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J. Mar. Sci. Eng. 2016, 4(1), 9; doi:10.3390/jmse4010009

Extended Long Wave Hindcast inside Port Solutions to Minimize Resonance

Environmental Hydraulics Institute “IHCantabria”, Universidad de Cantabria, Isabel Torres, 15, 39005 Santander, Spain
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Academic Editor: Charitha Pattiaratchi
Received: 24 November 2015 / Revised: 14 January 2016 / Accepted: 15 January 2016 / Published: 2 February 2016
(This article belongs to the Special Issue Infra-Gravity Waves and Vessel Response)
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Abstract

The present study shows a methodology to carry out a comprehensive study of port agitation and resonance analysis in Geraldton Harbor (Western Australia). The methodology described and applied here extends the short and long wave hindcast outside the harbor and towards the main basin. To perform such an analysis, and as the first stage of the methodology, it is necessary to determine, in detail, both the long and short wave characteristics, through a comprehensive methodology to obtain and to hindcast the full spectral data (short waves + long waves, for frequencies between 0.005 and 1 Hz). Twelve-year spectral hindcast wave data, at a location before the reef, have been modified analytically to include the energy input associated with infragravity waves. A decomposition technique based on the energy balance of the radiation stress of short waves is followed. Predictions for long wave heights and periods at different harbor locations are predicted and validated with data recorded during 2004 to 2009. This new database will ensure an accurate and reliable assessment of long wave hourly data (height, period and currents) in any area within the main basin of the Port of Geraldton, for its present geometry. With this information, two main task will be completed: (1) undertake a forensic diagnosis of the present response of the harbor, identifying those forcing characteristics related to inoperability events; and (2) propose any layout solutions to minimize, change, dissipate/fade/vanish or positively modify the effects of long waves in the harbor, proposing different harbor geometry modifications. The goal is to identify all possible combinations of solutions that would minimize the current inoperability in the harbor. Different pre-designs are assessed in this preliminary study in order to exemplify the potential of the methodology. View Full-Text
Keywords: long wave; harbor agitation; harbor operations; seiche long wave; harbor agitation; harbor operations; seiche
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Diaz-Hernandez, G.; Lara, J.L.; Losada, I.J. Extended Long Wave Hindcast inside Port Solutions to Minimize Resonance. J. Mar. Sci. Eng. 2016, 4, 9.

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