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New, improved version of generic mapping tools released
GMT allows users to manipulate (x,y,z) data, and generate PostScript illustrations, including simple x-y diagrams, contour maps, color images, and artificially illuminated, perspective, and/or shaded-relief plots using a variety of map projections.
Global Sea Floor Topography from Satellite Altimetry and Ship Depth Soundings
A digital bathymetric map of the oceans with a horizontal resolution of 1 to 12 kilometers was derived by combining available depth soundings with high-resolution marine gravity information from the…
Generic Mapping Tools: Improved Version Released
Generic Mapping Tools (GMT) is an open-source software package for the analysis and display of geoscience data, helping scientists to analyze, interpolate, filter, manipulate, project, and plot time…
Free software helps map and display data
The Generic Mapping Tools (GMT) is introduced, which is a free, public domain software package that can be used to manipulate columns of tabular data, time series, and gridded data sets and to display these data in a variety of forms ranging from simple x-y plots to maps and color, perspective, and shaded-relief illustrations.
Marine gravity anomaly from Geosat and ERS 1 satellite altimetry
Closely spaced satellite altimeter profiles collected during the Geosat Geodetic Mission (-6 km) and the ERS 1 Geodetic Phase (8 km) are easily converted to grids of vertical gravity gradient and…
Gridding with continuous curvature splines in tension
A gridding method commonly called minimum curvature is widely used in the earth sciences. The method interpolates the data to be gridded with a surface having continuous second derivatives and…
A global, self‐consistent, hierarchical, high‐resolution shoreline database
A high-resolution shoreline data set amalgamated from two databases in the public domain, which has undergone extensive processing and is free of internal inconsistencies such as erratic points and crossing segments is presented.
New global marine gravity model from CryoSat-2 and Jason-1 reveals buried tectonic structure
- D. Sandwell, R. Müller, Walter H. F. Smith, E. Garcia, R. Francis
- Geology, Environmental ScienceScience
- 3 October 2014
An extinct spreading ridge in the Gulf of Mexico, a major propagating rift in the South Atlantic Ocean, abyssal hill fabric on slow-spreading ridges, and thousands of previously uncharted seamounts are found.
New version of the generic mapping tools
GMT is a public domain collection of UNIX tools that contains programs to manipulate (x,y,z) data and to generate PostScript illustrations, including simple x-y diagrams, contour maps, color images, and artificially illuminated, perspective, shaded-relief plots using a variety of map projections.
Bathymetric prediction from dense satellite altimetry and sparse shipboard bathymetry
The southern oceans (south of 30°S) are densely covered with satellite-derived gravity data (track spacing 2–4 km) and sparsely covered with shipboard depth soundings (hundreds of kilometers between…