Determinação da vulnerabilidade física da zona costeira de parte dos municípios de Pedra Grande e São Miguel do Gostoso - RN sob influência de um parque eólico
The occupation of man and the use of natural resources in the territory modify the environment and need to be studied, carrying out multitemporal prognosis and analyzes to ensure the coexistence of nature and society. As a result of the increase in mean sea level, estimated until 2100 and the natura...
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| Formato: | Dissertação |
| Idioma: | pt_BR |
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Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/46537 |
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| Resumo: | The occupation of man and the use of natural resources in the territory modify the environment
and need to be studied, carrying out multitemporal prognosis and analyzes to ensure the
coexistence of nature and society. As a result of the increase in mean sea level, estimated until
2100 and the natural and anthropogenic changes observed in coastal areas, this study consists
to determining the physical vulnerability of the region of São Miguel do Gostoso and Pedra
Grande before and after a wind farm installation. The Average Natural (ANVI), Weighted
Natural (WNVI), Average Environmental (AEVI) and Weighted Environmental (WEVI)
Vulnerability Indexes were calculated through analyzes using thematic maps of the variables
geomorphology, geology, soils, vegetation and land use and occupation, with their
dimensionality and subjectivity determined by the execution of the Hierarchical Analytical
Process (HAP) and Principal Component Analysis (PCA). The Coastal Vulnerability Index
(CVI) was defined using two methodologies for the three scenarios of sea level rise established
by the IPCC: the first one owns six physical or hydrodynamic variables (geomorphology, slope,
coastline variation rate, significant wave height, tidal range and mean sea level rise), and the
second embracing, beyond these, three more variables of anthropic action (prognosis of
coastline variation, activity or current use of the coastline and coastal urban infrastructure). The
natural and environmental vulnerability indexes showed proportions of low, medium and high
vulnerability, adding up to more than 90% in all scenarios, with the WEVI being the most
optimistic and the ANVI the most pessimistic. The coastal vulnerability results presented
predominance of medium and high vulnerabilities along the entire coastline. The addition of the
anthropogenic variables reduced the influence of mean sea level rise in this index, showing
lower proportions in the highest degrees of vulnerability. |
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