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| Damé,Rita de C. F; Teixeira-Gandra,Claudia F. A.; Guedes,Hugo A. S.; Silva,Gisele M. da; Silveira,Suélen C. R. da. |
| ABSTRACT This study aimed to investigate information gain by using rainfall intensity-duration-frequency (IDF) relationships, with data gathered within N+M years from seven rain gauge stations located in the Lagoa Mirim Watershed (South Atlantic basin). After N years of daily rainfall, the transition probabilities of a time homogeneous two-state Markov chain were defined to simulate rainfall occurrence, as well as gamma distribution to measure it; for that, daily rainfall series were composed of N+M years, with M being the generated series. The series were adjusted to Gumbel distribution, being used in annual maximum daily rainfall disaggregation for durations of 10, 20, 30, 40, 50, 60, 120, 360, 720 and 1440 min. Daily rainfall disaggregation was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Intense rainfall; Hydrologic modeling; Pluviographic records; Hydrological series. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000300492 |
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| Dorneles,Viviane R.; Damé,Rita de C. F.; Teixeira-Gandra,Claudia F. A.; Méllo,Letícia B.; Ramirez,Mario A. A.; Manke,Emanuele B.. |
| ABSTRACT Rainfall intensity-duration-frequency (IDF) relationships are a tool that can be used in modeling the transformation of rainfall to runoff, required for the design of hydraulic works. The objective of this study was to verify if there is a significant difference between the intensity-duration-frequency relationships generated using pluviographic records and those determined from pluviometric data. Maximum annual rainfall intensity values were obtained from the disaggregation of maximum daily rainfall and rainfall records in the durations of 5, 10, 15, 20, 30, 60, 120, 360, 720 and 1440 min and for the return periods of 2, 5, 10, 20, 25, 50 and 100 years, in the locality of Pelotas, Rio Grande do Sul state, Brazil (31° 46’ 34’’ S; 52° 21’ 34’’ W,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Intense rains; Pluviometric data; Pluviographic records. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000700506 |
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