Ocean Dynamics

, Volume 62, Issue 5, pp 799–814

Establishing the wave climate influence on the morphodynamics of a coastal lagoon inlet

  • Sandra Plecha
  • Paulo A. Silva
  • Anabela Oliveira
  • João M. Dias
Article
  • 220 Downloads
Part of the following topical collections:
  1. Topical Collection on Physics of Estuaries and Coastal Seas 2010

Abstract

The morphologic changes in estuaries and coastal lagoons are very complex and constitute a challenging task in coastal research. The bathymetric changes result from the combined action of tides, waves, rivers discharge and wind stress in the area of interest. Additionally, an accurate knowledge of the sediment transport is essential to achieve a good morphological characterization. This work establishes the influence of the wave climate on the morphodynamics of the Ria de Aveiro lagoon inlet by analysing the numerical results of the morphodynamic modelling system MORSYS2D. The numerical simulations considered a realistic coupled forcing of tidal currents and waves. The computed sediment fluxes and bathymetric changes are analysed and compared with the erosion and accretion trends obtained from the numerical simulations forced only by tidal currents, in order to establish the wave climate influence. The final bathymetry and the corresponding changes are compared with bathymetric data collected through surveys. It is concluded that: (a) the morphodynamics of the study area is dominated by the wave regime in the lagoon inlet and nearshore areas, while in the inner areas is tidally dominated; and (b) the inclusion of the wave regime forcing constitutes an improvement in order to accurately reproduce the local morphodynamics.

