Results 11 to 20 of about 501,588 (251)

Modelling the dynamics of a large rock landslide in the Dolomites (eastern Italian Alps) using multi-temporal DEMs [PDF]

open access: yesPeerJ, 2018
Latest advances in topographic data acquisition techniques have greatly enhanced the possibility to analyse landscapes in order to understand the processes that shaped them.
Ricarda Gatter   +3 more
doaj   +2 more sources

A new Greenland digital elevation model derived from ICESat-2 during 2018–2019 [PDF]

open access: yesEarth System Science Data, 2022
Greenland digital elevation models (DEMs) are indispensable to fieldwork, ice velocity calculations, and mass change estimations. Previous DEMs have provided reasonable estimations for all of Greenland, but the time span of applied source data may lead ...
Y. Fan   +8 more
doaj   +1 more source

Comparing Methods for Interpolation to Improve Raster Digital Elevation Models [PDF]

open access: yes, 2012
Digital elevation models (DEMs) are available as raster files at 100m, 30m, and 10m resolutions for the contiguous United States and are used in a variety of geographic analyses. Some projects may require a finer resolution.
Guarneri, J. C., Weih, R. C., Jr.
core   +3 more sources

Abrasive wear behaviour of 27MnB5 steel used in agricultural tines [PDF]

open access: yes, 2020
Understanding the wear mechanisms in wear parts is a crucial element of tribological investigation, particularly in agricultural applications where the knowledge about abrasive micro-mechanisms of soil engaging tools are limited. In the current research,
De Baets, Patrick   +5 more
core   +2 more sources

RESEARCH ON A DEM COREGISTRATION METHOD BASED ON THE SAR IMAGING GEOMETRY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Due to the systematic error, especially the horizontal deviation that exists in the multi-source, multi-temporal DEMs (Digital Elevation Models), a method for high precision coregistration is needed.
Y. Niu   +8 more
doaj   +1 more source

Use of HAND terrain descriptor for estimating flood-prone areas in river basins

open access: yesRevista Brasileira de Ciências Ambientais, 2021
The flood hazard mapping in a river basin is crucial for flooding risk management, mitigation strategies, and flood forecasting and warning systems, among other benefits.
Ana Alice Rodrigues Dantas   +1 more
doaj   +1 more source

EVALUATION OF AIRBORNE L- BAND MULTI-BASELINE POL-INSAR FOR DEM EXTRACTION BENEATH FOREST CANOPY [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
DEM beneath forest canopy is difficult to extract with optical stereo pairs, InSAR and Pol-InSAR techniques. Tomographic SAR (TomoSAR) based on different penetration and view angles could reflect vertical structure and ground structure.
W. M. Li   +4 more
doaj   +1 more source

Suitability of ground-based SfM-MVS for monitoring glacial and periglacial processes [PDF]

open access: yes, 2016
Photo-based surface reconstruction is rapidly emerging as an alternative survey technique to lidar (light detection and ranging) in many fields of geoscience fostered by the recent development of computer vision algorithms such as structure from motion ...
Carturan, Luca   +6 more
core   +2 more sources

Configurational Entropy for Optimizing the Encryption of Digital Elevation Model Based on Chaos System and Linear Prediction

open access: yesApplied Sciences, 2021
A digital elevation model (DEM) digitally records information about terrain variations and has found many applications in different fields of geosciences. To protect such digital information, encryption is one technique.
Xinghua Cheng, Zhilin Li
doaj   +1 more source

Assessing performance of conservation-based Best Management Practices: Coarse vs. fine-scale analysis [PDF]

open access: yes, 2010
Background/Questions/Methods Animal agriculture in the Spring Creek watershed of central Pennsylvania contributes sediment to the stream and ultimately to the Chesapeake Bay.
Denise A. Piechnik   +2 more
core   +2 more sources

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