NGDC Trackline Data Download®
Geophysical Trackline data can be downloaded using the National Geophysical Data Center's Marine and Aeromagnetics Trackline Map Service. For help in understanding and using your downloaded data, see this trackline download help.
For information about NGDC's Coastlines services, related data sets, and software to access your downloaded data, see the sections below.
Coastlines at NGDC
NGDC has moved to using the GSHHG High-resolution Geography Database for World Shorelines and Political Boundaries. Click to download Version 2.2.2 GSHHG Shorelines and WDBII Rivers and Political Boundaries in ESRI Shape File© format. GEODAS-NG software (see Desktop Windows Software above) works with GSHHG/WDBII. GEODAS application Coastline Extractor allows sub-setting GSHHG/WDBII (and many other shoreline data sets) by area, resolution, etc.
See NGDC's Shoreline/Coastline Resources page for links to GSHHG/WDBII and to other ESRI Shape File© formatted shoreline datasets.
Users who want the legacy GEODAS Coastlines files (also works with GEODAS-NG software) can download the GEODAS Coastlines
Desktop Windows Software
While there are many commercial and non-commercial software packages that exist for further processing and visualizing trackline data, the NGDC GEODAS-NG software is offered for users.
GEODAS-NG (GEOphysical DAta System - Next Generation) software suite can be used for NGDC downloaded data. Other datasets can also benefit from this comprehensive software package. The renamed GEODAS-NG software represents a somewhat different direction than deprecated GEODAS DVD-focused software. GEODAS-NG software does not support the legacy GEODAS CD and DVD datasets. Rather GEODAS-NG will focus directly on downloaded data files in various formats.
Click to download GEODAS-NG Software Ver 1.1.2. See readme.txt for install instructions. For legacy GEODAS CD/DVD users only, you can update your software using (only) GEODAS DVD Software Update Ver 22.214.171.124. GEODAS DVD Software can co-exist with the newer GEODAS-NG Software.
GEODAS-NG Software application Grid Translator can be used view, revise, subset and re-format ESRI ASCII Raster grids and Binary grids. NGDC's ETOPO1 Global Relief, US Coastal Relief Model, and Great Lakes Bathymetry and other gridded datasets can be directly imported. See NGDC's Grid Extraction Tool for creating grid subsets of the above data sets. See NGDC's Digital Elevation Model Discovery Portal for links to NGDC's bathymetry gridded datasets.
Contour Data Shape Files
GEODAS-NG Software application Hydro-Plot can be used to directly view contoured data in ESRI Shape File format. NGDC provides contours via various types of data, including Great Lakes Bathymetry contours.
GEODAS Exchange Formats MGD-2000
GEODAS-NG Software applications and many non-NGDC sites often use a set of data exchange formats developed at NGDC, collected as GEODAS MGD-2000 Formats. Formats included are:
For more information about GEODAS-NG Software, datasets and formats please contact email@example.com
For more information about Coastlines at NGDC please contact firstname.lastname@example.org