Tsunami Propagation in Tidal Rivers [Paperback]

Using observations of the 2011-Tohoku and some other tsunamis in rivers as a starting point for analytical and numerical exploration, this book suggests a basis for predicting tsunami impacts in a river after the wave has transitioned into the rivers channel.

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1. Observations of tsunamis in rivers.- How are tsunamis measured?.- Tsunami-induced water accumulation in rivers.- Tsunami modulation by tide: Columbia River.- Tsunami modulation by tide: 2010 Chile tsunami in rivers in Japan.- Bore as a typical tsunami waveform in a river.- 2. First analytical chapter: long wave set-up.- Cross-river integrated shallow-water equations.- Backwater curve of a steady flow.- Backwater set by an intruding wave.- 3. Like tsunamis, tides make rivers deeper.- Laymans Physics: a positive disturbance penetrates farther.- Wave set-up in tidal observations.- Tidal wave set-up in the Yoshida River, Japan.- Tidal wave set-up in the Columbia River, USA.- Dont tidal scientists know all that?.- 4. Tsunami and tidal set-up in rivers: a numerical study.- River models.- Quantifying a rivers response.- Simulation arrangements and results.- First look at the solutions.- Backwater: patterns, relations, numbers.- Two metrics for wave decay with distance travelled.- Back to the real world.- 5. Second analytical chapter: ascending with the wave.- Wave-locked slope, and a new form of the equations.- Unidirectional wave and steady flow.- When channel convergence balances friction.- Excursus into analytical treatment of estuarine tides.- Effect of tidal WLS on a small tsunami ascending a river.- 6. Tsunami rides tides.- Designated dataset: the 2015 Chile tsunami in rivers in Japan.- Metrics for a tsunami amplitude and for the tidal conditions.- Records components: tide, tsunami, background noise.- Correlation between an instant tsunami amplitude and WLS.- Methodology of admittance computations as a function ofl³"