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Quantification and visualization of flood-induced morphological changes in meander structures by UAV-based monitoring
Engineering Science and Technology, an International Journal ( IF 5.7 ) Pub Date : 2021-06-04 , DOI: 10.1016/j.jestch.2021.05.020
Semih Sami Akay , Orkan Özcan , Füsun Balık Şanlı

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. This study was carried out to quantify and visualize –flood- induced morphological changes in meander structures by UAV-based monitoring. Two-year (2018 and 2019) field surveys were conducted in the Büyük Menderes River (BMR) Basin, Turkey. Multi-temporal orthomosaics and digital surface models (DSMs) were constructed using the Structure from Motion (SfM) technique to evaluate the change of river morphology. Diachronic spatial and volumetric changes in the meander structures were assessed by the Digital Shoreline Analysis System (DSAS) and Digital Elevation Model (DEM) of Difference (DoD) tools. This study shows the importance of mapping and monitoring river basins that have an impact on human life in many ways with evaluating and analyzing the results of extreme events such as floods promptly.



中文翻译:

基于无人机的监测对洪水引起的曲流结构形态变化的量化和可视化

河流流域是地球上最具活力的地形之一,因此,应持续监测河流形态,并在可能的情况下绘制其对环境的影响(即自然灾害)。开展这项研究是为了通过基于无人机的监测来量化和可视化洪水引起的蜿蜒结构的形态变化。在土耳其 Büyük Menderes 河 (BMR) 盆地进行了为期两年(2018 年和 2019 年)的实地调查。使用运动结构 (SfM) 技术构建多时相正射镶嵌和数字表面模型 (DSM),以评估河流形态的变化。通过数字海岸线分析系统 (DSAS) 和数字高程模型 (DEM) 差异 (DoD) 工具评估曲流结构的历时空间和体积变化。

更新日期:2021-06-04
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