Banca de DEFESA: YASMYM CONSTHANCE DE SOUZA E SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : YASMYM CONSTHANCE DE SOUZA E SILVA
DATE: 23/06/2025
TIME: 09:00
LOCAL: Videoconferência
TITLE:

Morphology and Morphometry of the Continental Slope Adjacent to Caiçara do Norte - São Miguel do Gostoso, Potiguar Basin, NE Brazil.

KEY WORDS:

Slope; Submarine Canyons; Potiguar Basin; Brazilian Equatorial Margin

PAGES: 135
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUMMARY:

This dissertation presents the first results of the bathymetric mapping of the Brazilian continental slope adjacent to Caiçara do Norte and São Miguel do Gostoso (RN). The investigated area, located in the Potiguar Basin, corresponds to a still poorly documented stretch of the Brazilian Equatorial Margin (BEM), especially concerning high-resolution morphological data. To enhance this knowledge, systematic mapping was carried out using multibeam bathymetry. The results revealed depths ranging from 100 meters to 2,700 meters, covering an approximately 25 km wide area. The area is characterized by the presence of 22 submarine canyons, which were classified into two groups based on an integrated analysis of morphometric parameters, including thalweg configuration, drainage patterns, slope, and aspect values. Besides the canyons, other seafloor features were identified along the slope, such as circular and sinuous depressions, gullies, grooves, and mounds. Features such as changes in canyon orientation and convex patterns of longitudinal profiles suggest tectonic activity in the mapped slope region, which likely influences its morphology. Therefore, this work contributes to filling a significant cartographic and morphological gap in the Equatorial Margin of Brazil.

COMMITTEE MEMBERS:
Externa à Instituição - MARIA ALINE LISNIOWSKI - SGB
Presidente - 2218779 - HELENICE VITAL
Externa ao Programa - 1226434 - MARY LUCIA DA SILVA NOGUEIRA - null