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首页> 外文期刊>Brazilian Journal of Aquatic Science and Technology >Varia??o Da Morfologia Praial E Identifica??o De Zonas De Eros?o Acentuada (ZEA) Na Enseada Do Itapocorói - SC
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Varia??o Da Morfologia Praial E Identifica??o De Zonas De Eros?o Acentuada (ZEA) Na Enseada Do Itapocorói - SC

机译：ItapocoróiCove-SC海滩形态的变化和强化侵蚀区（ZEA）的识别

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摘要

The main objective of this work was to describe the morphologic variation at Itapocorói Bay – SC, and to identify the development of an erosional hot spot, through the comparison of beach profile data taken before and after the beach nourishment project done by the year of 1999, with the monthly topographic survey obtained at 2008. The results show that the beaches have distinct morphologic behavior due to the increase in the wave energy exposition of the shore. The south portion of the bay is more sheltered, and has flat beach profile slopes (between 2o and 3o) while the northern part, more exposed, shows steeper slopes (5o to 7o) and scarped profiles. Nine years after the nourishment project completed at Pi?arras beach, approximately 50% of the sediment volume was lost, especially at the south end next to the river, where there is a well developed hot spot, which shows rates of volume loss of about 95%. The survey also shown that there is no significant alongshore sediment transport to the north, what reinforces the idea that the cross-shore transport has importance at the erosional process.
机译：这项工作的主要目的是通过比较1999年进行的海滩营养项目之前和之后采集的海滩剖面数据，描述南太平洋Itapocorói湾的形态变化，并确定侵蚀热点的发展。 ，其每月地形调查于2008年获得。结果表明，由于海岸波能暴露的增加，海滩具有明显的形态特征。海湾的南部地区更容易受到庇护，海滩轮廓坡度平缓（介于2o和3o之间），而北部地区则更加裸露，坡度更陡（5o至7o）且轮廓较为陡峭。在Pi？arras海滩完成营养项目的九年后，大约50％的沉积物流失了，特别是在靠近河流的南端，那里有一个发达的热点，表明体积流失率约为95％。调查还显示，北部没有大量的沿岸沉积物运移，这强化了以下观点：跨海岸运移在侵蚀过程中很重要。

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