Banca de QUALIFICAÇÃO: CECÍLIA ALVES DE OLIVEIRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : CECÍLIA ALVES DE OLIVEIRA
DATA : 21/07/2016
HORA: 14:30
LOCAL: Sala 01 PPGG
TÍTULO:

SEABED HETEROGENEITY OF THE CONTINENTAL SHELF ADJACENT TO PONTA NEGRA, NATAL-RN

PALAVRAS-CHAVES:

COASTAL EROSION, SEDIMENTOLOGY, COASTAL MANAGEMENT

PÁGINAS: 26
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Geociências
RESUMO:

The morphology of 
coastal areas is constantly changing due to interaction of 
natural and anthropogenic processes. Sometimes the actions 
of these processes on the coast line can cause erosion 
problems, causing environmental impacts and socio-economic 
losses. A knowledge of natural and anthropogenic factors 
that act in coastal dynamics are essential for preventive 
action. The aim of this study is the geological mapping of 
marine substrate adjacent the beaches of Ponta Negra and 
Barreira D'agua, Natal, Brazil, in an area under intense 
coastal erosion. The methodology consisted of the collection 
of surface sediment samples of the continental shelf, 
analyzed for particle size, composition and presence of 
organic matter. Later integrated with pre-existing data such 
as geophysical  (single and multbeam bathymetry, 
sonography) and hydrodynamic (waves, currents, tides) data. 
The results  indicate that the grain size of the sediments 
that make up the marine substrate  increases with depth, 
have strong predominance of sand fraction (79%) mainly 
coarse sand, followed by medium sand. The presence of 
carbonate is marked throughout the area, and also increases 
with depth. The siliciclastic sediments are found near the 
shoreline, while bioclastic sediments occur predominantly 
after the isobath of 10m. This information should be taken 
into account in the preparation of the recovery measures the 
area, which is facing serious problems with erosion. 

MEMBROS DA BANCA:
Externo à Instituição - ANDRE GISKARD AQUINO DA SILVA - CAU
Presidente - 2218779 - HELENICE VITAL
Externo à Instituição - WERNER FARKATT TABOSA - UFRN
Externo ao Programa - 2177287 - ZULEIDE MARIA CARVALHO LIMA