Banca de QUALIFICAÇÃO: THIAGO CAVALCANTE LINS SILVA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : THIAGO CAVALCANTE LINS SILVA
DATE: 19/12/2023
TIME: 09:00
LOCAL: Videoconferência
TITLE:

IMPACTS AND RISKS RELATED TO CLIMATE CHANGE ON THE ENVIRONMENTAL, ECONOMIC AND SOCIAL SUBSYSTEMS AT THE MOUTHS OF THE PIRANHAS-AÇU AND APODI-MOSSORÓ RIVERS, STATE OF RIO GRANDE DO NORTE

KEY WORDS:
PAGES: 218
BIG AREA: Ciências Humanas
AREA: Geografia
SUMMARY:

Climate change is one of the most pressing challenges of the 21st century, having profound impacts on various spheres of our planet, from the organizations and structure of environmental systems to human societies and activities, putting pressure on various sectors to change production patterns in order to resolve the possible damage and obvious risks to the integrity and survival of various species on the planet. Conflicts of use and non-conformities between activities and the physical substrate generate a series of environmental concerns, which have been increasingly highlighted by the projections of rising sea levels signaled by the IPCC's AR6 report. The northern coast of the state of Rio Grande do Norte, located in northeastern Brazil, is emerging as a relevant case study for understanding the implications of climate change and the possible impacts of rising sea levels on river mouths. As such, this study set out to analyze the possible effects of rising mean sea levels on the river mouths of the Piranhas-Açu and Apodi-Mossoró rivers, on the northern coast of Rio Grande do Norte, two very peculiar areas from a socio-economic point of view, inserted in a semi-arid context in a low-lying coastal scenario with recurrent flooding events, being able to draw up critical future prognoses, using an integrative approach, understanding the various aspects of the possible impacts. With this in mind, this study sought to analyze the region's dynamic vectors on several fronts, including geomorphological control forces, coastal procedural variations, the refinement of digital terrain products, the mapping of urban infrastructures and the modeling of mean sea level rise scenarios, in order to understand the dynamics surrounding the study area, seeking a better perspective on its processes. To this end, open techniques, data, and information were used to achieve the objectives, with the goal in mind, which is modeling with a predilection for impacts on the social, environmental and economic sectors. The partial results indicated that marine forcing was controlled by waves from east to north, with a strong influence from the marine trough, which repositions and "breaks" part of the waves, influencing the patterns and directions of the waves that reach the surface, concentrating their potential in some specific portions; the same process occurs with currents and sediment transport, which are considerably influenced. Another important result was the calibration of the MDEs, where the adjustment to the plane of the various models was carried out with improvements of up to 78%, as well as a considerable reduction in the RMSE values in all the models, with the main success being the reduction to levels of less than 60 cm achieved in the FABDEM product. The data will be refined and undergo further re-qualification, which will lead to interesting adjustments.

COMMITTEE MEMBERS:
Presidente - 2506087 - MARCO TULIO MENDONCA DINIZ
Interna - 2177287 - ZULEIDE MARIA CARVALHO LIMA
Externo à Instituição - BRUNO FERREIRA
Externo à Instituição - PAULO VICTOR DO NASCIMENTO ARAÚJO - IFRN