The objective of this study was to interpret the geomorphic features developed by glaciers at Ashley Schiff Park Preserve and to study whether south part of Ashley Schiff Park Preserve is Hummocky terrain or whether it is just a continuation of folding and faulting process. This required creating a new high-resolution digital elevation model (DEM) based on 2-foot contour interval with 1-meter g...

Forest structure attributes produced from terrestrial laser scanning (TLS) rely on normalisation of the point cloud values from sensor coordinates to height above ground. One method to do this is through the derivation of an accurate and repeatable digital elevation model (DEM) from the TLS point cloud that is used to adjust the height. The primary aim of this paper was to test a number of TLS ...

This paper evaluates the suitability of readily available elevation data derived from recent sensors – the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and the Shuttle Radar Topography Mission (SRTM) – for glaciological applications. The study area is Nevado Coropuna (6426 m), situated in Cordillera Ampato of Southern Peru. The glaciated area was 82.6 km in 1962, based...

Abstract. Quantitative surface analysis through quadratic modelling of Digital Elevation Models (DEMs) is a promising tool for automatically describing the physical environment in ecological studies of terrestrial landscapes. Fundamental topographic variables such as slope, aspect, plan and profile curvature can be simply calculated from the parameters of a conic equation fitted to a DEM window...

in the present study, the soil and water assessment tool (swat 2000) model was tested on both a monthly and yearly basis and applied to the kordan watershed, located in iran. the main objective of the research was to assess the accuracy of the model in sediment-yield and surface water bicarbonate concentration estimation. the attributes of sub-watersheds, tributary channels and the main channel...

Introduction: Site selection analysis for planetary missions requires cartographic data products with high spatial resolution, high precision and quantifiable accuracy. This information allows stakeholders to make informed decisions regarding the usability of datasets, the benefits which could be realized by re-imaging a region, and the degree of unknown in surface features. Digital Elevation M...

High resolution digital elevation models (DEMs) have been used in many applications such as civic planning, military mapping and navigation, natural hazard risk assessment, to name only a few. It has been a long history of using photogrammetry and dense ground surveys to draw the contour lines of the terrain and create the elevation model. Nowadays high precision DEMs with the vertical resoluti...

It is well known that by means of airborne interferometric SAR systems it is possible to generate high precision Digital Elevation Models (DEM), although these platforms are seriously affected by motion instabilities. These deviations are recorded by navigation systems, such as GPS receivers and inertial units. The precision of these systems, and the subsequent off-line processing, determines t...

Penelitian ini dirancang untuk dapat memberikan interpretasi landform dengan melakukan penilaian berdasarkan indek posisi topografi ( Topographic Position Indeks ) data DEM, slope serta elevasi tujuan mengetahui nilai posisis suatu wilayah khususnya di Pulau Lombok menginterpretasikan profil memperhatikan sisi visibilitas yang menjelaskan struktur dan kondisi objek. Analisis digunakan dalam pen...