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Experiments by Invited Researchers

 

RODBreak - Wave run-up, overtopping and damage in rubble-mound breakwaters under oblique extreme wave conditions due to climate change scenarios

Project acronym: H+_LUH_03_Basin_RodBreak
Name of Group Leader: João Alfredo Santos
User-Project Title: RODBreak - Wave run-up, overtopping and damage in rubble-mound breakwaters under oblique extreme wave conditions due to climate change scenarios
Facility: Multi-directional Wave and Current Basin
Data Storage Report: DataStorageReport_RODBreak.pdf
Publications: CoastalStructures2019_Lemos_etal.pdf
DefectDiffusionForum_Santos_et_al.pdf
Address to obtain the data: kerpen@fi.uni-hannover.de
jasantos@dec.isel.ipl.pt
Associated DOI data sets: Data Storage Report DOI

Wave breaking, run-up and overtopping and their impact in the stability of rubble mound breakwaters are not adequately characterized yet for climate change scenarios. This project helps by assessing design and maintenance strategies to increase their lifespan and resilience, reducing monetary costs for re-construction and climate change adaptation. It aimed at enlarging the range of wave steepness values analysed in run-up, overtopping and armour layer stability studies, focusing on oblique extreme wave conditions and on their effects on a gentler slope breakwater’s trunk armour and roundhead. This work contributes also with data to improve empirical formulas as well as to validate complex numerical model for wave-structure interaction.

Important research results are the proof of concept for the survey of the breakwater head with the Kinect motion camera as well as for the Smartstones and the Smartifers to characterize the motion of armour layer elements. The measurement of the overtopped volume with the thermal camera still needs improvement. There is plenty of data whose processing is yet to be done. Such data encompass the characterization of incident and reflected waves measured with three arrays of acoustic wave gauges, run-up measured with capacitive wave gauges and overtopped volume measured with load cells. In addition, there is redundancy in the measurement of the water volume in the overtopping tank with one capacitive wave gauge per tank and in the identification of overtopping events.

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