Keywords

Morphodynamics Wave climate Lagoon inlet Model Ria de Aveiro 

References

  1. Abrantes I, Dias JM, Rocha F (2006) Spatial and temporal variability of suspended sediments concentration in Ria de Aveiro lagoon and fluxes between the lagoon and the ocean. J Coast Res SI39:718–723Google Scholar
  2. Ackers P, White WR (1973) Sediment transport: a new approach and analysis. J Hydraul Div 99:2041–2060Google Scholar
  3. Andrade C, Freitas MC, Cachado C, Cardoso AC, Monteiro JH, Brito P, Rebelo L (2002) Coastal Zones. In: Santos FD, Forbes K, Moita R (eds) Climate change in Portugal. Scenarios, impacts and adaptation measures. SIAM Project, Gradiva, pp 173–219Google Scholar
  4. Araújo IGB (2005) Sea level variability: examples from the Atlantic Coast of Europe. PhD Thesis, School of the National Oceanography Centre, Southampton, UK. http://nmec.web.ua.pt/ficheiros/PDFs/iaraujo.pdf
  5. Bertin X, Fortunato AB, Oliveira A (2009a) A modeling-based analysis of processes driving wave-dominated inlets. Cont Shelf Res 29(5):819–834CrossRefGoogle Scholar
  6. Bertin X, Fortunato AB, Oliveira A (2009b) Simulating morphodynamics with unstructured grids: description and validation of an operational model for coastal applications. Ocean Model 28:75–87. doi:10.1016/j.ocemod.2008.11.001 CrossRefGoogle Scholar
  7. Booij N, Ris R, Holthuijsen L (1999) A third-generation wave model for coastal regions. 1. Model description and validation. J Geophys Res 104(7):649–666Google Scholar
  8. Capitão RP, Fortes CJ, Carvalho MM (1997) Análise da dinâmica costeira no troço cabo mondego - estuário do mondego. Erosões em buarcos. Estudo de agitação marítima. Tech. Rep. 167/97 NPP, LNEC, Lisbon, PortugalGoogle Scholar
  9. Cayocca F (2001) Long-term morphological modelling of a tidal inlet: the Arcachon Basin, France. Coast Eng 42:115–142CrossRefGoogle Scholar
  10. Coelho CDB (2005) Riscos de Exposição de Frentes Urbanas para Diferentes Intervenções de Defesa Costeira. PhD Thesis, Aveiro, Portugal, pp. 404. http://biblioteca.sinbad.ua.pt/teses/2005001720
  11. Coli AB (2003) Estimação de regimes de agitação marítima em locais onde não existam dados. In 3as Jornadas Portuguesas de Eng. Costeira e Portuária. Aveiro, PortugalGoogle Scholar
  12. Costa M, Baptista R, Rusu L (2003) Vinte anos de dados de agitação marítima na costa portuguesa. In: 3as Jornadas Portuguesas de Eng. Costeira e Portuária. Aveiro, PortugalGoogle Scholar
  13. Davidson MA, Morris BD, Turner IL (2009) A simple numerical model for inlet sedimentation at intermittently open-close coastal lagoons. Cont Shelf Res 29:1975–1982CrossRefGoogle Scholar
  14. Dias JM, Lopes JF (2006) Implementation and assessment of hydrodynamic, salt and heat transport models: the case of Ria de Aveiro lagoon (Portugal). Environ Model Softw 21:1–15CrossRefGoogle Scholar
  15. Dias JA, Ferreira MC, Pereira AR (1994) Estudo Sintético de Diagnóstico da Geomorfologia e da Dinâmica Sedimentar dos Troços Costeiros entre Espinho e a Nazaré. e-books: http://w3.ualg.pt/∼jdias/JAD/eb_EspinhoNazare.html
  16. Dias JM, Lopes JF, Dekeyser I (1999) Hydrological characterization of Ria de Aveiro, Portugal, in early summer. Oceanol Acta 22(5):473–485CrossRefGoogle Scholar
  17. Dias JM, Lopes JF, Dekeyser I (2000) Tidal propagation in Ria de Aveiro Lagoon, Portugal. Phys Chem Earth 25(4):369–374CrossRefGoogle Scholar
  18. Dias JM, Sousa MC, Bertin X, Fortunato AB, Oliveira A (2009) Numerical modeling of the impact of the Ancão inlet relocation (Ria Formosa, Portugal). Environ Model Softw 24:711–725CrossRefGoogle Scholar
  19. Elgar S, Gallagher EL, Guza RT (2001) Nearshore sandbar migration. J Geophys Res 106(C6):11623–11627CrossRefGoogle Scholar
  20. Ferreira Ó (1993) Morfodinâmica de Praias Expostas: Aplicação ao Sector Costeiro Aveiro—Cabo Mondego, PhD thesis, Faro, Portugal, pp. 337Google Scholar
  21. Ferreira Ó, Dias J, Taborda R (2008) Implications of sea-level rise for continental Portugal. J Coast Res 24(2):317–324CrossRefGoogle Scholar
  22. Fortunato AB, Oliveira A (2004) A modeling system for long-term morphodynamics. J Hydraul Res 42(4):426–434Google Scholar
  23. Fortunato AB, Oliveira A (2007) Improving the stability of a morphodynamic modeling system. J Coast Res SI 50:486–490Google Scholar
  24. Fortunato AB, Pinto L, Oliveira A, Ferreira JS (2002) Tidally generated shelf waves off the western Iberian coast. Cont Shelf Res 22:1935–1950CrossRefGoogle Scholar
