ISSN 2083-6473
ISSN 2083-6481 (electronic version)




Associate Editor
Prof. Tomasz Neumann

Published by
TransNav, Faculty of Navigation
Gdynia Maritime University
3, John Paul II Avenue
81-345 Gdynia, POLAND
www http://www.transnav.eu
e-mail transnav@am.gdynia.pl
Fluid Mud and Nautical Bottom – Concept and Application in Itajaí Port Complex (Brazil)
1 Hydraulic Technological Center Foundation, Sao Paulo, Brazil
2 Polytechnic School of the University of São Paulo, São Paulo, Brazil
ABSTRACT: 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.
ALFREDINI, P. ARASAKI, E. Engenharia Portuária. São Paulo: Blücher, 2014.
DELTARES. Delft3D-FLOW - Simulation of multi-dimensional hydrodynamics flows and transport phenomena, including sediments. User Manual. Delft: Deltares. 710p. 2014
EGBERT, G. D. EROFEEVA, S.Y. Efficient inverse modeling of barotropic ocean tides. Journal of Atmospheric and Oceanic Technology 19.2 - 183-204, 2002. - doi:10.1175/1520-0426(2002)019<0183:EIMOBO>2.0.CO;2
MCANALLY, W. H. F.ASCE, FRIEDRICHS, C. HAMILTON, D. HAYTER, E. SHRESTA, P. RODRIGUES, H. SHEREMET, A. TEETER, A. Management of Fluid Mud in Estuaries, Bays and Lakes: Present State of Understanding on Character and Behavior. Journal of Hydraulic Engineering (ASCE), 133(1) – 9-38, 2007. - doi:10.1061/(ASCE)0733-9429(2007)133:1(9)
MCLAUGHLIN, R. T. Settling Properties of Suspension. Trans Am Soc Civ Eng, 126, pp 1734-1786, 1961.
MEDEIROS, A. D. A influência da maré e da batimetria sobre a intrusão salina no estuário do rio Itajaí-açu. Master Thesis – Federal University of Rio de Janeiro, 76p, 2003.
PARTHENIADES, E. Cohesive Sediments in Open Channels. Burlington: Elsevier, 352p, 2009.
PIANC – Permanent International Association of Navigation Congresses – “Report of Working Group no. 21”. Harbour Approach Channels Design Guidelines. Brussels, 2014
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
SCHETTINI, C. A. F. Caracterização Física do Estuário do Rio Itajaí-açu, SC. Revista Brasileira de Recursos Hídricos, 7 (1), pp 123-142, 2002 - doi:10.21168/rbrh.v7n1.p123-142
SCHETTINI, C. A. F. TRUCCOLO, E. C. Circulação do baixo estuário do Rio Itajaí. In: Branco M. J. L., Branco, J. O. Estuário do Rio Itajaí-açu, Santa Catarina: caracterização ambiental e alterações antrópicas. Itajaí, SC, Brazil: Editora UNIVALI, pp 13-26, 2009.
TRUCCOLO, E. C. Hidrodinâmcia em frequência Mareal e Submareal do Estuário do Rio Itajaí-açu, SC. PhD Thesis - Federal University of Rio Grande do Sul, 2009.
Citation note:
Pion L.M., Alfredini P.: Fluid Mud and Nautical Bottom – Concept and Application in Itajaí Port Complex (Brazil). TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 13, No. 2, doi:10.12716/1001.13.02.24, pp. 445-452, 2019

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