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TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

Tytuł artykułu

Fluid Mud and Nautical Bottom – Concept and Application in Itajaí Port Complex (Brazil)

Autorzy Pion, L.M.  Alfredini, P. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
EN Considering the demand for mooring larger ships at Brazilian port terminals, both private and public, in a scenario of growing exports, engineering interventions that can provide improvements in the vessel’s maximum allowed dimensions can represent significant profits. Hence, this work presents an approach of Nautical Bottom, defined as the minimum depth in which ships can navigate without significant adverse effects in ship control and maneuverability without physical damage, with the goal of raising the maximum ship draft allowed in nautical spaces with fluid mud beds. Due to its rheological properties, fluid mud, in general, allows for vessels navigate with low or negative under keel clearance, respecting the established Nautical Bottom concepts. In addition, fluid mud layer thickness at port areas can possibly vary according to hydrodynamics and sedimentologic variations. This article presents an analysis of fluid mud thickness variations within the Itajaí Port Complex (Santa Catarina, Brazil) turning basin, where fluid mud layers are up to 2.5 meters thick, by means of analyses of bathymetric surveys and numerical modeling. The Itajaí Port Complex is located at the Itajaí-açu river estuary, which presents high variability of river discharge and suspended sediments. From bathymetric surveys, it is possible to observe fluid mud thickness from 0.5 to 2.5 meters. Numerical simulation results indicate suspended sediment load as a main environmental aspect for fluid mud thickness variations in the study area.
Słowa kluczowe
EN hydrology   oceanology   fluid mud   nautical bottom   Port of Itajai   Itajai Port Complex   fluid mud thickness   hydrodynamics  
Wydawca Faculty of Navigation, Gdynia Maritime University
Czasopismo TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Rocznik 2019
Tom Vol. 13, no. 2
Strony 445--452
Opis fizyczny Bibliogr. 12 poz., rys., tab.
autor Pion, L.M.
  • Hydraulic Technological Center Foundation, Sao Paulo, Brazi
autor Alfredini, P.
  • University of Sao Paulo, Sao Paulo, Brazil
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9. PION, L.M. ALFREDINI, P. Lama Fluida em Regiões Estuarinas – Estudo da Bacia de Evolução dos Portos de Itajaí e Navegantes. Proceedings of VI SEMENGO – Seminário e Workshop em Engenharia Oceânica pp. 115 - 123. Rio Grande, 2014
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Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).
Kolekcja BazTech
Identyfikator YADDA bwmeta1.element.baztech-fb733842-751a-404c-a2d0-311371c1a25a
DOI 10.12716/1001.13.02.24