Tools and Data
GeoMapApp is a global topography and bathymetry database that is integrated with an application to explore the data. The visualization tool was developed as part of the Marine Geoscience Data Management System. It is a Java™ application that will run on any computer platform with a Java Runtime Environment.
The program supports zooming in and out on maps, scrolling, the ability to "focus" an image for the current view, and to highlight areas of high resolution data on maps. It also supports generation of profiles and contour maps, the ability to customize maps with an interactive palette tool, generate 3D perspective images, select gravity and geoid grids, and save maps and grids.
Lamont-Doherty Earth Observatory, Columbia University, New York.
Online help is available through the GeoMapApp Help Pages.
Microsoft Excel is available as a free trial: http://office.microsoft.com/en-us/try/
Open Office can be downloaded for free from: https://www.openoffice.org/download/index.html
Excel help is available online Excel Help Page
The Global Multi-Resolution Topography (GMRT) Synthesis is maintained as a multi-resolution gridded global Digital Elevation Model (DEM) that includes cleaned processed ship-based multibeam sonar data at their full spatial resolution (~100m in the deep sea). GMRT is the default basemap for GeoMapApp .