The evolution of subharmonic edge wavepackets on a sloping beach

The evolution of subharmonic edge wavepackets on a sloping beach

A study is made of the temporal and spatial development of subharmonic edge wavepackets which are resonantly excited by a wavetrain normally incident and reflected on a mildly sloping beach. The nonlinear evolution equations of the wavepacket envelopes are solved numerically for a variety of initial...

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Veröffentlicht in:Wave motion 1986, Vol.8 (5), p.399-405
Hauptverfasser: Akylas, T.R., Knopping, S.
Format: Artikel
Sprache:eng
Schlagworte:
Brackish
Coastal oceanography, estuaries. Regional oceanography
Earth, ocean, space
Exact sciences and technology
External geophysics
Freshwater
Marine
Physics of the oceans
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container_issue 5
container_start_page 399
container_title Wave motion
container_volume 8
creator Akylas, T.R.
Knopping, S.
description A study is made of the temporal and spatial development of subharmonic edge wavepackets which are resonantly excited by a wavetrain normally incident and reflected on a mildly sloping beach. The nonlinear evolution equations of the wavepacket envelopes are solved numerically for a variety of initial conditions. It is shown that, under certain conditions, large-scale modulations of edge waves are generated and undergo a recurrence phenomenon. These findings lend support to the belief that modulational instabilities of edge wavepackets could be related to certain long-period oscillatory phenomena observed on natural beaches.
doi_str_mv 10.1016/0165-2125(86)90026-0
format Article
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source Elsevier ScienceDirect Journals Collection
subjects Brackish
Coastal oceanography, estuaries. Regional oceanography
Earth, ocean, space
Exact sciences and technology
External geophysics
Freshwater
Marine
Physics of the oceans
title The evolution of subharmonic edge wavepackets on a sloping beach
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