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Land Reclamation Effects on Santos Estuary Inlet Stability

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Climate Change in Santos Brazil: Projections, Impacts and Adaptation Options

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Abstract

During the past two decades, governmental incentives on port expansion have led Santos to be a hotspot of infrastructure investments. Nevertheless, land reclamation, mainly by port terminal construction in estuarine areas, has affected Santos estuary tidal inlet stability, increasing siltation along the estuarine channel. Herein, two scenarios were compared to assess the effects of land reclamation on Santos estuary tidal inlet stability. The baseline scenario (2006) is prior to the construction of two port terminals (EMBRAPORT and BTP) and deepening dredging in Port of Santos, and the foreseen scenario (2014) is posterior to these interventions. The assessment of Santos estuary tidal inlet stability consisted of a new method derived from the classical Area-Prism relationship. The Slice Method enhanced the cross-sectional area estimative accuracy and enabled the evaluation of tidal inlet cross-sectional profile changes. During these 8 years, Santos estuary tidal prism decreased from 55.1 × 106 to 53.6 × 106 m3, tidal inlet got shallower and the cross-sectional area reduced 5.5%. The study confirms that land reclamation reduced Santos estuary tidal prism. Therefore, cumulative effects of land reclamation on tidal inlet stability must be studied to define mitigation strategies for channel siltation.

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Acknowledgements

The authors thank DHI (Danish Hydraulic Institute) for providing a time-limited license for thesis of the Mike 21 FM software, and the first and the third authors thank CAPES (Coordenação de Aperfeiçoamento de Pessoal de Nível Superior) for the funding of their scholarship.

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Authors and Affiliations

  1. Ramboll Environment & Health, São Paulo, SP, Brazil

    Thiago Bezerra Corrêa

  2. School of Civil Engineering, Architecture and Urban Design, University of Campinas (Unicamp), Campinas, SP, Brazil

    Tiago Zenker Gireli & Vinícius de Carvalho Neiva Pinheiro

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  1. Thiago Bezerra Corrêa
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  2. Tiago Zenker Gireli
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  3. Vinícius de Carvalho Neiva Pinheiro
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Correspondence to Thiago Bezerra Corrêa .

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Editors and Affiliations

  1. Santos, São Paulo, Brazil

    Lucí Hidalgo Nunes

  2. Department of Geography, UNICAMP – Instituto de Geociências, Campinas, São Paulo, Brazil

    Roberto Greco

  3. National Center for Monitoring and Early Warning of Natural Disasters (CEMADEN), São José dos Campos, São Paulo, Brazil

    José A. Marengo

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Corrêa, T.B., Gireli, T.Z., Pinheiro, V.d.C.N. (2019). Land Reclamation Effects on Santos Estuary Inlet Stability. In: Nunes, L., Greco, R., Marengo, J. (eds) Climate Change in Santos Brazil: Projections, Impacts and Adaptation Options. Springer, Cham. https://doi.org/10.1007/978-3-319-96535-2_11

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