Landslides, like other natural hazards, such as avalanches, floods, and debris flows, may result in a lot of property damage and human casualties. The volume of landslide deposits is a key parameter for landslide studies and disaster relief. Using remote sensing and digital terrain model (DTM) data, this paper analyzes errors that can occur in calculating landslide volumes using conventional mo...

Kurzfassung: Traditionell werden Datenbanksysteme als reine Datenverwaltungssysteme in unterschiedlichsten Anwendungsgebieten verwendet. Die Nutzung verteilt gehaltener Informationen und eine Verknüpfung mit lokalen Daten wird insbesondere bei der Rolle der Datenbanksysteme als zentrale Integrationsplattform immer wichtiger. Während kommerzielle Systeme proprietäre Schnittstellen als Erweiterun...

Elevation information plays a crucial role in simulations of geophysical flows providing the slope and curvature information required to solve a series of differential equations. Digital Elevation Models (DEMs) used as simulation input diverge in resolution, acquisition time and generation methodology. When more than one elevation data set is available, they can be analyzed to provide an estima...

The study of tail-end effects of typhoon on orography is new to Malaysia. The current study used FY-2D satellite data to investigate the variation of selected parameters of the Typhoon Ketsana system. In situ data, obtained via the radiosonde technique, were used to verify the atmospheric conditions, whereas the Advanced Spaceborne Thermal Emission and Reflection Radiometer Global Digital Eleva...

Relief shading is the most common type of cartographic relief representation for print and digital maps. Manual relief shading results in informative and visually pleasing representations of terrain, but it is time consuming and expensive to produce. Current analytical relief shading can be created quickly, but the resulting maps are not as aesthetically appealing and do not show landscape feat...

Die Kernaufgabe der Flugsicherung ist die Gewährleistung der Sicherheit und Pünktlichkeit des Flugverkehrs. Durch die stetige Zunahme des Flugverkehrs hat die Flugsicherung ihre Kapazitätsgrenze erreicht. Um dennoch eine hohe Sicherheit gewährleisten zu können, müssen die Fluglotsen das Kriterium der Pünktlichkeit zurück stellen. Ironischerweise hat der Versuch der Berücksichtigung des Kundenwu...

In this paper we analyse the effects of different spatial input data resolution on water balance simulation using a simple distributed hydrological model: PCRXAJ model. A data set consisting of land use and digital elevation model at 25 m resolution of Xitiaoxi catchment in South China is used for investigation. The model was first calibrated and validated at 50m cell size, thereafter an aggreg...

By increased rural-urban migration in many African countries, the assessment of changes in catchment hydrologic responses due to urbanization is critical for water resource planning and management. This paper assesses hydrological impacts of urbanization on two medium-sized Zimbabwean catchments (Mukuvisi and Marimba) for which changes in land cover by urbanization were determined through Lands...

The recent release of worldwide SRTM 1 DEM and AW3D30 adds new members to the open global medium resolution (90–30 m ground spacing) digital elevation models. Together with the previously existing SRTM 3 and ASTER GDEM, their quality is of great interest to various scientific applications. This paper uses 1:50,000 DEM in Hubei Province of China as a reference to assess their vertical accuracy i...

The Tibetan Plateau (TP) has been observed by satellite optical remote sensing, altimetry, and gravimetry for a variety of geophysical parameters, including water storage change. However, each of these sensors has its respective limitation in the parameters observed, accuracy and spatial-temporal resolution. Here, we utilized an integrated approach to combine remote sensing imagery, digital ele...