Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/42311
Título: Mapeamento de chuvas intensas para o Estado do Tocantins
Título(s) alternativo(s): Heavy rainfall mapping for Tocantins State, Brazil
Palavras-chave: Chuva de projeto
Precipitação máxima diária anual
Modelos Gaussianos
Desagregação de chuvas
Geoestatística
Rainfall design
Annual maximum daily precipitation
Gaussian models
Rainfall breakdown
Geostatistics
Data do documento: Mar-2020
Editor: Sociedade Brasileira de Meteorologia
Citação: SILVA NETO, V. L. et al. Mapeamento de chuvas intensas para o Estado do Tocantins. Revista Brasileira de Meteorologia, São Paulo, v. 35, n. 1, p. 1-11, mar. 2020.
Resumo: This study aimed to map heavy rainfall with durations of 10, 30, 720 and 1440 minutes, associated with return times of 10, 50 and 100 years for the Tocantins State. Historical series of 95 pluviometric stations located in the Tocantins State and nearby were applied, with standard period from 1983 to 2013. A geostatistical study was conducted, evaluating the spherical, exponential and gaussian semivariogram models, adjusted by the weighted least squares method. From this study, the model that presented the smallest average error based on cross-validation was applied to the mapping process by ordinary kriging. There was good performance of the geostatistical techniques, being possible to highlight the spherical model for the mapping of the annual maximum daily precipitation and the Gaussian model for the rains calculated by the methodology of disaggregation. It was also verified that the areas of intense rainfall of greater severity in the state are in the Bico do Papagaio (north), Bananal Island (southwest) and northwest of the state.
URI: http://repositorio.ufla.br/jspui/handle/1/42311
Aparece nas coleções:DEG - Artigos publicados em periódicos
DRH - Artigos publicados em periódicos

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