digital terrain models
Influence of artefacts in marine digital terrain models on habitat maps and species distribution models: a multiscale assessment
... produce Digital Terrain Models (DTM). Terrain attributes ...to terrain attributes, their impact on ecological analyses is however rarely ...and models built from altered data and ...
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Development of topographic database using global digital terrain models and medium resolution satellite imageries
... At present DTM is collected manually through stereo photogrammetric compilation of aerial photos which is time consuming and tedious. With New technology, it is found that manual data captured which has been replaced ...
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Accuracy Assessment of Digital Terrain Models of Lowland Pedunculate Oak Forests Derived from Airborne Laser Scanning and Photogrammetry
... Digital terrain models (DTMs) present important data source for different applications in environmental disciplines including ...airborne digital photogrammetry or airborne laser scanning ...
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Filtering of digital terrain models by 2D Singular Spectrum Analysis
... using digital terrain ...denoising digital terrain models (DTMs); and (c) generalising DTMs, that is, removing non-noise high-frequency components from ...
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Comparative Analysis of the Digital Terrain Models Extracted from Airborne LiDAR Point Clouds Using Different Filtering Approaches in Residential Landscapes
... specific terrain situations, re- mains a challenging ...changing terrain, areas with high densities of non-ground objects and complicated landscapes however, they suggested that fusion of multi-sources of ...
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A new method for determination of most likely landslide initiation points and the evaluation of digital terrain model scale in terrain stability mapping
... a terrain stability ...a terrain stability model on each downslope path from ridge to ...of terrain stability may be used with this approach, which here is illustrated using results from SINMAP, and ...
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Interpretation of Groundwater Flow into Fractured Aquifer
... A lineament is usually defined as a straight or curve lin- ear feature to be seen on the ground surface. Lineaments can be manmade structures such as roads and canals or geological structures such as faults/fractures, ...
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Opportunities from low-resolution modelling of river morphology in remote parts of the world
... morphodynamic models require de- tailed inputs describing initial morphology and boundary conditions, the model proposed here is able to describe the longitudinal evolution of a river reach at non-detailed spa- ...
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Digital Terrain Modeling Of The Buna River System And Of The Northwestern Flood Plain In Albania
... two digital terrain models (DTM) were built ...integrated digital database which includes the topographic and bathymetric surveys undertaken jointly by the Albanian and Montenegrin project ...
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Calibrating mars orbiter laser altimeter pulse widths at mars science laboratory candidate landing sites
... Accurate estimates of surface roughness allow quantitative comparisons between planetary terrains. These comparisons enable us to improve our understanding of commonly occurring surface processes, and develop a more ...
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Accuracy of digital terrain model and its application in forestry
... In this paper, some selected constructions of DTM based on he above mentioned data were tested using several software products, specifi cally TopoL xT 7.0.17 DMT program (traditional and massive usage in forestry), Atlas ...
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Design of Biomethane Supply System Using Ecodesign Approach and System Dynamics Modelling
... in terrain characterisation in a tropical region was carried out on the Sungai Patah subwatershed in the interior of Sarawak, East ...for terrain characterisation in regions similar to the study area, by ...
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A development and application of GIS in Whanganui Catchment based river environment classification system : a thesis presented in partial fulfilment of the requirements for the degree of Master in Resource and Environmental Planning, Massey University
... This project focuses on generating a Digital Terrain Model DTM for the Whanganui river catchment to determine Whanganui catchment boundaries and a series of hydrology parameters such as [r] ...
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Study of Beijiang catchment flash-flood forecasting model
... Liuxihe Model (Chen et al., 2008, 2011) is a physically-based distributed hydrological model mainly for catchment flood forecasting. The model is divided into several sub-models, including the Basin Digitization ...
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The application of GIS based decision tree models for generating the spatial distribution of hydromorphic organic landscapes in relation to digital terrain data
... from Digital Elevation Models (DEMs) acquired using airborne LIDAR (Light Detection and Rang- ing) ...existing digital data collected from other sources (soil type, geological sub- strate and ...
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Comparison of Headwater Stream Origin Determination Methods
... The final approach evaluated the 30-meter DEM and 2-meter LIDAR grids using a relatively unknown terrain analysis module, TauDEM. The stream origin information extracted from the DEM using TauDEM produced inferior ...
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Soil erosion
... A computer program analyzes the digital elevation model and outputs a digital terrain model; it models surface configuration by using topographic indices computed for surface points corr[r] ...
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Optimisation of LiDAR derived terrain models for river flow modelling
... The findings of the study clearly reveal that hydraulic char- acteristics (e.g. flow vectors) are less realistic in geometry I compared to the LiDAR derived geometry II. The cross- sectional comparisons of flow velocity ...
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Study of the LiDAR accuracy in mapping forest road alignments and estimating the earthwork volume
... Today total station and LiDAR laser scanner are used for many tasks in different applications such as geodesy, engineering, architectural and mining surveys with different accuracy level. We examined the accuracy of ...
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Evaluating digital terrain indices for soil wetness mapping – a Swedish case study
... The transect data for soil wetness were used to validate the digital terrain indices through direct point-by-point compar- isons (of each 2 m × 2 m cell). This was done using the mul- tivariate statistical ...
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