The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is a 15-channel imaging instrument operating on NASA’s Terra satellite. A joint project between the U.S. National Aeronautics and Space Administration and Japan’s Ministry of Economy, Trade, and Industry, ASTER has been acquiring data for 15 years, since March 2000. The archive now contains over 2.8 million scenes; for t...

Characterization of ASTER GDEM elevation data over vegetated area compared with lidar data Wenjian Ni, Guoqing Sun & Kenneth J. Ranson a State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, China b Department of Geographical sciences, University of Maryland, College Park, MD, USA c Biospheric Sciences Branch, NASA's...

This study attempts to investigate the relationship between accuracy of different Digital Elevation Model (DEM) and fractal dimension D solve problem determining optimal catchment area threshold in plain watersheds. In this study, dimensions Shuttle Radar Topographic Survey (SRTM) V4.1 DEM, Hydrology 1K (HYDRO1K) Advanced Spaceborne Thermal Emission Reflection Radiometer Global (ASTER GDEM) wit...

Currently available high-resolution digital elevation model (DEM) is not particularly useful to geologists for understanding the long-term changes in fluvial landforms induced by tectonic uplift, although DEMs that are generated from satellite stereo images such as ZiYuan-3 (ZY3) include characteristics with significant coverage and rapid acquisition. Since an ongoing analysis of systems lackin...

A landslide susceptibility assessment for the Three Gorges (TG) region (China) was performed in a Geographical Information System (GIS) environment and Persistent Scatterer (PS) InSAR derived displacements were used for validation purposes. Badong County of TG was chosen as case study field. Landslide parameters were derived from two datasets. The Advanced Spaceborne Thermal Emission and Reflec...

a r t i c l e i n f o The rapid expansion of high-spatial resolution optical sensors and imagery over the last decade presents exceptional opportunities for quantifying visible attributes of geomorphic systems. In this study, we detail a simple, robust methodology (ChanGeom) to extract continuous channel width and centerline datasets for single-thread channels using freely available high-spatia...

Abstract. Height models are a fundamental part of the geo-information required for various applications. The determination height by aerial photogrammetry, LiDAR or space images is time-consuming and expensive. For with large area coverage, UAVs not economic. freely available ASTER GDEM-3, SRTM, AW3D30 TDM90 can meet requirements.With exception ASTER-GDEM-3, which cannot compete other, digital ...