Banca de DEFESA: LUAN KAWE PANTOJA SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : LUAN KAWE PANTOJA SILVA
DATE: 31/07/2024
TIME: 14:00
LOCAL: Videoconferência / CCET
TITLE:

Geomorphology of the Continental Slope Adjacent to Touros High, NE Brazil

KEY WORDS:

Brazilian Equatorial Margin, Multibeam Bathymetry, Morphology, Submarine Canyons.

PAGES: 78
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUBÁREA: Geologia
SUMMARY:

Located on the Brazilian Equatorial Margin (BEM), the study area is part of the newest Brazilian exploratory frontier in deep and ultra-deep waters. However, the BEM lacks studies and the area selected at the eastern end of the Potiguar Basin is one of the least known. In this sense, the main aim of this study was to map, with multibeam bathymetry, the Brazilian Continental Slope, adjacent to Touros High (RN) between the 100 and 2,000 m deep isobaths. From the analysis and interpretation of the data, considerations were made about the seabed. Throughout the study area, 10 submarine canyons were identified for the first time, which were divided into two groups: A and B, based on morphological characteristics. The canyons in group A have an average length of 14.5 km and a width of 2.5 km, while the canyons in group B are larger, with an average length of 21 km and a width of 3. 5km. The slope of the Continental Slope, presented in the bathymetric profiles, varied from 0o to 50o. On the canyon walls, ravine features and feeder gullies, circular features and grooves on the middle slope, terraces, gorges and landslide scars on the outer slope and ocean basin were found. These morphological features on the studied slope, in comparison with other slope regions in Brazil and the world, provide potential indications about sea level variations. The results contribute to knowledge of the evolution of the equatorial margin and slope, as well as subsidies for the installation of offshore projects in the Brazilian northeast in a sustainable way.

COMMITTEE MEMBERS:
Presidente - 2218779 - HELENICE VITAL
Externa à Instituição - NARELLE MAIA DE ALMEIDA - UFC
Externa à Instituição - VALDENIRA FERREIRA DOS SANTOS - IEPA