We compare two independent estimates of the rate of elevation change and geodetic mass balance of the Northern Patagonian Icefield (NPI) between 2000 (3,856 km2) and 2012 (3,740 km2) from space-borne data. The first is obtained by differencing the Shuttle Radar TopographyMission (SRTM) digital elevationmodel (DEM) from February 2000 and a Satellite pour l’Observation de la Terre 5 (SPOT5) DEM f...

DEM can be generated from a wide range of sources including land surveys, Photogrammetry, and Remote sensing satellites. SRTM 30m by The Shuttle Radar Topography Mission (SRTM), the Global Digital Elevation Model Advanced Spaceborne Thermal Emission Reflectance Radiometer (ASTER GDEM) global surface model called ALOS Worldview 3D 30 meter (AW3D30) Land Observing Satellite (ALOS) are satellite-b...

To assess the potential volume of a glacial lake outburst flood (GLOF) more precisely than in previous studies, we analyze ground survey data and remote-sensing digital elevation models (DEMs) around glacial lakes in the Lunana region, Bhutan. Based on a DEM generated from differential GPS ground surveys, we first evaluate the relative accuracies of DEMs produced by the Advanced Spaceborne Ther...

To date, the majority of digital elevation models (DEMs) are generated using photogrammetric methods. Recent remote sensing techniques, such as radar interferometry (InSAR), have also been used to generate high quality DEMs over a great area. Spaceborne high resolution DEMs with almost global coverage, such as SRTM, ACE2 and ASTER-GDEM, were made available to the public in the last few years. T...

The ortho-rectification of satellite images is normally a timeconsuming and expensive task. It can strongly benefit from automatic or semiautomatic procedures in order to avoid field work for ground control survey. This article presents an automated method to automatically georeference satellite images acquired by the ASTER sensor. The method is based on automatic matching of images and Digital...

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 ...

Global Digital Elevation Models (GDEM) are considered very attractive for current research and application areas due to their free and wide range accessibility. The ASTER Global Digital Elevation Model exhibits the highest spatial resolution data of all global DEMs and it is generated for almost the whole globe. Unfortunately, ASTER GDEM data include many artifacts and height errors that decrea...

The objective of this study is to generate a flood hazard map based on geomorphologic approach employing Shuttle Radar Topographic Mission (SRTM) DEM and satellite image data (ASTER and LANDSAT). Supervised classification of satellite images is implemented to characterize land cover types. Moreover, the Modified Normalized Difference Water Index (MNDWI) is undertaken to identify moist surface o...