@article{271a8a73ec7946129e03484f771b2e5b,
title = "Effect of bed roughness on tsunami bore propagation and overtopping",
abstract = "The accurate modelling of overtopping of coastal defences by tsunami waves is of vital importance for the formulation of disaster management strategies. To improve knowledge of this phenomena the authors conducted experiments on coastal structure overtopping using bores that were generated by a dam-break mechanism. Three types of structures were tested, namely a coastal dyke, a wall, and a wall of infinite height. The results highlight the necessity to consider the energy present in a bore to determine if a structure will be overtopped or not. As a result of these experiments an empirical formula to determine the height of overtopping given the incident bore height and velocity was validated. The study highlights the importance of clearly modelling the velocity and Froude number of a tsunami. Such experiments should be conducted on rough beds, for which a suitable Manning's n seems to be around 0.06 sm-1/3. The study also contrasted the results obtained to those of the ASCE7 method, and concludes that the Manning's n values recommended in ASCE7 are probably too low.",
keywords = "Dam break, Dykes, Evacuation, Tsunami overtopping",
author = "Miguel Esteban and Roubos, {Jochem Jan} and Kotaro Iimura and Salet, {Jorrit Thomas} and Bas Hofland and Jeremy Bricker and Hidenori Ishii and Go Hamano and Tomoyuki Takabatake and Tomoya Shibayama",
note = "Funding Information: The present work was performed as a part of activities of Research Institute of Sustainable Future Society, Waseda Research Institute for Science and Engineering, Waseda University. The authors would also like to appreciate the support of the Japanese Ministry of Education (Mombukagakusho), and the Graduate Program on Sustainability Science, Global Leadership Initiatve (GPSS-GLI). The laboratory experiments were also financially supported by the Strategic Research Foundation Grant-aided Project for Private Universities from the Japanese Ministry of Education, Culture, Sports, Science and Technology to Waseda University (No. S1311028) (Tomoya Shibayama). TU Delft participation was funded by the Delta Infrastructure and Mobility Initiative [DIMI] and the Erasmus + Master of Science in Marine Engineering and Management (CoMEM) program. Funding Information: The present work was performed as a part of activities of Research Institute of Sustainable Future Society, Waseda Research Institute for Science and Engineering, Waseda University. The authors would also like to appreciate the support of the Japanese Ministry of Education (Mombukagakusho), and the Graduate Program on Sustainability Science, Global Leadership Initiatve (GPSS-GLI) . The laboratory experiments were also financially supported by the Strategic Research Foundation Grant-aided Project for Private Universities from the Japanese Ministry of Education, Culture, Sports, Science and Technology to Waseda University (No. S1311028 ) (Tomoya Shibayama). TU Delft participation was funded by the Delta Infrastructure and Mobility Initiative [DIMI] and the Erasmus + Master of Science in Marine Engineering and Management (CoMEM) program. Publisher Copyright: {\textcopyright} 2019",
year = "2020",
month = apr,
doi = "10.1016/j.coastaleng.2019.103539",
language = "English",
volume = "157",
journal = "Coastal Engineering",
issn = "0378-3839",
publisher = "Elsevier",
}