Morfodinâmica costeira da Praia de Ponta Negra em Natal-RN e a variabilidade interanual da precipitação
Beach environments are landscape units that interweave the ocean-climate dynamics at the planetary and regional level, as well as the energy potentials provided by the local processes of waves, tides, humidity, winds and precipitation. In this approach, it is verified that the occurrence of periods...
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| Formato: | bachelorThesis |
| 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/123456789/50876 |
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| Resumo: | Beach environments are landscape units that interweave the ocean-climate dynamics at the planetary and regional level, as well as the energy potentials provided by the local processes of waves, tides, humidity, winds and precipitation. In this approach, it is verified that the occurrence of periods of El Niño Southern Oscillation (ENSO) is associated with distinct rainfall regimes and modifications in the circulation pattern of the trade winds, thus being associated with changes in the energy balance and morphodynamics of coastal environments, consequently. The Ponta Negra beach, in Natal-RN, holds great attention as a tourist spot, given its promotion to a national and international tourism scenario. However, it also presents itself by the inherent fragility of its morphodynamics and structure and the association to meteorological events of precipitation, with emphasis on the advance of the sea and destruction of the promenade of the beach. Thus, the general objective of this study is to analyze the occurrence of episodes of coastal erosion on the beach of Ponta Negra (Natal-RN) and the possible relationship between the action of the ENOS phenomenon in the behavior of precipitation between the years 1986 and 2016. It is verified, through the application of quali-quantitative methodology of the Oceanic Niño and Rainfall Anomaly Indices, that the intensity of ENOS had no influence on the context of precipitation and the frequency of erosive events. Only the years 2000, 2008 and 2011 showed a positive relation between the occurrence of La Niña and precipitation regimes above the historical average, corresponding to 10% of the data sample. In articulation to the analysis of erosive events, only the years 2008 and 2011 presented the occurrence of the negative phase of the Sea Surface Temperature Anomaly (SSTA) (Weak La Niña period), precipitation above the historical average. |
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