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Proceedings of the International Association of Hydrological Sciences An open-access publication for refereed proceedings in hydrology
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Volume 364
Proc. IAHS, 364, 422–428, 2014
https://doi.org/10.5194/piahs-364-422-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Proc. IAHS, 364, 422–428, 2014
https://doi.org/10.5194/piahs-364-422-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

  16 Sep 2014

16 Sep 2014

Hydrological studies in experimental and representative basins in Pernambuco State, Brazil

S. M. G. L. Montenegro1, B. B. da Silva1, A. C. D. Antonino1, J. R. S. Lima2, E. S. de Souza3, L. M. M. de Oliveira1, A. E. S. S. de Moura1, and R. M. S. Souza3 S. M. G. L. Montenegro et al.
  • 1Federal University of Pernambuco, UFPE, Civil Engineering Department, Av. Acadêmico Hélio Ramos, s/n. Cidade Universitária. Recife, PE, Brazil
  • 2Rural Federal University of Pernambuco, Academic Unit of Garanhuns, Avenida Bom Pastor, s/n, Boa Vista, CEP: 55292-270, Garanhuns/PE, Brazil
  • 3Rural Federal University of Pernambuco, Academic Unit of Serra Talhada, Fazenda Saco s/n CEP: 56900-000, Serra Talhada, PE, Brazil

Keywords: Beerkan, evapotranspiration, water balance, energy balance, CO2 flow

Abstract. Hydrological studies in experimental and representative basins are of fundamental importance for water resources management. This paper presents some activities of hydrological research in experimental and representative basins of the State of Pernambuco, Brazil. The study areas are located at Tapacurá and Mundaú representative basins and at the Gameleira experimental basin, and in experimental plots in Pajeú basin. In the Tapacurá basin, three studies were performed: (1) different monthly coefficients "k" of the Thornthwaite method were tested to calculate the effective temperature and, consequently, the reference evapotranspiration, giving rise to the method identified as Modified Thornthwaite; (2) the spatial variability of the retention curve and hydraulic conductivity parameters were analysed using the Beerkan method; (3) changes in vegetation cover were evaluated through the NDVI and NDWI indexes using TM–Landsat 5 images. In the Mundaú representative basin, the performance of different evapotranspiration methods was evaluated and compared to the FAO standard method, Penman-Monteith. In the Pajeú basin, the experimental plot is covered by pasture and sensors were installed to monitor the following variables: rainfall, air temperature, the energy balance components (net radiation, latent and sensible heat, and soil heat flux), wind velocity and CO2 flux into atmosphere, soil moisture and runoff.

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