Results 21 to 30 of about 17,244 (283)

Extreme flood-driven fluvial bank erosion and sediment loads: direct process measurements using integrated Mobile Laser Scanning (MLS) and hydro-acoustic techniques: Direct measurement of flood-driven erosion using MLS and MBES [PDF]

open access: yes, 2016
Copyright © 2016 John Wiley & Sons, Ltd. This methods paper details the first attempt at monitoring bank erosion, flow and suspended sediment at a site during flooding on the Mekong River induced by the passage of tropical cyclones.
Aalto, Rolf   +7 more
core   +4 more sources

Mitigating systematic error in topographic models for geomorphic change detection: accuracy, precision and considerations beyond off‐nadir imagery [PDF]

open access: yesEarth Surface Processes and Landforms, 2020
Abstract Unmanned aerial vehicles (UAVs) and structure‐from‐motion photogrammetry enable detailed quantification of geomorphic change. However, rigorous precision‐based change detection can be compromised by survey accuracy problems producing systematic topographic error (e.g.
Mike R. James   +3 more
openaire   +3 more sources

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

open access: yesGeosciences, 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   +7 more
doaj   +1 more source

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

open access: yesISPRS 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   +4 more
doaj   +1 more source

Morphological changes, beach inundation and overwash caused by an extreme storm on a low-lying embayed beach bounded by a dune system (NW Mediterranean) [PDF]

open access: yes, 2016
The geomorphological evolution of a low-lying, micro-tidal sandy beach in the western Mediterranean, Pals beach, was characterized using airborne Light Detection and Ranging (LiDAR) data. Data were collected in prior to and six months after the impact of
Duran, Ruth   +4 more
core   +2 more sources

Surface movement and cascade processes on debris cones in temperate high mountain (Picos de Europa, northern Spain) [PDF]

open access: yes, 2019
Producción CientíficaDebris talus is a very common landform in the temperate high mountain, so much so that it is the most representative of the periglacial and nival processes.
Gómez Gutiérrez, Álvaro   +3 more
core   +2 more sources

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

open access: yesNatural 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   +14 more
doaj   +1 more source

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

open access: yesEarth 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

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

open access: yesJournal 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

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

open access: yesEnvironmental 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   +4 more
openaire   +2 more sources

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