Results 11 to 20 of about 874 (206)

Detecting and Mapping Gas Emission Craters on the Yamal and Gydan Peninsulas, Western Siberia

Geosciences, 2021
Rapid climate warming at northern high latitudes is driving geomorphic changes across the permafrost zone. In the Yamal and Gydan peninsulas in western Siberia, subterranean accumulation of methane beneath or within ice-rich permafrost can create mounds ...
Scott Zolkos, Greg Fiske, Tiffany Windholz, Gabriel Duran, Zhiqiang Yang, Vladimir Olenchenko, Alexey Faguet, Susan M. Natali   +7 more
doaj   +1 more source

3D POINT ERRORS AND CHANGE DETECTION ACCURACY OF UNMANNED AERIAL VEHICLE LASER SCANNING DATA [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Unmanned aerial vehicle laser scanning (ULS) has recently become available for operational mapping and monitoring (e.g. for forestry applications or erosion studies).
A. Mayr, M. Bremer, M. Bremer, M. Rutzinger, M. Rutzinger   +4 more
doaj   +1 more source

Hydrogeomorphological analysis and modelling for a comprehensive understanding of flash-flood damage processes: the 9 October 2018 event in northeastern Mallorca [PDF]

Natural Hazards and Earth System Sciences, 2020
A flash-flood event hit the northeastern part of Mallorca on 9 October 2018, causing 13 casualties. Mallorca is prone to catastrophic flash floods acting on a scenario of deep landscape transformation caused by Mediterranean tourist resorts.
J. Estrany, J. Estrany, M. Ruiz-Pérez, M. Ruiz-Pérez, M. Ruiz-Pérez, R. Mutzner, J. Fortesa, J. Fortesa, B. Nácher-Rodríguez, M. Tomàs-Burguera, J. García-Comendador, J. García-Comendador, X. Peña, A. Calvo-Cases, F. J. Vallés-Morán   +14 more
doaj   +1 more source

Multi-temporal UAV based repeat monitoring of rivers sensitive to flood

Journal of Maps, 2021
Multi-temporal repeat monitoring of flood-vulnerable rivers is crucial due to rapid alteration of morphological properties of in-channel landforms. Besides, the characteristics of the river crossing bridges may deteriorate due to flood induced scouring ...
Orkan Özcan, Okan Özcan
doaj   +1 more source

Beyond 2D landslide inventories and their rollover: synoptic 3D inventories and volume from repeat lidar data [PDF]

Earth Surface Dynamics, 2021
Efficient and robust landslide mapping and volume estimation is essential to rapidly infer landslide spatial distribution, to quantify the role of triggering events on landscape changes, and to assess direct and secondary landslide-related geomorphic ...
T. G. Bernard, D. Lague, P. Steer
doaj   +1 more source

Geomorphic time series reveals the constructive and destructive history of Havre caldera volcano, Kermadec arc

Frontiers in Earth Science
Monitoring active seafloor processes requires repeated, comparable surveys to enable change detection. The change detection of the deep ocean floor, however, is rare due to a paucity of repeat data at an appropriate resolution.
E. Spain, R. J. Carey, J. M. Whittaker, V. L. Lucieer, J. M. Fox, J. M. Fox, J. M. Fox, S. J. Watson, F. Caratori Tontini   +8 more
doaj   +1 more source

Comment on “Assessing gully erosion and rehabilitation using multi temporal LiDAR DEMs: Case study from the Great Barrier Reef catchments, Australia” by Khan et al., 2023

International Soil and Water Conservation Research
Geomorphic change detection (GCD) using high resolution topographic data can provide important insights into geomorphological systems. However, considerations must first be given to the mechanisms and dynamics producing landscape change when considering ...
James S. Daley, Andrew P. Brooks, John R. Spencer   +2 more
doaj   +1 more source

Assessing gully erosion and rehabilitation using multi temporal LiDAR DEMs: Case study from the Great Barrier Reef catchments, Australia

International Soil and Water Conservation Research
Millions of dollars are being spent on gully rehabilitation to help reduce excess fine sediment delivery to the Great Barrier Reef (GBR). There is an urgent need for (i) prioritisation of active gullies for rehabilitation and (ii) the development of ...
Sana Khan, Rebecca Bartley, Anne Kinsey-Henderson, Aaron Hawdon   +3 more
doaj   +1 more source

Response to comment by Daley et al., on “Assessing gully erosion and rehabilitation using multi temporal LiDAR DEMs: Case study from the Great Barrier Reef catchments, Australia”

International Soil and Water Conservation Research
Daley et al. (2023a) argue that at least 10–15 years apart Digital Elevation Model (DEM) derived DEMs of Difference (DoD) surveys are needed to detect reliable geomorphic change within the gullied landscapes of the Great Barrier Reef, Australia.
Sana Khan, Rebecca Bartley, Anne Kinsey-Henderson, Aaron Hawdon   +3 more
doaj   +1 more source

Tracking the Evolution of Riverbed Morphology on the Basis of UAV Photogrammetry

Remote Sensing, 2021
Unmanned aerial vehicle (UAV) photogrammetry has recently become a widespread technique to investigate and monitor the evolution of different types of natural processes.
Teresa Gracchi, Guglielmo Rossi, Carlo Tacconi Stefanelli, Luca Tanteri, Rolando Pozzani, Sandro Moretti   +5 more
doaj   +1 more source