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Applying floodplain geomorphology to flood management (The Lower Vistula River upstream from Plock, Poland)
Open Geosciences ( IF 2 ) Pub Date : 2020-10-14 , DOI: 10.1515/geo-2020-0102
Grzegorz Wierzbicki 1 , Piotr Ostrowski 1 , Tomasz Falkowski 1
Affiliation  

Abstract Using remote sensing extended on geological and topographical maps and verified by the field work, we present the flood management and study the geomorphic features of the floodplain of a large, sand bed, untrained but embanked river in order to determine the flood hazard and to predict future flood scenarios. In geomorphological mapping, we focus on the landforms: crevasse channels and splays, flood basin, chute channels, side arms, floodplain channels, dunes and fields of aeolian sand. We base the flood risk assessment on consultations with environmental engineers who design new technical structures that control inundation (cut-off walls and lattice levees). We describe a levee breach as a result of piping (inner erosion) in a high hydraulic gradient condition and its effect (scour hole) as an erosional landform consistent with the repetitive pattern of erosion and deposition formed by an overbank flow on a floodplain. We reveal an existence of homogenous morphodynamic reaches in the river valley.

中文翻译:

将漫滩地貌学应用于洪水管理(波兰普洛克上游的维斯杜拉河下游)

摘要 使用在地质和地形图上扩展并经过实地工作验证的遥感,我们介绍了洪水管理并研究了大型沙床、未经训练但有堤防的河流漫滩的地貌特征,以确定洪水灾害并确定预测未来的洪水情景。在地貌测绘中,我们专注于地貌:裂缝通道和扇形、洪水盆地、滑槽通道、侧臂、洪泛区通道、沙丘和风积沙地。我们的洪水风险评估基于与环境工程师的协商,这些工程师设计了控制洪水的新技术结构(防渗墙和格子堤)。我们将堤防破裂描述为高水力梯度条件下管道(内侵蚀)及其影响(冲刷孔)作为侵蚀地貌,与漫滩上的堤岸流形成的侵蚀和沉积的重复模式一致。我们揭示了河谷中存在同质的形态动力学河段。
更新日期:2020-10-14
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