Results 11 to 20 of about 500,057 (260)

Characterization and Geomorphic Change Detection of Landslides Using UAV Multi-Temporal Imagery in the Himalayas, Pakistan

Land
Multi-temporal unmanned aerial vehicle (UAV) imagery and topographic data were used to characterize and evaluate the geomorphic changes of two active landslides (Nara and Nokot) in Pakistan.
Naseem Ahmad, Muhammad Shafique, Mian Luqman Hussain, Fakhrul Islam, Aqil Tariq, Walid Soufan   +5 more
doaj   +3 more sources

Landscape-scale geomorphic change detection: Quantifying spatially variable uncertainty and circumventing legacy data issues [PDF]

Geomorphology, 2015
Abstract Repeat surveys of high-resolution topographic data enable analysis of geomorphic change through digital elevation model (DEM) differencing. Such analyses are becoming increasingly common. However, techniques for developing robust estimates of spatially variable uncertainty in DEM differencing estimates have been slow to develop and are ...
Keelin R Schaffrath, Patrick Belmont, Joseph M Wheaton   +2 more
exaly   +3 more sources

Expecting the expected – learning from the past to provide forward scenarios through geomorphic change detection, monitoring and modeling

Geoenvironmental Disasters
This paper tells the story of a landslide, its origins, its activity and the actions undertaken to mitigate the risks that it poses. The Rotolon landslide is a large Deep-seated Gravitational Slope Deformation (DGSD), located in the Eastern Italian Alps,
G. Bossi, M. Cavalli, M. Mantovani, F. T. Catelan, A. Ballaera, F. Ceccotto, G. Marcato, A Pasuto   +7 more
doaj   +3 more sources

Detection of Beach–Dune Geomorphic Changes by Means of Satellite and Unmanned Aerial Vehicle Data: The Case of Altamura Island in the Gulf of California

Coasts, 2023
Although sandy islands in arid environments are vital protection sites for endemic species, they face constant natural and anthropogenic hazards, such as storm surge impacts and the occasional presence of off-road vehicles.
Francisco Flores-de-Santiago, Luis Valderrama-Landeros, Julen Villaseñor-Aguirre, León F. Álvarez-Sánchez, Ranulfo Rodríguez-Sobreyra, Francisco Flores-Verdugo   +5 more
doaj   +3 more sources

UAS-based geomorphic change detection of incised montane meadow stream channels with low-tech process-based restoration treatments

Landscape Ecology
Abstract Context Montane meadows play an important hydrologic role in headwater catchments, but past land use has largely degraded their condition. Low-tech restoration methods, such as beaver dam analogs (BDAs), are increasingly used to support recovery of incised streams by promoting key geomorphic processes ...
MIGUEL L Villarreal, Villarreal MIGUEL L
exaly   +3 more sources

Change Detection Applications in the Earth Sciences Using UAS-Based Sensing: A Review and Future Opportunities

Drones, 2023
Over the past decade, advancements in collection platforms such as unoccupied aerial systems (UAS), survey-grade GNSS, sensor packages, processing software, and spatial analytical tools have facilitated change detection analyses at an unprecedented ...
Christian G. Andresen, Emily S. Schultz-Fellenz   +1 more
doaj   +2 more sources

Optimising sub-metre resolution 3D geomorphic change detection over large areas using multitemporal airborne laser scanning with Sentinel-1 InSAR and Sentinel-2 optical observations

Remote Sensing of Environment
Simon J Walker, Scott N Wilkinson, Sana Khan   +2 more
exaly   +3 more sources

Assessment of gully development using geomorphic change detection between pre- and post-urbanization scenarios

Environmental Earth Sciences, 2020
Urbanization processes have caused changes in the runoff behavior, especially by impervious surfaces produced by paving and buildings. Impermeable surfaces prevent the infiltration of rainwater, increasing the volume and speed of runoff. Besides, inadequate urban planning coupled with heavy rains promotes the evolution of erosion processes, especially ...
Anesmar Olino de Albuquerque, Osmar Abílio de Carvalho Júnior, Renato Fontes Guimarães, Roberto Arnaldo Trancoso Gomes, Potira Meirelles Hermuche   +4 more
openaire   +3 more sources

Geomorphic Change Detection Using Cost-Effective Structure-from-Motion Photogrammetry: Evaluation of Direct Georeferencing from Consumer-Grade UAS at Orewa Beach (New Zealand) [PDF]

Photogrammetric Engineering & Remote Sensing, 2020
Unmanned aerial systems (UAS) and structure-from-motion photogrammetry are transforming the way we produce topo- graphic data, with applications covering many disciplines in the geosciences, including coastal studies. To overcome limitations of ground control points (GCPs), we evaluate direct georeferencing (DG) of consumer UAS imagery for the cost ...
Bertin, Stéphane, Levy, Benjamin, Gee, Trevor, Delmas, Patrice   +3 more
openaire   +4 more sources

A novel 3D geomorphic change detection framework for large-scale active dump slope using multi-temporal imagery

Journal of Environmental Engineering and Landscape Management
Slope stability of dumps in the mining industry is a critical issue due to frequent incidents involving loss of life, equipment damage, and operational disruptions.
Amit Kumar Mankar, Radhakanta Koner
doaj   +2 more sources