Ship-Induced Solitary Riemann Waves of Depression in Venice Lagoon

Authors

Kevin E. Parnall, James Cook University
Tarmo Soomere, Tallinn University of Technoloy
Luca Zaggia, National Research Council of Italy
Artem Rodin, Tallinn University of Technology
Giuliano Lorenzetti, National Research Council of Italy
John Rapaglia, Sacred Heart UniversityFollow
Gian Marco Scarpaf, Università Ca’ Foscari

Document Type

Article

Publication Date

3-6-2015

Abstract

We demonstrate that ships of moderate size, sailing at low depth Froude numbers (0.37–0.5) in a navigation channel surrounded by shallow banks, produce depressions with depths up to 2.5 m. These depressions (Bernoulli wakes) propagate as long-living strongly nonlinear solitary Riemann waves of depression substantial distances into Venice Lagoon. They gradually become strongly asymmetric with the rear of the depression becoming extremely steep, similar to a bore. As they are dynamically similar, air pressure fluctuations moving over variable-depth coastal areas could generate meteorological tsunamis with a leading depression wave followed by a devastating bore-like feature.

Comments

Version posted is the In Press, Corrected Proof, Available online 8 December 2014.

DOI

10.1016/j.physleta.2014.12.004

Recommended Citation

Parnall, K.E. et al. "Ship-Induced Solitary Riemann Waves of Depression in Venice Lagoon." Physics Letters A 379.6 (2015): 555-559.