Morphology and sedimentology of the Itaipú Embayment - Niterói/RJ

Anais da Academia Brasileira de Ciências

Marcus Vinicius S. Salvador¹  Maria Augusta M. Da Silva² 

[1] ,CONSUBNiterói RJ

关键词: coastal dynamics;    coastal sedimentation;    geomorphology;    quaternary;    dinâmica costeira;    sedimentação costeira;    geomorfologia;    quaternário;   

DOI  :  10.1590/S0001-37652002000100009

来源: SciELO

【 摘 要 】

Bathymetric and sedimentological data from water depths between 3 and 28 meters are the basis of a detailed bathymetric map of the Itaipú Embayment and an understanding of its sedimentary dynamics. Shallower than 16 meters the contours are parallel to the shoreline whereas the morphology of the deeper bottom is influenced by the Menina, Mãe, and Pai islands. Medium sand is prevalent, with local variations in more protected or less protected areas. Minor amount of black mud possibly derives from the Itaipú Lagoon. Siliciclastic granules and pebbles may be relict. The Itaipú Embayment’s bottom morphology is controlled by stormy waves and the calmer easternmost part of the embayment presents a tendency to accumulate finer sediments.

【 授权许可】

CC BY   
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