Water transport in wake waves from high-speed vessels

Soomere, Tarmo, Parnell, Kevin E., and Didenkulova, Ira (2011) Water transport in wake waves from high-speed vessels. Journal of Marine Systems, 88 (1). pp. 74-81.

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Abstract

A new mechanism producing onshore transport of substantial amounts of water remote from the fairway in wake waves generated by high-speed vessels is described based on high-resolution water surface profiling in Tallinn Bay, the Baltic Sea. In addition to water transported by precursor solitons, an elevation event that arrives in remote areas well after the precursors is able to carry several times as much water as the solitons and the other wave disturbances put together. When it arrives, just before the largest vessel waves, its interaction with the leading waves of wakes may produce water level set-up under groups of high ship waves. Its characteristic position at the study site, just before the highest wave group, suggests that it may be a forced disturbance created by the ship motion, the nature of which could be an almost degenerate undular bore. The backflow of this water potentially contributes to fast removal of sediment from non-equilibrium beaches by forming strong offshore-directed flow during the latter phase of the wake-wave event.

Item ID: 18083
Item Type: Article (Research - C1)
ISSN: 0924-7963
Keywords: vessel waves, wave measurement, nonlinear waves, transport processes, coastal erosion, Baltic Sea
Date Deposited: 18 Aug 2011 03:10
FoR Codes: 04 EARTH SCIENCES > 0406 Physical Geography and Environmental Geoscience > 040699 Physical Geography and Environmental Geoscience not elsewhere classified @ 100%
SEO Codes: 96 ENVIRONMENT > 9699 Other Environment > 969902 Marine Oceanic Processes (excl. Climate Related) @ 100%
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