Ocean Systems Engineering

Techno-Press (테크노프레스)
권호 표지
DOI QR코드

DOI QR Code

Evaluation of the new coastal protection scheme at Mamaia Bay in the nearshore of the Black Sea

  • Niculescu, Dragos M. (Department of Mechanical Engineering, University of Galati) ;
  • Rusu, Eugen V.C. (Department of Mechanical Engineering, University of Galati)
  • Received : 2017.08.06
  • Accepted : 2018.01.18
  • Published : 2018.03.25
⟨ Previous Next ⟩

Abstract

The target area of the proposed study, Mamaia beach, is a narrow stretch of sand barrier island that sits between the Siutghiol Lake and the Black Sea. In the northern part of the bay, is located the Midia Port, where between 1966 and 1971 a long extension of 5 km of the offshore was built. Because of this extension, the natural flow of sediments has been significantly changed. Thus, the southern part of the Mamaia Bay had less sand nourishment which meant that the coast was eroding and to prevent it a protection of six dikes was built. After approximately forty years of coastal erosion, the south of the Mamaia Bay had in 2016 a new protection scheme, which includes first of all the beach nourishment and a new dike structure (groins scheme for protection) to protect it. From this perspective, the objective of the proposed study is to evaluate the effectiveness of the old Master plan against the new one by modeling the outcome of the two scenarios and to perform a comparison with a third one, in which the protection dikes do not exist and only the artificial nourishment has been done. In order to assess the wave processes and the current patterns along the shoreline, a complex computational framework has been applied in the target area. This joins the SWAN spectral phase averaged model with the 1D surf model. Furthermore, new UAV technology was also used to map out, chart and validate the numerical model outputs within the target zone for a better evaluation of the trends expected in the shoreline dynamics.

Keywords

Acknowledgement

Supported by : UEFISCDI

References

  1. Booij, N., Ris, R.C. and Holthuijsen, L.H. (1999), "A third generation wave model for coastal regions. Part 1: Model description and validation", J. Geophys. Res., 104C4, 7649-7666.
  2. Cristescu, T.M., Ganea, G., Niculescu, A., Buga, L., Nedelcu, M., Diaconeasa, D., Mateescu, R. and Niculescu, D. (2016), "Wind data analysis for NIMRD's oceanographic measurement point 'estacada Mamaia' ", Cercetari Marine, 46(4), 19-30.
  3. Diaconu, S. and Rusu, E. (2013), The environmental impact of a Wave Dragon array operating in the Black Sea, The Scientific World Journal, ID 498013.
  4. Niculescu, D. and Rusu, E. (2016), "Study of the wind regime in the north western part of the Black sea", Mechanical Testing and Diagnosis, 2, 25-34.
  5. Gasparotti, C. and Rusu, E. (2012), "Methods for the risk assessment in maritime transportation in the Black Sea basin", J. Environ. Protection Ecology, 13(3), 1751-1759.
  6. Ivan, A., Gasparotti, C. and Rusu, E. (2012), "Influence of the interactions between waves and currents on the navigation at the entrance of the danube delta", J. Environ.Protection Ecology, 13, 1673-1682.
  7. Mettlach, T.R., Earle, M.D. and Hsu, Y.L. (2002), "Software design document for the navy standard surf model, version 3.2", Rep. Prepared for Naval Research Laboratory, Stennis Space Center, Miss.
  8. Onea, F.; Raileanu, A. and Rusu, E. (2015), "Evaluation of the Wind Energy Potential in the Coastal Environment of Two Enclosed Seas", Adv. Meteorology, ID 808617.
  9. Onea, F. and Rusu, E. (2016), "Efficiency assessments for some state of the art wind turbines in the coastal environments of the Black and the Caspian seas", Energy Exploration & Exploitation, 34(2), 217-234. https://doi.org/10.1177/0144598716629872
  10. Omer, I., Mateescu, R., Rusu, L., Niculescu, D. and Vlasceanu, E. (2015), "Coastal works extensions on the Romanian tourists littoral, its ecological impacts on the nature bathing areas", J. Environ. Protection Ecology, 16(2), 417-424.
  11. Mateescu, R. (2002), The reconsideration of protection engineering solutions implemented to Mamaia beach Ovidius University Annals of Constructuion, 1(3-4), 423-439.
  12. Rusu, E. and Macuta, S. (2009), "Numerical modelling of longshore currents in marine environment", Environ. Eng. Management J., 8(1), 147-151.
  13. Rusu, E., Conley, D.C. and Coelho, E. F. (2008), "A hybrid framework for predicting waves and longshore currents", J. Mar. Syst., 69, 59-73. https://doi.org/10.1016/j.jmarsys.2007.02.009
  14. Rusu, E. (2014), "Evaluation of the wave energy conversion efficiency in various coastal environments", Energies, 7, 4002-4018. https://doi.org/10.3390/en7064002
  15. Rusu, E. (2016), "Analysis of the effect of a marine energy farm to protect a biosphere reserve", MATEC Web of Conferences, 62, EDP Sciences.
  16. Rusu, L., Butunoiu, D. and Rusu, E. (2014), "Analysis of the extreme storm events in the Black Sea considering the results of a ten-year wave hindcast", J. Environ.Protection Ecology, 15(2), 445-454.
  17. Rusu, L. (2015), "Assessment of the wave energy in the Black Sea based on a 15-year hindcast with data assimilation", Energies, 8(9), 10370-10388. https://doi.org/10.3390/en80910370
  18. Vlasceanu, E., Niculescu, D., Omer I. Rusu, E. and Ivan, A. (2015), "Offshore wave regime investigations towards safety port operations in the transitional zone of the Romanian coast", Proceedings of the 15th International Multidisciplinary Scientific GeoConference SGEM 2015, Book 3, vol 2, 675-682, Albena, Bulgaria, June.
  19. Zanopol, A.T., Onea, F. and Rusu, E. (2014a), "Coastal impact assessment of a generic wave farm operating on the Romanian nearshore", Energy, 72, 652-670. https://doi.org/10.1016/j.energy.2014.05.093
  20. Zanopol, A.T., Onea, F. and Rusu, E. (2014b), "Evaluation of the coastal influence of a generic wave farm operating in the Romanian nearshore", J. Environ. Protection Ecology, 15, 597-605.