World Data Service for Geophysics
Marine Trackline Geophysical Data
NCEI's Marine Trackline Geophysical database provides bathymetry (single-beam), magnetics, gravity and seismic reflection data collected during marine cruises from 1939 to the present. Data sources include US and non-US oceanographic institutions, universities, and government agencies with worldwide data coverage.
Locating and Downloading Data
Data are available via the
Trackline Geophysical Data Viewer. Search by geographic area, year of survey, institution, platform, survey name, date added to the database, and data type are available. Downloads can be customized to area, data type, and format.
NCEI accepts contributions of underway geophysical data on almost any media, preferably in the MGD77T Format. Data received become part of the international public domain, available to anyone. Proprietary data can also be archived at NCEI. If you would like to contribute data, contact
GEODAS-NG Desktop Software
NCEI's GEODAS-NG (GEOphysical DAta System - Next Generation) desktop software is used to work with trackline data formats.
GEODAS-NG Software and non-NCEI sites use data exchange formats (MGD-2000) developed at NCEI:
Contour Data Shapefiles: GEODAS-NG Software application Hydro-Plot can be used to view contoured data in ESRI shapefile format. NCEI provides contours via various types of data, including Great Lakes Bathymetry.
GEODAS-NG Desktop Windows Software:
software can be used for NCEI data, however it does not support the legacy GEODAS CD and