Marine Trackline Geophysical DatabaseBack to Collection NOAA/NESDIS/NGDC/Collection
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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 down (...etc)

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Geophysical Survey Data
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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 oceano (...etc)
Format version: (unknown)
Format version: (unknown)
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Ordering Instructions
Ordering Instructions: Trackline data can be obtained by visiting the Geophysical Survey Data Viewer at The user must then select the desired parameters (bathymetry, magnetics, gravity or seismic) and an (...etc)

Use Limitation
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.

Legal 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 (...etc)

Use Limitation

Citation Recommendation: Cite As: NOAA National Geophysical Data Center (1977): Marine Trackline Geophysical Database. NOAA National Centers for Environmental Information. doi:10.7289/V5CZ35DR