10.1007/s40095-018-0259-7

Assessment of the wave potential at selected hydrology and coastal environments around a tropical island, case study: Mauritius

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  • Jay Rovisham Singh Doorga*1,
  • Doujhata Chinta1,
  • Oomarsing Gooroochurn1,
  • Arshad Rawat2,
  • Vimal Ramchandur1,
  • Beenesh Anand Motah1,
  • Shane Sunassee3,
  • Chettanand Samyan3,
  1. Physical Oceanography Unit, Mauritius Oceanography Institute, Albion, MU
  2. Physical Oceanography/Marine Geoscience Unit, Department of Continental Shelf and Maritime Zones Administration and Exploration, Prime Minister’s Office, Port-Louis, MU
  3. Technical Unit, Mauritius Oceanography Institute, Albion, MU
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Published in Issue 2018-01-18

How to Cite

Doorga, J. R. S., Chinta, D., Gooroochurn, O., Rawat, A., Ramchandur, V., Motah, B. A., Sunassee, S., & Samyan, C. (2018). Assessment of the wave potential at selected hydrology and coastal environments around a tropical island, case study: Mauritius. International Journal of Energy and Environmental Engineering, 9(2 (June 2018). https://doi.org/10.1007/s40095-018-0259-7
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Abstract

Abstract Waves are the dominant influence on coastal morphology and ecosystem structure of tropical islands. The geographical positioning of Mauritius near to the Tropic of Capricorn ensures that the eastern regions benefit from the persistent southeast trade winds which influence the incoming surface waves. In this study, we present the high dependence of the wave regimes of windward offshore site on the trade winds. The higher occurrence of incoming waves in the winter season directed in the southeast direction indicates that the trade winds are more prevalent in the winter season. Storms within the extratropical South Atlantic, Indian and Pacific oceans generally propagate towards the east such that extratropical South Atlantic swell energy spreads through the entire Indian Ocean. Since waves are very directional and tend to get shadowed by land masses, Mauritius situated in the line of sight from those sources end up in the shadow region due to the geographical location of Reunion island. In this study, we support the explanation on how the western region of the island gets influenced by episodic swell events. A detailed wave energy resource assessment is provided for different targeted coastal environments around the island. It is revealed that the mean wave power observed in the summer season at one of the sites can attain 28.8 kW/m and is found to be lower as compared to the winter season (31.7 kW/m).

Keywords

  • Wave climate,
  • Wave energy,
  • Tropical Island,
  • Statistical analysis,
  • Resource assessment,
  • Indian Ocean
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