Results 1 to 10 of about 307 (99)

Dune belt restoration effectiveness assessed by UAV topographic surveys (northern Adriatic coast, Italy) [PDF]

Biogeosciences, 2023
Unoccupied aerial vehicle (UAV) monitoring surveys are used to assess a dune restoration project in the protected natural area of the Bevano River mouth on the northern Adriatic coast (Ravenna, Italy).
R. A. Faelga, L. Cantelli, S. Silvestri, B. M. S. Giambastiani   +3 more
doaj   +4 more sources

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   +3 more sources

Assessing Water Erosion Processes in Degraded Area Using Unmanned Aerial Vehicle Imagery [PDF]

Revista Brasileira de Ciência do Solo, 2019
The use of Unmanned Aerial Vehicles (UAVs) and Structure from Motion (SfM) techniques can contribute to increase the accessibility, accuracy, and resolution of Digital Elevation Models (DEMs) used for soil erosion monitoring. This study aimed to evaluate
Paulo Siqueira Junior, Marx Leandro Naves Silva, Bernardo Moreira Cândido, Fabio Arnaldo Pomar Avalos, Pedro Velloso Gomes Batista, Nilton Curi, Wellington de Lima, John Norman Quinton   +7 more
doaj   +6 more sources

Recent Evolution (1956–2017) of Rodas Beach on the Cíes Islands, Galicia, NW Spain [PDF]

Journal of Marine Science and Engineering, 2019
Sedimentary coastal areas change rapidly and are economically and environmentally important. This research focuses on determining the extent to which natural dynamics and human activity have contributed to visible changes on Rodas, Cíes Islands in ...
Alejandro Gómez-Pazo, Augusto Pérez-Alberti, Xose Lois Otero Pérez   +2 more
doaj   +3 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   +3 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   +1 more source

Precision Evaluation and Fusion of Topographic Data Based on UAVs and TLS Surveys of a Loess Landslide

Frontiers in Earth Science, 2021
In recent years, low-cost unmanned aerial vehicles (UAVs) photogrammetry and terrestrial laser scanner (TLS) techniques have become very important non-contact measurement methods for obtaining topographic data about landslides.
Zhonglei Mao, Zhonglei Mao, Sheng Hu, Sheng Hu, Sheng Hu, Ninglian Wang, Ninglian Wang, Ninglian Wang, Yongqing Long, Yongqing Long   +9 more
doaj   +1 more source

The Role of Bedload Transport in the Development of a Proglacial River Alluvial Fan (Case Study: Scott River, Southwest Svalbard)

Hydrology, 2021
This study, which was conducted between 2010 and 2013, presents the results of direct, continuous measurements of the bedload transport rate at the mouth section of the Scott River catchment (NW part of Wedel-Jarlsberg Land, Svalbard).
Waldemar Kociuba
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

Mapping of coastal landforms and volumetric change analysis in the south west coast of Kanyakumari, South India using remote sensing and GIS techniques

Egyptian Journal of Remote Sensing and Space Sciences, 2017
The coastal landforms along the south west coast of Kanyakumari have undergone remarkable change in terms of shape and disposition due to both natural and anthropogenic interference.
S. Kaliraj, N. Chandrasekar, K.K. Ramachandran   +2 more
doaj   +1 more source