Evolução morfológica e sedimentológica do Arco Praial de Massaguaçú, litoral norte de São Paulo / Morfological e and sedimntological evution on Massaguaçu Bay Beach,North Costal of São Paulos State

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

This dissertation characterize the morphological and sedimentological evolution of Massaguaçú Bay Beach, São Paulo State, Northeast Brazil, in a Historical and events spatial-temporal scale. Massaguaçú Bay Beach is localized northward of Caraguatatuba Bay and has approximately 7.5Km length. The methodology consisted on the determination of the shoreline changes with Aerophotographic analyses of 1962, 1977, 1994 and 2001, 2006 shoreline was taken with GPS. The DGPS Method was used to obtain 174 two-dimensional profiles and 16 tri-dimensional profiles in 5 field campaigns conducted between November, 2006 and March, 2008. 176 sand samples were collect in the swash zone, next to the last position of each two-dimensional profile. Data showed that almost all beach demonstrated shoreline progradation between 1962 and 1994, this tendency change between 1994 and 2006 with the possibility of increase of the retraction processes. It was observed a great variability in morphological and sedimentological data, this appear to be related with variations on the wave height pattern during the year. It has identified an Erosional Hotspot in the central area of the beach and the beach has divided in five risck areas where the risck increase from the extremities to the center of the beach.

ASSUNTO(S)

baia de caraguatatuba dgps historical and events space-temporal scale zona de erosão acentuada. dgps shoreline changes erosional hotspots. escala espaço-temporal histórica e de eventos variações da linha de costa caraguatatuba bay

ACESSO AO ARTIGO

Documentos Relacionados