Banca de DEFESA: Gudo-Bai Armando Maidjelele

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : Gudo-Bai Armando Maidjelele
DATE: 24/02/2023
TIME: 11:00
LOCAL: videoconferência
TITLE:

FACTORS OF THE INCIDENCE OF URBAN FLOOD RISK IN BEIRA CITY, MOZAMBIQUE

KEY WORDS:

Perception of flood risk. Climate change. Urban expansion. Beira, Mozambique.

PAGES: 183
BIG AREA: Outra
AREA: Ciências Ambientais
SUMMARY:

The severity and frequency of urban flooding has increased in recent years in Mozambican cities. Alteration of the urban microclimate due to the impacts of global climate change and uncontrolled urban sprawl may also exacerbate the situation in the future. Under this premise, this research aimed to analyze the factors of the incidence of flood risks and their socio-environmental consequences in Beira, Mozambique, in the period from 1979 to 2020, as well as to understand if people's perceptions related to floods are consistent with the factors flood risk contributors. The identified factors are used to provide an overview of each driver's impact on flood risk and municipal management capacity. First, the decadal expansion of urban areas and its effects on flood risk were quantified, applying multitemporal satellite images Landsat Multispectral Scanner System [MSS], Multispectral Scanner System [TM] and Operational Land Imager [OLI], acquired in the years 1989, 1999, 2008 and 2019. Then, the variability and trends of annual precipitation and temperature in Beira were analyzed to estimate the possible impact of climate change. Next. areas susceptible to flooding were mapped, with the selection of seven conditioning factors and historic flooding points in all neighborhoods of the city of Beira. Thus, the statistical method of logistic regression (LR) and the analytical hierarchy process (AHP) were used to assess flood susceptibility. In order to understand local perceptions of flood risks, a structured questionnaire was applied through face-to-face research and Google Forms. A simple random sampling technique was used to collect data from 230 respondents in 16 neighborhoods of different population sizes. Finally, the role of Mozambican institutions in flood risk management was presented, as well as the proposal for managing urban flood risks in the city of Beira. The results indicate that (i) the nature of urban flooding is dictated by the degree of interaction between socioeconomic, institutional, environmental and infrastructure factors and (ii) the neglect, ambiguity and inconsistency that characterize the institutional political landscape play a vital role in co-evolution of urban flood hotspots. Overall, this research contributes to an in-depth understanding of the role of multiple context-specific urban conditions in flooding, a key prerequisite for designing robust approaches to flood management.

BANKING MEMBERS:
Externo à Instituição - EDSON VICENTE DA SILVA - UFC
Externo à Instituição - JORGE MANUEL DO ROSÁRIO TRINDADE - UAL
Externo ao Programa - 2866456 - GLADSTON LUIZ DA SILVA
Presidente - 1226885 - LAURA ANGELICA FERREIRA DARNET
Interna - 2333890 - STEPHANIE CAROLINE NASUTI