Visit NAP.edu/10766 to get more information about this book, to buy it in print, or to download it as a free PDF. The nation is presently making an investment of more than $200 million per year in ...

High-resolution topographic data generated from NASA's Shuttle Radar Topography Mission (SRTM) in 2000, previously only available for the United States, will be released globally over the next year, ...

When National Geospatial-Intelligence Agency partners plan operations, the agency provides them with products that identify the latitude and longitude of various locations, so that they can pinpoint ...

We mentioned in our post on simulating lakes that Google Earth’s elevation data is often very inaccurate in mountainous areas. When looking around the 3D imagery of Rio de Janeiro, where the Olympics ...

On September 23, National Aeronautics and Space Administration (NASA), National Geospatial-Intelligence Agency (NGA), and the U.S. Geological Survey (USGS) announced the public release of ...

A floodplain map has three key components: base map imagery and/or cartographic line work, an elevation model representing the earth’s surface or “terrain,” and flood study results generated from ...