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Hydrodynamic and Morpho-Sedimentary Characterization of the Potengi Estuary and Adjacent Areas (NE Brazil): Subsidies Towards Oil Spilling Environmental Control
E. P. Frazão and H. Vital
Journal of Coastal Research
Special Issue No. 39. Proceedings of the 8th International Coastal Symposium (ICS 2004), Vol. III (Winter 2006), pp. 1446-1449
Published by: Coastal Education & Research Foundation, Inc.
Stable URL: http://www.jstor.org/stable/25742994
Page Count: 4
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This study presents the Environmental Sensibility Mapping to oil spilling on the Potengi estuary and adjacent coastline. Located on the eastern coastline of the Rio Grande do Norte State and being inserted in the geological context for the Pernambuco-Paraíba coastal basin, this estuary shelters the Natal harbor zone and an oil terminal, centralizing, therefore, important oil transport operations that can cause accidental spillings. This study has the aim to collaborate for the increase of informations about the estuarine environment and contribute to a better management of the question: environment/polluting loads. The methodology used included remote sensing data, collecting, processing and integration of the geomorphologic, oceanographic (temperature, salinity, density, direction and intensity), meteorological (wind speed and direction) and high resolution seismic (bathymetry and sonography) data. Important variations of the salinity mean values (36.32 psu), temperature (28.11°C) and density (22.96 kg/m³) in the estuarine waters presented features belonging to low latitude regions. The water temperature follows the air temperature variations, in the region, with expressive daily amplitudes. In this study, the identification of the estuarine bed morphology through bathymetric and sonographic analysis had the purpose to evaluate the influence of the superficial and bottom currents for the bottom shaping. The estuarine channel is filled by holocene sandy- to silty sediments. The distribution of these textural facies apparently oscillates owing to the tidal cycle and flow intensity.
Journal of Coastal Research © 2006 Coastal Education & Research Foundation, Inc.