Recent circulation of costal sediments in beaches of santos during storm events: data for managing the coastal physical environments.
Authors
Christiano Magini
Departamento de Geologia, Universidade Federal do Ceará, Campus do PICI Blc
Joseph Harari
Departamento de Oceanografia Física, Instituto Oceanográfico, Universidade de São Paulo.
Denis Moledo de Souza Abessa
Universidade Estadual Paulista, Campus São Vicente
Keywords:
Sedimentação, areia, Baía de Santos, circulação, impacto físico.
Abstract
The beachs of Santos are situated in Santos Bay, central portion of paulista coast,
in São Paulo state. This beachs are frequently affected by cold fronts with winds and currents from the South. These fronts are
responsible for the removal and transport of sediments (sand) in Santos beaches. In order to quantify this sedimentation the channels of
Santos were analysed, due to their function as box colectors of sediments during storm events. The channels are filled by sands, which
volume in channels 1 to 6 was estimated, by using the length, width and height of sand sedimented in the channels, in the event of 22 - 27
april 2005. The chanels 2, 3 and 1 presented the larger volumes of sands, confirming that the central and SW portion of the beaches of
Santos present higher levels of sedimentation or re-sedimentation. That is due to the transport by ocean waves and currents and currents
from the Channel of the Port of Santos. This central portion suffer invasion of marine water over street and buildings, caracterizated of
geological risc area.
Keywords: Sedimentation, sand, Santos Bay, circulation, physical impact.
