Abstract
Intrusion into rivers is an important aspect of the tsunami hazard. Tsunamis change their waveform and amplitude when they pass through a river mouth, and tend to increase the mean water level for a long duration of time once they have intruded the river (Tolkova et al., 2015). Understanding the ocean-to-river transition of a tsunami is crucial for predicting tsunami effects upstream, although the transition processes are complicated by a variety of factors such as bathymetry, river discharge, vegetation, and man-made structures like jetties and seawalls. To identify key fundamental mechanisms for the tsunami intrusion into rivers, we conduct laboratory experiments of tsunami-like long waves transitioning from a wide basin (ocean) into a narrow channel (river).References
Tolkova, Tanaka, and Roh (2015): Tsunami observations in rivers from a perspective of tsunami interaction with tide and riverine flow. Pure and Applied Geophysics, 172(3), 953-968.
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