11th Australasian Conference on Coastal and Ocean Engineering: Coastal Engineering a Partnership with Nature; Preprints of Papers · 1993 · 17 citations · 0 references
Natural SciencesEnvironmental SciencesMarine SciencesEnvironmental ModelingMarine EcologyMarine Environmental ScienceAquatic Contaminant FateCoastal HazardsHarmful Algal BloomsMarine PollutantsMarine PollutionWater PollutionAlgal BloomsEnvironmental Fate Of PollutantsLagoon CirculationLagoonal EnvironmentsPollutant DistributionPollutant Transport ModelingToxic Algal BloomsWater Circulation Modeling
There has been in the last 13 years a marked increase of tourism pressure on the lagoon of Tiahura, (Moorea Island, French Polynesia). This increase may degrade the reef ecosystem. In particular, it has been suggested that the macro algal blooms are caused by waste water discharge. A field and numerical study of the water circulation was undertaken in order to evaluate this impact. The results show the existence of trapping zones where pollutants may accumulate under certain meteorological conditions. To remedy the situation, sewage should be discharged offshore on the reef slope in 30 m depth or used on land.