Results 11 to 20 of about 356 (200)

Novel Method for Monitoring Mining Subsidence Featuring Co-Registration of UAV LiDAR Data and Photogrammetry

Applied Sciences, 2022
Addressing the problem that traditional methods cannot reliably monitor surface subsidence in coal mining, a novel method has been developed for monitoring subsidence in mining areas using time series unmanned aerial vehicle (UAV) photogrammetry in ...
Jibo Liu, Xiaoyu Liu, Xieyu Lv, Bo Wang, Xugang Lian   +4 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

Surface Elevation Changes Estimation Underneath Mangrove Canopy Using SNERL Filtering Algorithm and DoD Technique on UAV-Derived DSM Data

ISPRS International Journal of Geo-Information, 2021
Estimating surface elevation changes in mangrove forests requires a technique to filter the mangrove canopy and quantify the changes underneath. Hence, this study estimates surface elevation changes underneath the mangrove canopy through vegetation ...
Norhafizi Mohamad, Anuar Ahmad, Mohd Faisal Abdul Khanan, Ami Hassan Md Din   +3 more
doaj   +1 more source

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   +1 more source

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   +1 more source

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   +1 more source

Quantification and visualization of flood-induced morphological changes in meander structures by UAV-based monitoring

Engineering Science and Technology, an International Journal, 2022
River basins are one of the most dynamic terrains on Earth, therefore, river morphology should be monitored continuously and its effects on the environment (i.e. natural hazards) should be mapped whenever possible.
Semih Sami Akay, Orkan Özcan, Füsun Balık Şanlı   +2 more
doaj   +1 more source

Quantitative Characterization of Coastal Cliff Retreat and Landslide Processes at Portonovo–Trave Cliffs (Conero, Ancona, Italy) Using Multi-Source Remote Sensing Data

Remote Sensing, 2023
The integration of multiple data sources, including satellite imagery, aerial photography, and ground-based measurements, represents an important development in the study of landslide processes.
Nicola Fullin, Enrico Duo, Stefano Fabbri, Mirko Francioni, Monica Ghirotti, Paolo Ciavola   +5 more
doaj   +1 more source

Monitoring Mining Surface Subsidence with Multi-Temporal Three-Dimensional Unmanned Aerial Vehicle Point Cloud

Remote Sensing, 2023
Long-term and high-intensity coal mining has led to the increasingly serious surface subsidence and environmental problems. Surface subsidence monitoring plays an important role in protecting the ecological environment of the mining area and the ...
Xiaoyu Liu, Wu Zhu, Xugang Lian, Xuanyu Xu   +3 more
doaj   +1 more source

Erosion Quantification in Runoff Agriculture Plots by Multitemporal High-Resolution UAS Digital Photogrammetry

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
In this work, we apply close-range photogrammetry with unmanned aircraft systems to quantify erosion with millimetric spatial resolution in agricultural plots. We evaluate the proposed methodology against the traditional runoff method on active plots.
Sergio Arriola-Valverde, Luis Carlos Villalobos-Avellan, Karolina Villagra-Mendoza, Renato Rimolo-Donadio   +3 more
doaj   +1 more source