Results 1 to 10 of about 17,244 (283)

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   +2 more sources

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   +2 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   +2 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   +2 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 ...
Raymond L. LeBeau, Miguel L. Villarreal, Jerry D. Davis   +2 more
exaly   +2 more sources

AIRBORNE LASER SCANNING CHANGE DETECTION FOR QUANTIFYING GEOMORPHOLOGICAL PROCESSES IN HIGH MOUNTAIN REGIONS [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Disturbance by geomorphic processes is a key factor for current and potential plant species distributions in high mountain regions. We implemented and tested an approach for the detection, quantification, and geomorphological classification of 3D ...
L. Müller, M. Rutzinger, A. Mayr, A. Kollert   +3 more
doaj   +1 more source

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   +1 more source

Detection and attribution of hydrological changes in different climatic and geomorphic regions of China

Frontiers in Earth Science, 2023
Through large-scale hydrological simulation, understanding the impact of different climatic and geomorphic conditions on hydrological variables is valuable for water and land management. However, the related study is still a challenge due to strong environmental diversity in large scale region. The physically-based, national-scale hydrological model in
Huan Liu, Huan Liu, Yangwen Jia, Yangwen Jia, Huidong Su, Huidong Su, Cunwen Niu, Cunwen Niu, Jianhua Wang, Jianhua Wang, Yongde Gan, Peng Hu, Peng Hu, Qin Yang, Qin Yang   +14 more
openaire   +2 more sources

The Use of UAVs for the Characterization and Analysis of Rocky Coasts

Drones, 2021
Rocky coasts represent three quarters of all coastlines worldwide. These areas are part of ecosystems of great ecological value, but their steep configuration and their elevation make field surveys difficult.
Alejandro Gómez-Pazo, Augusto Pérez-Alberti   +1 more
doaj   +1 more source

Assessing Geomorphic Change in Restored Coastal Dune Ecosystems Using a Multi-Platform Aerial Approach

Remote Sensing, 2021
Uncrewed aerial systems (UAS) provide an effective method to examine geomorphic and vegetation change in restored coastal dune ecosystems. Coupling structure-from-motion (SfM) photogrammetry with RGB orthomosaic imagery allows researchers to characterize
Zach Hilgendorf, M. Colin Marvin, Craig M. Turner, Ian J. Walker   +3 more
doaj   +1 more source