Print Email Facebook Twitter Calibration and preparation of field measurements of oblique wave run-up and overtopping on dikes using laser scanners Title Calibration and preparation of field measurements of oblique wave run-up and overtopping on dikes using laser scanners Author Oosterlo, P. (TU Delft Hydraulic Structures and Flood Risk) Hofland, Bas (TU Delft Hydraulic Structures and Flood Risk) van der Meer, J.W. (TU Delft Hydraulic Structures and Flood Risk; Van der Meer Consulting Bv; IHE Delft Institute for Water Education) Overduin, Maarten (Infram Hydren) Steendam, Gosse Jan (Infram International) Date 2021 Abstract Wave overtopping is typically measured in the field using overtopping tanks. In this paper, an alternative system is developed that uses two laser scanners. The system also measures wave run-up, as well as run-up depths and velocities, both during perpendicular and oblique waves on a dike in the field. The paper considers the first calibration tests with the system in the field, with perpendicular and oblique waves generated by the wave run-up simulator on a grass dike slope. Furthermore, simulations are performed with the numerical wave model SWASH, to gain more insight in the potential performance of the system during actual oblique wave attack during a storm. The run-up is determined from the measured elevation and reflection intensity, which agrees well with the visually observed run-up. Run-up depths and front velocities can be determined accurately as well. The (virtual) wave overtopping discharge can be calculated from the data, which agrees well with the most commonly used overtopping equations for perpendicularly incident waves. Finally, from the simulated run-up data of obliquely incident waves, it is concluded that an estimate can be obtained of the incident wave period and wave angle of incidence at the toe of the structure. Subject DikeLIDARLaser scannerNumerical wave modellingWave overtoppingWave run-up To reference this document use: http://resolver.tudelft.nl/uuid:4d46ab51-b1cd-43e3-ad04-7821733eee45 DOI https://doi.org/10.1016/j.coastaleng.2021.103915 ISSN 0378-3839 Source Coastal Engineering, 167, 1-13 Part of collection Institutional Repository Document type journal article Rights © 2021 P. Oosterlo, Bas Hofland, J.W. van der Meer, Maarten Overduin, Gosse Jan Steendam Files PDF 1_s2.0_S0378383921000752_main.pdf 8.39 MB Close viewer /islandora/object/uuid:4d46ab51-b1cd-43e3-ad04-7821733eee45/datastream/OBJ/view