Run-up amplification of transient long waves
Abstract
The extreme characteristics of long wave run-up are studied in this paper. First we give a brief overview of the existing theory which is mainly based on the hodograph transformation (Carrier & Greenspan, 1958). Then, using numerical simulations, we build on the work of Stefanakis et al. (2011) for an infinite sloping beach and we find that resonant run-up amplification of monochromatic waves is robust to spectral perturbations of the incoming wave and resonant regimes do exist for certain values of the frequency. In the setting of a finite beach attached to a constant depth region, resonance can only be observed when the incoming wavelength is larger than the distance from the undisturbed shoreline to the seaward boundary. Wavefront steepness is also found to play a role in wave run-up, with steeper waves reaching higher run-up values.
Keywords
Cite
@article{arxiv.1212.5689,
title = {Run-up amplification of transient long waves},
author = {Themistoklis Stefanakis and Shanshan Xu and Denys Dutykh and Frédéric Dias},
journal= {arXiv preprint arXiv:1212.5689},
year = {2020}
}
Comments
25 pages, 17 figures, 44 references. Other author's papers can be downloaded at http://www.denys-dutykh.com/