Banca de QUALIFICAÇÃO: LAURA BEATRIZ DE SOUZA FERNANDES

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : LAURA BEATRIZ DE SOUZA FERNANDES
DATE: 15/12/2025
TIME: 08:00
LOCAL: Sala 1 - PPGG
TITLE:

Geomorphology and Morphometry of the Continental Slope Adjacent to Baía Formosa/RN, Northeast Brazil

KEY WORDS:

multibeam bathymetry; continental margin; submarine canyons; continental shelf

PAGES: 56
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUMMARY:

The continental slope adjacent to the municipality of Baía Formosa (RN) comprises the Brazilian Continental Margin, a passive margin resulting from the opening of the South Atlantic and the continuous interaction between hydrodynamic, sedimentary, and structural processes. Despite recent advances in mapping the Brazilian continental shelf, data on the slope and the features that mark the transition between shallow and deep domains are still scarce. Therefore, this work aims to map and describe the morphology and morphometry of this sector of the continental margin and its main erosional-depositional features, such as submarine canyons, seeking to understand the processes responsible for their formation and evolution. High-resolution bathymetric data were acquired aboard the Hydro-oceanographic Research Vessel Vital de Oliveira, using the EM122 multibeam echo sounder (Kongsberg). The processing was performed using CARIS HIPS & SIPS 12.0 software, resulting in Digital Terrain Models (DTMs), which were subsequently analyzed in QGIS and ArcGIS Pro to create bathymetry, slope, aspect maps, and derived products aimed at geomorphological interpretation. The results reveal a slope carved by submarine canyons, whose significant variation in slope, dimensions, gradients, and geometries was quantified through morphometric analysis. This data broadens the understanding of the submerged morphology of the eastern margin of Rio Grande do Norte and reinforces the relevance of investigating complex submarine environments

COMMITTEE MEMBERS:
Presidente - 2218779 - HELENICE VITAL
Externa à Instituição - MARIA ALINE LISNIOWSKI - SGB
Interno - ***.901.818-** - YOE ALAIN REYES PEREZ - UFRN