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| Back,Álvaro José; Oliveira,José Luiz Rocha; Henn,Alan. |
| The purpose of this study was to adjust equations that establish relationships between rainfall events with different duration and data from weather stations in the state of Santa Catarina, Brazil. In this study, the relationships between different duration heavy rainfalls from 13 weather stations of Santa Catarina were analyzed. From series of maximum annual rainfalls, and using the Gumbel-Chow distribution, the maximum rainfall for durations between 5 min and 24 h were estimated considering return periods from 2 to 100 years. The data fit to the Gumbel-Chow model was verified by the Kolmogorov-Smirnov test at 5 % significance. The coefficients of Bell's equation were adjusted to estimate the relationship between rainfall duration t (min) and the return... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Design rainfall; Hydrology; Drainage. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000300031 |
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| Back,Álvaro José; Henn,Alan; Oliveira,José Luiz Rocha. |
| Knowledge of intensity-duration-frequency (IDF) relationships of rainfall events is extremely important to determine the dimensions of surface drainage structures and soil erosion control. The purpose of this study was to obtain IDF equations of 13 rain gauge stations in the state of Santa Catarina in Brazil: Chapecó, Urussanga, Campos Novos, Florianópolis, Lages, Caçador, Itajaí, Itá, Ponte Serrada, Porto União, Videira, Laguna and São Joaquim. The daily rainfall data charts of each station were digitized and then the annual maximum rainfall series were determined for durations ranging from 5 to 1440 min. Based on these, with the Gumbel-Chow distribution, the maximum rainfall was estimated for durations ranging from 5 min to 24 h, considering return... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heavy rainfall; Hydrology; Drainage. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000600027 |
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| Back,Álvaro J.; Oliveira,José L. R.; Henn,Alan. |
| Com este trabalho objetivou-se determinar as relações entre precipitações de diferentes durações para o Estado de Santa Catarina. Foram estabelecidas as séries de máximas anuais de chuva com duração de 5 a 1440 min de treze estações pluviográficas de Santa Catarina. Para cada duração foram estimadas as precipitações máximas com período de retorno de 2 a 100 anos, com base na distribuição de Gumbel-Chow. A relação média entre a chuva de 24 h e a chuva de um dia independe do período de retorno, com média para o estado de 1,17. Ao se analisar o horário da leitura da precipitação diária verificou-se que esta relação varia de 1,12 a 1,20. Em referência à chuva de 1 h em relação à chuva de 24 h observam-se valores significativamente inferiores aos normalmente... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chuva intensa; Hidrologia; Drenagem. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662012000400009 |
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