Data/hora: 12/06/2024 14:08:16

Provedor de dados: | 91
País: | Brazil
Título: | Meteorological and hydrological variables on occurrence of riverbank erosion along lower São Francisco river
Autores: | Rocha,Igor P. da; Holanda,Francisco S. R.; Araújo Filho,Renisson N.; Casado,Ana P. B.; Bandeira,Arilmara A.
Data: | 2013-02-01
Ano: | 2013
Palavras-chave: | River discharge; Wind; Rainfall; Water resources.
Resumo: | The objectives of this paper were to analyze the seasonal distributions of climatic and hydrological variables along the Lower São Francisco River, Northeastern Brazil, between the States of Sergipe and Alagoas, and further, to verify their relationships with the erosion of the right margin in Sergipe State. The investigated area comprises the sedimentary portions of the Lower São Francisco River, located at the Cotinguiba-Pindoba Irrigated Perimeter. Historical records of variables such as rainfall, river streamflow velocity, river discharge, wind velocity and the predominant direction were collected from a climatological station as well as rain and streamflow gauges located in the municipality of Propriá. The rainfall that occurs in the region is considered non-erosive, 96.2% of the rain had intensity less than 25.0 mm h-1. The evolution of erosion is explained by the increase in the outflow in February that peaked at 9,894.50 m³ s-1 and led to increases in the flow velocity. The rainfall regime interacts with the wind that blows predominantly from the eastern direction during the dry season and from the southeastern direction during the rainy season with maximum velocities of 5.5 and 8.0 m s-1, respectively.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662013000200004
Editor: | Departamento de Engenharia Agrícola  - UFCG
Relação: | 10.1590/S1415-43662013000200004
Formato: | text/html
Fonte: | Revista Brasileira de Engenharia Agrícola e Ambiental  v.17 n.2 2013
Fonte: | info:eu-repo/semantics/openAccess