Dynamics of ship-induced solitary wave troughs in Venice Lagoon

Parnell, Kevin, Soomere, Tarmo, Zaggia, Luca, and Rodin, Artem (2015) Dynamics of ship-induced solitary wave troughs in Venice Lagoon. Geophysical Research Abstracts, 17 (EGU2015). 7118.

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Abstract

Based on experiments in the industrial channel of the Venice Lagoon, we demonstrate that ship-induced depressions (Bernoulli wakes) may propagate as long-living strongly nonlinear Riemann waves of depression into shallow water adjacent to navigation channels. Ships of moderate size (blocking coefficient 0.07–0.14) and sailing at low depth Froude numbers (0.37–0.5) produce depressions with a depth up to 2.5 m. The waves of depression decrease in height away from the channel before increasing in very shallow water. As the waves propagate into and through shallow water surrounding the navigation channel, they become strongly asymmetric with the rear of the depression wave becoming extremely steep, similar to a bore, and may be associated with very high water velocities.

Item ID: 38278
Item Type: Article (Abstract)
ISSN: 1607-7962
Date Deposited: 22 Jul 2015 04:31
FoR Codes: 04 EARTH SCIENCES > 0406 Physical Geography and Environmental Geoscience > 040699 Physical Geography and Environmental Geoscience not elsewhere classified @ 90%
05 ENVIRONMENTAL SCIENCES > 0502 Environmental Science and Management > 050205 Environmental Management @ 10%
SEO Codes: 96 ENVIRONMENT > 9611 Physical and Chemical Conditions of Water > 961102 Physical and Chemical Conditions of Water in Coastal and Estuarine Environments @ 60%
88 TRANSPORT > 8802 Water Transport > 880205 Port Infrastructure and Management @ 40%
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