Results 301 to 310 of about 139,178 (334)

Treatise on the tectonic geomorphology of active faults: The significance of using a universal digital elevation model

Journal of Structural Geology, 2018
This study presents the importance of the accuracy of six digital elevation models (DEMs), in the calculation of the geomorphic indices and the classification of an active fault in the Gulf of Corinth, Greece.
I. Koukouvelas, V. Zygouri, K. Nikolakopoulos, Sotirios Verroios   +3 more
semanticscholar   +1 more source

Using Iterative Orthophoto Refinements to correct Digital Elevation Models (DEM's)

1991
Abstract : A new technique is described that can be used to correct the digital elevation data obtained using digital correlation methods on terrain stereoimages. The new technique takes advantage of the speed of modern computers and the inherent geometric relationship between elevation data and orthophotographs to provide speedy, accurate and nearly ...
openaire   +1 more source

Digital elevation model (DEM) and shaded relief image of Okmok Caldera, 2010

2012
In response to significant morphologic changes in Okmok Caldera due to the phreatomagmatic eruption of Okmok volcano in 2009, a new digital elevation model was acquired to document and quantitatively assess the new volcanic features and altered hydrology within the caldera.This DEM dataset provides elevation data derived from a stereo pair of Worldview-
J. R. Schaefer, J. F. Larsen, J. A. Unema   +2 more
openaire   +1 more source

Machine Learning for Enhancement of Global Digital Elevation Models (DEMs)

2023
Chukwuma John Okolie, Mills, Jon, Adedayo Kelvin Adeleke, Smit, Julian Lloyd   +3 more
openaire   +1 more source

SIBSON (NATURAL NEIGHBOUR) AND NON-SIBSONIAN INTERPOLATION FOR DIGITAL ELEVATION MODEL (DEM)

Survey Review, 2004
AbstractA new interpolation scheme called as “non-Sibsonian interpolation” based on natural neighbours is proposed in [2]. The non-Sibsonian interpolation is reviewed in details and its performance in a Galerkin method for the solution of elliptic partial differential equations is studied in [17].
openaire   +1 more source

Digital elevation models (DEMs)

2023
openaire   +1 more source

Hydrological networks and digital elevation models (DEM) : comparison with ground data

1997
Hydrological modelling uses more and more the drainage network as a basic data. These networks are useful to define quick flows and to define zones near rivers as productive areas, in relation with partial source area concept. The river drawing and surface near the river are very relevant to it.
Puech, C., Adam, A.
openaire   +1 more source

Scale matching of multiscale digital elevation model (DEM) data and the Weather Research and Forecasting (WRF) model: a case study of meteorological simulation in Hong Kong

Arabian Journal of Geosciences, 2014
Chunxiao Zhang, Hui Lin, Min Chen, Liang Yang   +3 more
semanticscholar   +1 more source

OpenDEM Generator: combining open access Digital Elevation Models into a homogenized DEM

2016
OpenDEM Generator is a new Free and Open Source Python tool to combine several existing Digital Elevation Models (DEM) into a unified DEM with homogeneous resolution and proper pixel alignment in a simple way. By just using a configuration file the user is able to download the available input data and to process them subsequently.
Delucchi, Luca, Neteler, Markus Georg
openaire   +1 more source

Soil-landscape modelling using fuzzy c-means clustering of attribute data derived from a Digital Elevation Model (DEM)

, 1998
S. Bruin, A. Stein
semanticscholar   +1 more source