The ASTER Global Digital Elevation Model (GDEM) Version 3 (ASTGTM) provides a global digital elevation model (DEM) of land areas on Earth at a spatial resolution of 1 arc second (approximately 30 meter horizontal posting at the equator).
The development of the ASTER GDEM data products is a collaborative effort between National Aeronautics and Space Administration (NASA) and Japan’s Ministry of Economy, Trade, and Industry (METI). The ASTER GDEM data products are created by the Sensor Information Laboratory Corporation (SILC) in Tokyo.
An open access geospatial data repository for the Pacific Region providing premier geophysical, geodetic, and marine spatial data sets. Developed through collaboration between the GeoScience, Energy and Maritime Division of the Pacific Community (SPC), University of Sydney, Geoscience Australia (GA), and GRID-Arendal.