very high resolution digital elevation models
Stream Network Delineation from High-Resolution Digital Elevation Models.
... a high degree of re- liability in the accuracy of these data sets when using them as part of impact assessment models (Clarke, ...as digital elevation models derived from Light Detec- ...
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Brief communication: Rapid machine-learning-based extraction and measurement of ice wedge polygons in high-resolution digital elevation models
... cm resolution the thumbnails were assigned a width of 27 pixels ...cm resolution a width of 45 pixels (11.25 m), and at 100 cm resolution a width of 27 pixels (27 ...
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Detection of seasonal cycles of erosion processes in a black marl gully from a time series of high-resolution digital elevation models (DEMs)
... The TLS permits us mainly to locate the different pro- cesses. This first results show that the rainfall pattern, i.e. time series, intensity, and duration, controls the sediment de- livery sequence, but the process of ...
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A physically based 3-D model of ice cliff evolution over debris-covered glaciers
... use high-resolution digital elevation models (DEMs) from unmanned aerial vehicle (UAV) surveys to document the evolution of four ice cliffs on the debris-covered tongue of Lirung ...
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Improved estimation of flood parameters by combining space based SAR data with very high resolution digital elevation data
... with very high resolution digital elevation models as derived from LiDAR measurements (Fowler, ...hydraulic models can be per- formed with sufficient ...with high ...
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DIGITAL ELEVATION MODELS AND SLOPE ANALYSIS IN SOME PART OF PURNA RIVER SUBBASIN, CENTRAL INDIA
... obtained digital elevation models on a near-global scale from 56° S to 60° N, to generate the most complete high-resolution digital topographic database of ...world. ...
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Fusing Digital Elevation Models to Improve Hydrological Interpretations
... the elevation of all stream and open-water referenced pixels to their immediate lowest neighborhood elevations, and (ii) ensuring that all streams and rivers drop monotonously in elevation towards their ...
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Very High Resolution Mapping with the Pléiades Satellite Constellation
... sensor models in order to achieve pairs with strictly corresponding image ...sensor models and coarse elevation data (e.g., the digital elevation model from the Shuttle Radar Topography ...
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Automated identification of potential snow avalanche release areas based on digital elevation models
... a very difficult ...are very difficult to ...the very rough and poorly accessible terrain, the vast size of the re- gion and the lack of avalanche ...uses high spatial resolution digi- ...
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EVALUATION OF HEIGHT ACCURACY FOR DIGITAL ELEVATION MODELS (DEMS) FROM HIGH RESOLUTION STEREO SATELLITE IMAGERY: (WV-3)
... In 2011, Deilami and Hashim, 2011 published a review article on accuracy of using very high resolution satellite imageries for DEM formation. The reviewed imageries include: IKONOS and GeoEye, SPOT5, ...
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Application of Public Domain Satellite-Based DEMs in Natural Hazard Modeling
... computer models, the role of digital elevation model (DEM) has become very important and effective tools in Geohazard ...from very coarse to high resolution which provides ...
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A high resolution synthetic bed elevation grid of the Antarctic continent
... Abstract. Digital elevation models of Antarctic bed topography are smoothed and interpolated onto low- resolution ( > 1 km) grids as current observed topography data are generally sparsely ...
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Improving Accuracy in Earthwork Volume Estimation for Proposed Forest Roads Using a High-Resolution Digital Elevation Model
... Although the accuracy of earthwork volume esti- mates is expected to increase with decreasing spac- ing between consecutive cross-sections, to our know- ledge, there are no studies evaluating and quanti- fying the ...
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On the Very High-Resolution Radar Image Statistics
... The experimental results that larger resolution cell size leads to a more Rayleigh distribution, 371. agrees with common sense, as well as the theory prediction for equivalent number of[r] ...
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How Well Can Spaceborne Digital Elevation Models
... Assessing global digital elevation models using the runway method: The Advanced Spaceborne 348. Thermal Emission and Reflection Radiometer versus the Shuttle Radar Topography Mission Ca[r] ...
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Visualizations of the Doblar Accumulation Basin Based on the UAV Survey
... photogrammetry models of the Olduvai Gorge (Jorayev et al. 2016), models of the farmland topography for suitable site selection for the dam construction (Ajayi, Palmer, and Salubi 2018), monitoring river ...
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Vertical Accuracy Assessment of DSM from TerraSAR-X and DTM from Aerial Photogrammetry on Paddy Fields – Karawang, Indonesia
... DTMs are used to describe terrain or relief models in 3D. DTMs depict actual shapes in the real world and is visualized using graphic computers and virtual reality technology [7]. The utilization of aerial photo ...
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Design of Biomethane Supply System Using Ecodesign Approach and System Dynamics Modelling
... Okordia and Oya in Ikarama community are hosts to Agip and Shell companies, but very little has been documented with respect to the impact of their activities on immediate environment. Based on this, the community ...
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Lagrangian predictability of high-resolution regional models: the special case of the Gulf of Mexico
... We may speculate three possible scenarios of Lagrangian predictability. First, the model reproduces the pattern of the real circulation attractor including its small-scale details and predicts a drifter behavior for long ...
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Uncertainties associated with digital elevation models for hydrologic applications: a review
... Unfortunately, GIS packages do not differentiate between rough and smooth surfaces when applying a slope or provide users with any options when it comes to derivation of terrain parameters. Users cannot choose a ...
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