Kinematics of breaking tsunami wavefronts: A data set from large scale laboratory experiments.

Baldock, TE, Cox, D, Maddux, T, Killian, J and Fayler, L (2009) Kinematics of breaking tsunami wavefronts: A data set from large scale laboratory experiments.. Coastal Engineering, 56 5-6: 506-516. doi:10.1016/j.coastaleng.2008.10.011

Author Baldock, TE
Cox, D
Maddux, T
Killian, J
Fayler, L
Title Kinematics of breaking tsunami wavefronts: A data set from large scale laboratory experiments.
Journal name Coastal Engineering   Check publisher's open access policy
ISSN 0378-3839
Publication date 2009-05
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.coastaleng.2008.10.011
Volume 56
Issue 5-6
Start page 506
End page 516
Total pages 11
Editor Hans F Burcharth
Place of publication Amstedam, Netherlands
Language eng
Subject 090599 Civil Engineering not elsewhere classified
960902 Coastal and Estuarine Land Management
Abstract This paper provides an overview of a new large scale laboratory data set on the kinematics of breaking tsunami wavefronts. The aim of the experiments was to provide an open access data set for model testing, calibration and verification, with particular emphasis on fluid kinematics in the wave breaking and run-up (swash) zones. The experiments were performed over a composite slope in the tsunami wave basin at the O. H. Hinsdale Wave Research Laboratory at Oregon State University. Data for ten different wave conditions were collected, including non-breaking and breaking waves, and both shore breaks and fully developed long bores. Surface elevation and fluid kinematics were measured with a closely spaced array of surface piercing wave gauges, non-contact ultrasonic wave gauges and four 3-D side-looking Acoustic Doppler Velocimeters. The array was traversed from the nearshore (depth= 0.2 m) to the middle and upper run-up zone, providing kinematic data at 30 cross-shore locations. Video was also recorded from 4 cameras covering the propagation, breaking and run-up zones. Surface elevation, flow velocities and the wave maker displacement were also recorded to provide offshore boundary conditions. The experiments include conditions with wave heights up to 0.55 m, notional wave periods up to 20 s and runup lengths of up to 15.2 m on a 1/30 slope. In terms of the slope in the shoaling and breaker zones, the data correspond to Iribarren numbers in the range of 0.26-5.6. Raw, calibrated and processed data are stored with open access within the OSU Tsunami Wave Basin Experiment Notebook, which provides full access to all the wave maker control signals, data, instrument coordinates, and processing and plotting software. This paper serves as an introduction to the data set, demonstrates data quality and provides an initial analysis of some key parameters that govern the impact of tsunami events, including run-up versus offshore wave conditions and nearshore bore height, the maximum inundation depths at the original shoreline position, and the time to maximum inundation depth and flow reversal. Examples of temporal and convective accelerations and turbulent flow components are also presented to illustrate further details of the kinematics. (C) 2008 Elsevier B.V. All rights reserved.
Keyword Breaking tsunami wavefronts
Overland flow
Tsunami impact
Q-Index Code C1
Q-Index Status Provisional Code

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
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Created: Thu, 03 Sep 2009, 08:16:45 EST by Mr Andrew Martlew on behalf of School of Civil Engineering