Banca de DEFESA: THIAGO AUGUSTO BEZERRA FERREIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : THIAGO AUGUSTO BEZERRA FERREIRA
DATA : 07/08/2019
HORA: 08:30
LOCAL: PPGG
TÍTULO:

Evaluation of decadal shoreline changes along the Parnaíba Delta (NE Brazil) using Satellite images and statistical methods

PALAVRAS-CHAVES:

Parnaíba River Delta; Digital Shoreline Analysis; Erosion; undeveloped delta

PÁGINAS: 108
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Geociências
RESUMO:

The coastal zone are transitional environments, where continuous changes at different temporal and spatial scales occur, which are related to several processes such as oceanographic, fluvial, climatic and anthropogenic. Continuous monitoring of this environment provides essential information for understand the spatial distribution of erosive/depositional patterns, hence, its development. The main objective of this research was to investigate the Parnaiba River Delta’s shoreline behavior, at short and intermediate time scale, between 1984 and 2017, through 12 Landsat satellite imagens and statistical software (Digital Shoreline Analisys System). At intermediate scale, the results showed that 21% of PRD’s beaches are under intense shoreline retreat, 30% moderate shoreline retreat, 4% are stable, 29% moderate shoreline progradation and 15% under intense shoreline progradation. At short intervals, shoreline variations are directly related to the climatic hydro influence in the drainage basin, specifically with the El Niño and La Niña effects. On both time scales, major erosion trend occurred away from Parnaiba River mouth and predominantly on the west side of the delta, while deposition, or stability, prevailed on the east side. Due to lower anthropogenic impacts, both on coastal zone and the drainage basin area, the natural factors, mainly river discharge and rainfall trends, are likely to be main driving forces of shoreline changes  between 1984 and 2017.

MEMBROS DA BANCA:
Presidente - 2218779 - HELENICE VITAL
Interno - 2042405 - MOAB PRAXEDES GOMES
Externo à Instituição - JOSÉ MARIA LANDIM DOMINGUEZ - UFBA