seafloor-topography-bathymetry
  • earth-science-oceans-bathymetry-seafloor-topography-seafloor-topography
  • 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
  • elevation-theme
  • geo
  • geographic-region-global-ocean
  • geoss
  • infoterra-energy-energy-processes-natural-gas-exploration
  • infoterra-energy-energy-processes-oil-exploration
  • infoterra-subject-disciplines-geophysics-geophysics
  • national
  • national-geospatial-data-asset
  • nesdis
  • ngda
  • noaa
  • north-america
  • ocean-arctic-ocean
  • ocean-atlantic-ocean
  • ocean-indian-ocean
  • ocean-pacific-ocean
  • ocean-southern-ocean
  • u-s-department-of-commerce
  • united-states
  • vertical-location-sea-floor
  • wdc-mgg
isopen False
license_id notspecified
license_title License not specified
maintainer Brian Meyer
maintainer_email Brian.Meyer@noaa.gov
metadata_created 2025-11-19T22:35:04.624318
metadata_modified 2025-11-19T22:35:04.624323
notes 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.
num_resources 10
num_tags 38
title NGDC Marine Trackline Geophysics Database