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Showing 1 to 20 of 31 for “"SRTM"”.
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Suitability of Aster and SRTM dems, and satellite imagery in detailed geomorphological mapping in Dzanani Area of Makhado Local Municipality, Limpopo Province, Republic of South Africa
… study is to assess the suitability of ASTER and SRTM DEMs, and satellite imagery in detailed geomorphological mapping. Field survey and aerial photo interpretation were used to prepare a reference geomorphological map for comparisons. A similar approach of demarcating landform boundaries from …
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Land based applications of multi-mission Satellite Radar Altimetry
… with the Shuttle Radar Topography Mission (SRTM) in order to assess the quality of the heights within the SRTM and to determine any areas of disagreement. To ensure that any phenomena discovered in the initial investigation are generic, and not limited to the ERS-1 Radar Altimeter (RA), a …
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Global Digital Elevation Model Accuracy Assessment in the Himalaya, Nepal
… vegetation analysis and erosion management. The SRTM and ASTER DEMs each have benefits and drawbacks for various uses in environmental research, but generally the SRTM system was superior. Future research should focus on refining these methods to increase error discrimination.</p>
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UNDERSTANDING THE IMPACTS OF TOPOBATHYMETRIC DATA ON STORM SURGE MODEL PREDICTIONS
… (MARIS), and Shuttle Radar Topography Mission (SRTM, NASA) were applied to a publicly available ADCIRC mesh designed to study storm surge in the GOM. Initially, data from the 30 arc-second 2014 GEBCO grid was interpolated to the ADCIRC mesh and used to run surge simulations for Hurricanes Zeta …
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Estimation of changes in the volume of ice making up Gornergletscher since the little ice age maximum
… Radar Topography Mission digitalelevation model (SRTM DEM) from 1999 were used. The SRTM DEM and digitalelevation models of the glacier, derived from the maps, were processed using ESRFsArcGIS. The 1891 map was found inaccurate within the accumulation area of theglacier at the higher elevation …
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Incipient continental rifting: insights from the Okavango Rift Zone, northwestern Botswana
… Topography Mission Digital Elevation Model (SRTM DEM) data from the Okavango Rift Zone in northwest Botswana are used to map the distribution of rift and basement structures. The distribution of these structures provide useful insights into the early stages of continental rifting. The …
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Site specific radar coverage and land clutter modelling
… It was found that the ASTER GDEM and SRTM 30 m DEM datasets can be used to characterise land topography for all intended areas of interest. It was also found that two LC datasets, namely the National Land Cover 2009, and GlobeLand30 m data sources can be used to characterise land cover …
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Interpretation of tectonics from digital elevation data in the San Gabriel Mountains, CA : evaluation of methods and data sources
… or concavity values derived from analysis of SRTM (30 meter resolution), ASTER (30 meter resolution), USGS (30 meter resolution) and USGS (10 meter resolution) DEMs analysis suggest that USGS DEM-10 meters and SRTM DEM-30 meters are currently the most accurate methods to accurately quantify …
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On the development of a digital elevation model over South Africa using ground and satellite data
… by preparing satellite-based DEMs (AW3D30, SRTM, ASTER, TanDEM-X, and MERIT), assessing the quality of the satellite-based DEMs, selecting candidate DEMs for fusion, modelling candidate DEM errors, and fusing DEMs. The aerial-based DEM from LiDAR is also applied in the assessment of the …
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Arc Hydro data model for Ethiopian watersheds
… this, raw Shuttle Radar Topographic Mission (SRTM) data was processed and a 90m*90m Digital Elevation Model (DEM) was created. Second, drainage lines and watersheds were created using the Arc Hydro tools. Third, six hydro administrative regions were identified based on the flow direction of …
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Analysis and visualisation of digital elevation data for catchment management
… with seven different DEMs (ASTER GDEM1, SRTM, Landform Panorama (OS 50), Landform Profile (OS 10), LandMap, NEXTMap and Bluesky DTMs) and to explore the implications of their use in hydrological analysis and catchment management applications. The research focused on the Wensum catchment …
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Riverine flooding using GIS and remote sensing
… using 30m Shuttle Radar Topographic Mission (SRTM) Digital Elevation Model (DEM) as a critical data input of HEC RAS model. The findings showed that modeling using HEC-RAS and HEC HMS models in a data-poor environment requires intensive data enhancements and adjustments; multiple utilization …
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Glacial Geomorphology of southern Alberta, Canada
… Firstly, Shuttle Radar Topography Mission (SRTM) and Landsat 7 Enhanced Thematic Mapper (Landsat ETM+) data sets were used to map the regional picture. Then, Aerial Photo Investigation (API), ground truthing and sedimentary analyses were employed to provide a detailed, localised focus into …
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Desarrollo de un modelo de geoprocesamiento para la valoración productiva y tributaria de tierras agrícolas en Venezuela
… de un DEM derivado de las imágenes radar SRTM, de imágenes Landsat ETM+ y de información climatológica del área. En definitiva se seleccionaron 19 variables como predictoras del modelo y se obtuvo un ajuste a nivel regional con un pseudo R2 de 0.48, estadísticamente significativo (p≈0), y …
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Framework for Concentrated Strain Deployable Trusses
… coilable boom system and an articulated ATK-ABLE SRTM boom system. It was demonstrated that the concentrated strain approach has the potential to achieve a higher linear compaction ratio and truss performance index for mass efficient deployable trusses than the distributed strain approach and the …
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INVENTORY OF MONGOLIAN GLACIERS FOR THE GLOBAL LAND ICE MEASUREMENTS FROM SPACE (GLIMS) PROGRAM
… study parameterized the glacier outlines using SRTM data, including equilibrium line altitude, mean slope, mean glacier terminus elevation, and aspect. Including data acquired from ASTER GDEM, this study found that surface lowering occurred on 82.3 % of all glaciers from between 2000 to 2008. …
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INVENTORY OF MONGOLIAN GLACIERS FOR THE GLOBAL LAND ICE MEASUREMENTS FROM SPACE (GLIMS) PROGRAM
… study parameterized the glacier outlines using SRTM data, including equilibrium line altitude, mean slope, mean glacier terminus elevation, and aspect. Including data acquired from ASTER GDEM, this study found that surface lowering occurred on 82.3 % of all glaciers from between 2000 to 2008. …
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Surface deformation analysis over a hydrocarbon reservoir using InSAR with ALOS-PALSAR data
… the topographic phase by using a 3 arc-sec SRTM digital elevation model (DEM). The atmospheric artifacts are determined and filtered out based on available spatial and temporal information on processed data. Our analysis has revealed that due to the effective mitigation measures taken by the …
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Identificação e caracterização dos estilos fluviais da Bacia Riacho do Tigre-PB
… the remote sensing and help of the pictures (SRTM) and ASTER GDEM, information obtained in the field with the topographic GPS use PRO-XH - Trimble, identification of types of channels (not confined, semi- confined and confined) delimiting the channel geomorphical units for each of the eight …
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