  25. Fortunato AB, Bertin X, Oliveira A (2009) Space and time variability of uncertainty in morphodynamic simulations. Coast Eng 56:886–894CrossRefGoogle Scholar
  26. Kraus NC, Larson M, Wise R (1999) Depth of closure in beach-fill design. Proceedings of the 12th National Conference on Beach Preservation Technology: 271–286, Florida Shore and Beach Preservation AssociationGoogle Scholar
  27. Larangeiro SHCD, Oliveira FSBF (2003) Assessment of the longshore sediment transport at Buarcos beach (West coast of Portugal) through different formulations. In: CoastGis’03, GenovaGoogle Scholar
  28. Oliveira A, Fortunato AB, Dias JM (2007) Numerical modeling of the Aveiro inlet dynamics, J.M. Smith (ed) Proceedings of the 30th International Conference on Coastal Engineering 4:3282–3294, World Scientific Publishing CoGoogle Scholar
  29. Picado A, Dias JM, Fortunato AB (2010) Tidal changes in estuarine systems induced by local geomorphologic modifications. Cont Shelf Res 30:1854–1864CrossRefGoogle Scholar
  30. Pires AR, Freitas MC, Andrade C, Taborda R, Ramos R, Pacheco A, Ferreira Ó, Bezerra M, Cruces A (2011) Morphodynamics of an ephemeral tidal inlet during a life cycle (Santo André Lagoon, SW Portugal). J Coast Res SI64:1565–1569Google Scholar
  31. Plecha S (2011) Contribution to the study of the Ria de Aveiro inlet morphodynamics. PhD thesis, Aveiro, Portugal, pp. 163. http://nmec.web.ua.pt/ficheiros/PDFs/teseSandra.pdf
  32. Plecha S, Rodrigues S, Silva P, Dias JM, Oliveira A, Fortunato AB (2007) Trends of bathymetric variations at a tidal inlet. Proceedings of the 5th IAHR Symposium on River, Coastal and Estuarine Morphodynamics, Enschede, The Netherlands, Eds M. Dohmen-Janssen & S. Hulscher, pp. 19–23. ISBN: 0415453631Google Scholar
  33. Plecha S, Silva PA, Vaz N, Bertin X, Oliveira A, Fortunato AB, Dias JM (2010) Sensitivity analysis of a morphodynamic modeling system applied to a coastal lagoon inlet. Ocean Dyn 60:275–284CrossRefGoogle Scholar
  34. Rodrigues M, Oliveira A, Queiroga H, Fortunato AB, Zhang YJ (2009) Three dimensional modeling of the lower trophic levels in the Ria de Aveiro (Portugal). Ecol Model 220:1274–1290CrossRefGoogle Scholar
  35. Sousa M, Dias JM (2007) Hydrodynamic model calibration for a Mesotidal Lagoon: the case of Ria de Aveiro (Portugal). J Coast Res SI50:1075–1080Google Scholar
  36. Sutherland J, Peet AH, Soulsby RL (2004) Evaluating the performance of morphological models. Coast Eng 51:917–938CrossRefGoogle Scholar
  37. Teixeira SLRB (1994) Dinâmica Morfosedimentar da Ria de Aveiro Portugal. PhD thesis, Lisbon, Portugal, pp. 396Google Scholar
  38. Tolman HL, Balasubramaniyan B, Burroughs LD, Chalikov DV, Chao YY, Chen HS, Gerald VM (2002) Development and implementation of wind generated ocean surface wave models at NCEP. Weather Forecast 17:311–333CrossRefGoogle Scholar
  39. Tung TT, Walstra D-JR, van de Graaff J, Stive MJ (2009) Morphological modeling of tidal inlet migration and closure. J Coast Res SI56:1080–1084Google Scholar
  40. van de Graaff J, van Overeem J (1979) Evaluation of sediment transport formulae in coastal engineering practice. Coast Eng 3:1–32CrossRefGoogle Scholar
  41. Vaz N, Dias JM, Leitão PC, Nolasco R (2007) Application of the Mohid-2D model to a mesotidal temperate coastal lagoon. Comput Geosci 33:1204–1209CrossRefGoogle Scholar
  42. Vaz N, Dias J, Leitao PC (2009) Three-dimensional modelling of a tidal channel: The Espinheiro Channel (Portugal). Cont Shelf Res 29:29–41CrossRefGoogle Scholar
  43. Work PA, Guan J, Hayter EJ, Elçi S (2001) Mesoscale model for morphological change in tidal inlets. J Wateway, Port, Coast Ocean Eng 127(5):282–289CrossRefGoogle Scholar
  44. Zhang Y, Baptista AM, Myers EP (2004) A cross-scale model for 3D baroclinic circulation in estuary-plume-shelf systems: I. Formulation and skill assessment. Cont Shelf Res 110(10):1431–1456Google Scholar

Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Sandra Plecha
    • 1
  • Paulo A. Silva
    • 1
  • Anabela Oliveira
    • 2
  • João M. Dias
    • 1
  1. 1.CESAM, Departamento de FísicaUniversidade de AveiroAveiroPortugal
  2. 2.Departamento de Hidráulica e Ambiente, Núcleo de Estuários e Zonas CosteirasLNEC—Laboratório Nacional de Engenharia CivilLisbonPortugal

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