Banca de DEFESA: SARAH ALVES DOS SANTOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : SARAH ALVES DOS SANTOS
DATE: 30/01/2023
TIME: 09:00
LOCAL: videoconferência https://www.youtube.com/@ppggufrn
TITLE:

GEOMORPHOLOGICAL CHARACTERIZATION OF THE BRAZILIAN CONTINENTAL PLATFORM ADJACENT TO THE PARNAÍBA RIVER DELTA (PI - MA)

KEY WORDS:

NORTHEAST CONTINENTAL SHELF; SEABED MAPPING; SINGLE BEAM BATHYMETRY

PAGES: 86
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUMMARY:

The mapping of the features present on the continental shelves contributes to the proper interpretation of the oceanic environment, which can be used for scientific, political and strategic purposes, to support management, for the development and preservation of submerged areas in general and for the future of our planet. This study was carried out on the Brazilian Equatorial Margin, on the shelf in front of the Parnaíba River Delta (PI-MA) and had as its main objective the mapping of geomorphological features in this region through the use of hydroacoustic data (single beam bathymetry), supported by sedimentological data, obtained within the framework of the Brazilian Navy's National Oceanographic Data Bank - BNDO. In the laboratory, the hydroacoustic data were interpolated using the kriging and minimum curvature methods, where the kriging method proved to be more efficient in viewing the features present in the area. The integration, analysis and interpretation of the data resulted in a variety of ocean substrate maps (e.g. bathymetric, slope, aspect, sedimentological) that can be used as biologically relevant units (e.g., inclination, orientation, curvature and terrain, among others). In this way, it was possible to identify a sedimentary cover ranging from fine sand to coarse sand, sand with biodetritus, shells and gravel, the presence of mud and quartz sand, whose relief is associated with different submerged features, such as banks, dunes, submarine valleys, as well as the presence of plateaus, associated with rocky outcrops and reef banks. Additionally, lineaments and paleovalleys on the current shelf indicate the path that the Parnaíba River took in the past.

COMMITTEE MEMBERS:
Externo à Instituição - ALBERTO GARCIA DE FIGUEIREDO JR - UFF
Presidente - 2218779 - HELENICE VITAL
Externa à Instituição - MARY LUCIA DA SILVA NOGUEIRA - UFOP