Sungwon Shin, Kwang-Ho Lee, Hyoungsu Park, Daniel T. Cox, Kyuhan Kim


Laboratory experiments were conducted for tsunami inundation to an urban area with large building roughness. The waterfront portion of the city of Seaside which is located on the US Pacific Northwest coast, was replicated in 1/50 scale in the wave basin. Tsunami heights and velocities on the inundated land were measured at approximately 31 locations for one incident tsunami heights with an inundation height of approximately 10 m (prototype) near the shoreline. The inundation pattern and speed were more severe and faster in some areas due to the arrangement of the large buildings. Momentum fluxes along the roads were estimated using measure tsunami inundation heights and horizontal fluid velocities. As expected, the maximum momentum flux was near the shoreline and decreased landward. 3D LES (Large Eddy Simulation) model with two-phase flow was used to compare its simulation results with experimental results. The model results of tsunami heights qualitatively agreed with the data collected from the experiment.


tsunami; inundation; experiment; numerical modeling; large eddy simulation; momentum flux


Baldock, T.E., D. Cox, T. Maddux, J. Killian, L. Fayler. 2009. Kinematics of breaking tsunami wavefronts: a data set from large scale laboratory experiments. Coastal Engineering, 56, 506–516

Cox, D., T. Tomita, P. Lynett, and R.A. Holman. 2008. Tsunami inundation with macroroughness in the constructed environment, Proc. 31st International Conference on Coastal Engineering, ASCE, 1421–1432.

Lee, K.-H., N. Mizutani, Y.-K. Kang. 2010. Applicability of 3D Numerical Wave Tank to Wave Deformation due to A Slit-Type Caisson Breakwater with Complex Geometry. Annual Journal of Civil Engineering in the Ocean, JSCE, 26, 69-74.

Lynett, P.J. 2007. Effect of a shallow water obstruction on long wave runup and overland flow velocity. J. of Waterway, Port, Coastal and Ocean Engineering, 133 (6), 455–462.

Rueben, M., R. Holman, D. Cox, S. Shin, J. Killian, and J. Stanley. (2011). Optical measurements of tsunami inundation through an urban waterfront modeled in a large-scale laboratory basin. Coastal Engineering, 58, 229 – 238.

Tomita, T., K. Honda, and T. Kakinuma. 2006. Application of three-dimensional tsunami simulator to estimation of tsunami behavior around structures. Proc. 30th International Conference on Coastal Engineering, ASCE, 1677-1688.

USGS Tsunami Pilot Study Working Group. 2006. Seaside, Oregon Tsunami Pilot Study – Modernization of FEMA Flood Hazard Maps. Open-File Report 2006-1234. US Department of the Interior, US Geological Survey.

Full Text: PDF

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.