Banca de QUALIFICAÇÃO: PAULO VICTOR DO NASCIMENTO ARAÚJO

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : PAULO VICTOR DO NASCIMENTO ARAÚJO
DATA : 09/07/2018
HORA: 14:00
LOCAL: Auditório do DGeo
TÍTULO:

HIGH PRECISION GEOTECHNOLOGIES APPLIED TO FLOOD GEOHAZARD MODELING DURING CLIMATE CHANGE

PALAVRAS-CHAVES:

Natural disaster; river flood; coastal flood; geoprocessing; DEM

PÁGINAS: 15
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Geociências
RESUMO:

Flood is the most common type of natural disaster in the world and can have devastating consequences that affect the economy, the environment and the lives of thousands of people. In addition, climate change and sea level rise have accelerated and potentiated flood events, especially in coastal and riverine regions. These factors leave the coast exposed to greater risks, including erosion. In this sense, this doctoral qualification aims to develop and apply methodology based on geotechnology of high vertical precision in the modeling of geoperigo to floods in the face of climate change. This work has been developed in two study areas: (1) A cut in the Piranhas-Açú estuary (study area 1), Rio Grande do Norte; and (2) a cut of the stretch of the Uruguay River (study area 2), region of Itaqui, Rio Grande do Sul. The choice of the two areas was due to the fact that the regions have different flood types (coastal flood x river flood) . A priori was developed a methodology of evaluation and calibration of Digital Elevation Model (MDE) of high vertical accuracy for use in flood modeling. The methodology had as a premise the use of a mesh of ground control points (GCPs) of high vertical accuracy, linked to the Brazilian Geodetic System (Sistema Geodésico Brasileiro - SGB) and analyzed in a robust statistical evaluation and calibration of the MDEs, developed and applied to the study area 1. Next, the methodology was used in a case study in a fluvial flood type region (study area 2), and the geoproduction mapping was used to flood the sector in question. Finally, the methodology has been applied in region 1 (region under the influence of coastal flood). In this last step, the current IPCC and IBGE indicators on climate change and sea level rise are taken as references. The present results demonstrate high efficacy for the MDE evaluation and calibration methodology, obtaining evolutions in the error reduction up to approximately 70%, as in the case of region 2. In addition, the geohazard flood of the entire region 2 was completely mapped , being validated with aerial photos and field record. Assessing potentially floodable areas can help reduce the negative impact of flood events by supporting the land use planning process in areas exposed to flood hazard.

MEMBROS DA BANCA:
Externo ao Programa - 1284362 - CARLOS HENRIQUE GRILO DINIZ
Externo à Instituição - JOSEMIR ARAÚJO NEVES - EMPARN
Presidente - 350698 - VENERANDO EUSTAQUIO AMARO