Results 61 to 70 of about 1,085,325 (248)

Pembuatan Digital Elevation Model Resolusi 10m dari Peta RBI dan Survei GPS dengan Algoritma ANUDEM [PDF]

open access: yes, 2014
This study proposes the generation of Digital Elevation Model (DEM) with spatial resolution of 10m x 10m by re-interpolation of elevation data. Data input for this study includes: (1) digitized datum coordinate from RBI map, (2) sample points surveyed by
Indarto, I. (Indarto)   +1 more
core  

Digital Elevation Model Based Hydro‐processing

open access: yesGeocarto International, 2006
Abstract The article describes a newly implemented routine, called DEM hydro‐processing, which was added to the overall capabilities of the ILWIS-GIS package developed at ITC. A few novel approaches have been incorporated within the package allowing the user to derive a realistic river and basin schematization, e.g.
Maathuis, B.H.P., Wang, Lichun
openaire   +2 more sources

Modeling physical and chemical climate of the northeastern United States for a geographic information system [PDF]

open access: yes, 1995
A model of physical and chemical climate was developed for New York and New England that can be used in a GIs for integration with ecosystem models.
Aber, John D.   +4 more
core   +1 more source

Hydrography‐Driven Coarsening of Grid Digital Elevation Models [PDF]

open access: yesWater Resources Research, 2018
AbstractA new grid coarsening strategy, denoted as hydrography‐driven coarsening, is developed in the present study. The hydrography‐driven coarsening is designed to retain the essential hydrographic features of valleys and channels observed in high‐resolution digital elevation models: (1) depressions are filled in the considered high‐resolution ...
Moretti G., Orlandini S.
openaire   +5 more sources

Comparison оf Digital Relief Models

open access: yesНаука. Инновации. Технологии, 2023
Introduction. GIS technologies make it possible to analyze large amounts of spatial data, which include digital elevation models derived from remote sensing data.
S. A. Antonov, S. V. Peregudov
doaj   +1 more source

Airborne photogrammetry and LIDAR for DSM extraction and 3D change detection over an urban area : a comparative study [PDF]

open access: yes, 2013
A digital surface model (DSM) extracted from stereoscopic aerial images, acquired in March 2000, is compared with a DSM derived from airborne light detection and ranging (lidar) data collected in July 2009.
De Maeyer, Philippe   +4 more
core   +1 more source

Digital elevation model quality on digital soil mapping prediction accuracy

open access: yesCiência e Agrotecnologia
Digital elevation models (DEM) used in digital soil mapping (DSM) are commonly selected based on measures and indicators (quality criteria) that are thought to reflect how well a given DEM represents the terrain surface.
Elias Mendes Costa   +2 more
doaj   +1 more source

Height Accuracy of Radargrammetric Generated Digital Elevation Model [PDF]

open access: yes, 2002
The stereoscopic concept used in photogrammetry was successfully extended to the optical sensor of SPOT (System Probatoire d'Observation de la Terre) to generate the digital elevation model (DEM) and to extract the planimetric features. Following this
Abdul Samad, Abdul Hadi
core  

Effect of Digital Elevation Model Resolution on the Simulation of the Snow Cover Evolution in the High Atlas

open access: yesWater Resources Research, 2018
The snow melt from the High Atlas represents a crucial water resource for crop irrigation in the semiarid regions of Morocco. Recent studies have used assimilation of snow cover area data from high‐resolution optical sensors to compute the snow water ...
Mohamed Wassim Baba   +4 more
semanticscholar   +1 more source

Avaliação de Modelos Digitais de Elevação para Estudos Geoecológicos no Maciço da Pedra Branca, Rio de Janeiro, Brasil. [PDF]

open access: yesAnuário do Instituto de Geociências, 2009
Geoprocessing tools have been increasingly used to support the integrated study of geoecological variables, once they allow fast and efficient analysis.
Pedro Henrique Ferreira Coura   +3 more
doaj  

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