Abstract
The problem of tsunami wave shoaling and runup in U-shaped bays (such as fjords) and underwater canyons is studied in the framework of 1D shallow water theory with the use of an assumption of the uniform current on the cross-section. The wave shoaling in bays, when the depth varies smoothly along the channel axis, is studied with the use of asymptotic approach. In this case a weak reflection provides significant shoaling effects. The existence of traveling (progressive) waves, propagating in bays, when the water depth changes significantly along the channel axis, is studied within rigorous solutions of the shallow water theory. It is shown that traveling waves do exist for certain bay bathymetry configurations and may propagate over large distances without reflection. The tsunami runup in such bays is significantly larger than for a plane beach.
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Notes
Eq. (29) for the soliton runup height in Choi et al. (2008) has a misprint in the numerical coefficient.
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Acknowledgments
This research is supported particularly by Grants from RFBR (08-05-00069, 08-05-91850, 09-05-91222), Marie Curie network SEAMOCS (MRTN-CT-2005-019374) and EEA Grant (EMP41). Authors thank Utku Kânoğlu, Elena Suleimani and the anonymous reviewer for their useful comments and suggestions.
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Didenkulova, I., Pelinovsky, E. Runup of Tsunami Waves in U-Shaped Bays. Pure Appl. Geophys. 168, 1239–1249 (2011). https://doi.org/10.1007/s00024-010-0232-8
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DOI: https://doi.org/10.1007/s00024-010-0232-8