Banca de DEFESA: GABRIEL DALLA ROSA CARVALHO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : GABRIEL DALLA ROSA CARVALHO
DATE: 05/12/2025
TIME: 09:00
LOCAL: MISTA (PRESENCIAL/ONLINE)
TITLE:

ASSESSMENT OF COASTAL EROSION AND THE PROTECTIVE FUNCTION OF NATURAL ECOSYSTEMS ON BEACHES IN THE NORTHERN COAST OF RIO GRANDE DO NORTE, USING GEOTECHNOLOGIES AND HYDROSEDIMENTARY MODELING

KEY WORDS:

Meteo-oceanographic modeling. Shoreline forecasting. Coastal management. Coastal land use and land cover.

PAGES: 110
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

Coastal erosion represents one of the most critical manifestations of morphodynamic instability, exacerbated by increasing anthropogenic pressure and climate change in the Equatorial South Atlantic. On the northern coast of Rio Grande do Norte (RN), Northeast Brazil, inadequate urban and tourist expansion has intensified these processes. This study aimed to characterize and quantitatively measure the erosive impact on the beaches of São Miguel do Gostoso and Touros, intending to support engineering projects and adaptive regional coastal management. The methodological approach integrated the characterization of meteo-oceanographic forcings, the multi-temporal and geostatistical analysis of erosion, and the assessment of coastal vulnerability through the incorporation of the natural protective function of ecosystems. The research employed remote sensing data (LANDSAT/SENTINEL-2) processed in the Digital Shoreline Analysis System (DSAS) for the historical analysis of shoreline change (1986–2023) and the application of the Coastal Vulnerability Index via the Integrated Valuation of Environmental Services and Tradeoffs (InVEST) model. Additionally, the Coastal Modeling System (SMC-Brasil) was utilized for hydrodynamic and hydro-sedimentary modeling. The results indicate a significant increase in the average shoreline mobility in the recent period (2014–2023), with an intensification of the rate of change. In areas with higher anthropization, the average erosion rate reached -14.55 m/year. The modeling confirmed an increase in the average wave energy flux since the 1980s, as well as changes in the wave climate propagation vector. In critical points, such as Monte Alegre beach, a longitudinal sediment transport of approximately -240,698.25 m³/year was calculated. It was found that dunes and sandy beach strips provide effective buffering performance and morphodynamic resilience, reducing erosion risks. The prognostic assessment points to a scenario of severe risk for coastal developments, reinforcing that the conservation of these habitats is essential for the balance and resilience of the coastal zone, demanding the use of integrated strategies and effective management measures.

COMMITTEE MEMBERS:
Presidente - 350698 - VENERANDO EUSTAQUIO AMARO
Interno - ***.898.694-** - PAULO VICTOR DO NASCIMENTO ARAÚJO - UFRN
Externa à Instituição - FABIANE NAGABE - UFPB
Externa à Instituição - MARIA DE FATIMA ALVES DE MATOS - ISI-ER