Results 11 to 20 of about 9,086 (270)

Monitoring Extractive Activity-Induced Surface Subsidence in Highland and Alpine Opencast Coal Mining Areas with Multi-Source Data

Remote Sensing, 2022
Mining developments in alpine coal mining areas result in slow or rapid ground subsidence, which can lead to melting and collapse of permafrost. This paper integrated unmanned aerial vehicle (UAV) images and satellite-based SAR interferometry images to ...
Shuqing Wang, Zechao Bai, Yuepeng Lv, Wei Zhou   +3 more
doaj   +2 more sources

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   +2 more sources

Effects of Digital Elevation Model Resolution on Unmanned Aerial Vehicle-Based Topographic Change Detection in Human-Altered Landscapes

Drones
UAV-based topographic change detection is widely used in geoscience communities. The change detection involves comparison of two digital elevation models (DEMs) produced by UAV surveys, which are affected by the DEM resolution.
Wen Dai, Jiahui Hu, Bo Wang, Mengtian Fan, Yiyang Zhou, Mengmeng Zhang   +5 more
doaj   +2 more sources

Incorporating the effect of ALS-derived DEM uncertainty for quantifying changes due to the landslide in 2011, Mt. Umyeon, Seoul

GIScience & Remote Sensing, 2020
The landslide, which occurred at Umyeon mountain (Mt. Umyeon) in Seoul, Korea in 2011, was a prime example that raised awareness about the landslide in the highly urbanized area.
Mi-Kyeong Kim, Hong-Gyoo Sohn, Seongsam Kim   +2 more
doaj   +2 more sources

Estimating soil degradation in montane grasslands of North-eastern Italian Alps (Italy). [PDF]

Heliyon, 2019
Grasslands cover a large portion of the terrestrial ecosystems, and are vital for biodiversity conservation, environmental protection and livestock husbandry.
Torresani L, Wu J, Masin R, Penasa M, Tarolli P.   +4 more
europepmc   +4 more sources

Integrating hydro-geomorphological adjustments into flood mapping for enhanced risk assessment

Geoenvironmental Disasters
Accurate flood risk assessment is essential for effective risk management, especially as extreme rainfall trends have increased flood frequency and inundation globally. However, rainfall data alone often becomes insufficient in dynamic floodplains, where
Tuhin Mukherjee, N. K. Goel, D. S. Arya, Manohar Arora   +3 more
doaj   +2 more sources

A Short-Time Repeat TLS Survey to Estimate Rates of Glacier Retreat and Patterns of Forefield Development (Case Study: Scottbreen, SW Svalbard)

Resources, 2020
The study presents findings from comparative analyses of high-resolution differential digital elevation models (DEM of Difference—DoD) based on terrestrial laser scanning (TLS) surveys.
Waldemar Kociuba, Grzegorz Gajek, Łukasz Franczak   +2 more
doaj   +2 more sources

Monitoring Change and Recovery of an Embayed Beach in Response to Typhoon Storms Using UAV LiDAR

Drones
The monitoring of beach topographical changes and recovery processes under typhoon storm influence has primarily relied on traditional techniques that lack high spatial resolution. Therefore, we used an unmanned aerial vehicle light detection and ranging
Qiujia Lei, Xinkai Wang, Yifei Liu, Junli Guo, Tinglu Cai, Xiaoming Xia   +5 more
doaj   +2 more sources

A Workflow to Estimate Topographic and Volumetric Changes and Errors in Channel Sedimentation after Disturbance

Remote Sensing, 2019
Light Detection and Ranging (LiDAR) methods, such as ground-based Terrestrial Laser Scanning (TLS), have enabled collection of high-resolution point clouds of elevation data to calculate changes in fluvial systems after disturbance, but are often ...
Samira Nourbakhshbeidokhti, Alicia M. Kinoshita, Anne Chin, Joan L. Florsheim   +3 more
doaj   +2 more sources

MONITORING OF FLUVIAL TRANSPORT IN THE MOUNTAIN RIVER BED USING TERRESTRIAL LASER SCANNING [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
The fluvial transport is the surface process that has a strong impact on the topography changes, especially in mountain areas. Traditional hydrological measurements usually give a good understanding of the river flow, however, the information of the ...
G. Jozkow, A. Borkowski, M. Kasprzak
doaj   +2 more sources