Updated Global Elevation Data Released by NASA
A new global digital elevation model (DEM) has been released by NASA.
Version 3 of the ASTER Global Digital Elevation Model Released
2.3 million scenes from the ASTER archive were processed to create the latest version of the ASTER Global Digital Elevation Model (GDEM).
Highest Resolution DEM of Antarctica Released
Called the Reference Elevation Model of Antarctica (REMA), a new 8-meter resolution digital elevation model covering 98% of the continent of Antarctica has been released.
New High Resolution DEM of Antarctica Available
250 million measurements have resulted in the release of the highest available resolution digital elevation model (DEM) covering Antarctica.
Updated 3D Global Topo Data from NASA
Based on measurements from NASA’s Terra spacecraft, a new 3D topographic map has been released as a joint effort by NASA and Japan. The digital elevation … Read more
First Images From TanDEM-X
Launched on June 21st of this year, the first images from TanDEM-X have been acquired and processed 3.5 days post launch. As the name implies, … Read more
Overview of Elevation Data
Hypsography, topography, elevation, TINS, and contours. There are many different terms for data relating to elevation. This article reviews some of terminology and types of … Read more
How to Select Ridgelines From a DEM Using Spatial Analyst
Selecting out ridgelines from a DEM using ArcView 3x’s Spatial Analyst extension is pretty straightforward. These steps assume the initial DEM is called “elev”. Time … Read more