Data/hora: 01/06/2024 14:36:34

Provedor de dados: 	70	
País: 	Brazil	
Título: 	Analysis of the relationship intensity, duration, frequency of disaggregated daily rainfall in southern Rio Grande do Sul, Brazil	
Autores: 	Damé,Rita de C. F.; Teixeira-Gandra,Claudia F. A.; Villela,Francisco A.; Santos,Jacira P. dos; Winkler,Antoniony S.	
Data: 	2014-08-01	
Ano: 	2014	
Palavras-chave: 	Hydrology; Daily rainfall disaggregation; Heavy rain.	
Resumo: 	The intensity, duration, and frequency relationship (IDF) of rainfall occurrence may be done through continuous records of pluviographs or daily pluviometer values . The objective of this study was to estimate the intensity-duration-frequency relationships of precipitation, using the method of daily rainfall disaggregation, at weather stations located to the southern half of the state of Rio Grande do Sul; comparing them with those obtained by rain gauge records, in places considered homogeneous from the meteorological point of view. The IDF equation parameters were estimated from daily rainfall disaggregation data, using the method of nonlinear optimization. To validate the equations confidence indices and efficiency and the "t" Student test, among maximum intensity values obtained from the disaggregated daily rainfall durations of 10; 30; 60 min and 6; 12 and 24 h and those extracted from existing IDF equations. For all studied stations and return periods, the trust index values were regarded as "optimal", i.e., greater than 0.85. The maximal intensity of rainfall obtained by daily rainfall disaggregation have similarity with those obtained by relations IDF standards. Thus, the method constitutes a feasible alternative in obtaining the IDF relationships.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000400006	
Editor: 	Associação Brasileira de Engenharia Agrícola	
Relação: 	10.1590/S0100-69162014000400006	
Formato: 	text/html	
Fonte: 	Engenharia Agrícola  v.34 n.4 2014	
Fonte: 	info:eu-repo/semantics/openAccess