Transfer function-noise modeling and spatial interpolation to evaluate the risk of extreme (shallow) water-table levels in the Brazilian Cerrados

R.L. Manzione, M. Knotters, G.B.M. Heuvelink, J.R. von Asmuth, G. Camara

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Scopus)

Abstract

Water regimes in the Brazilian Cerrados are sensitive to climatological disturbances and human intervention. The risk that critical water-table levels are exceeded over long periods of time can be estimated by applying stochastic methods in modeling the dynamic relationship between water levels and driving forces such as precipitation and evapotranspiration. In this study, a transfer function-noise model, the so called PIRFICT-model, is applied to estimate the dynamic relationship between water-table depth and precipitation surplus/deficit in a watershed with a groundwater monitoring scheme in the Brazilian Cerrados. Critical limits were defined for a period in the Cerrados agricultural calendar, the end of the rainy season, when extremely shallow levels (
Original languageEnglish
Pages (from-to)1927-1937
JournalHydrogeology Journal
Volume18
Issue number8
DOIs
Publication statusPublished - 2010

Keywords

  • time-series
  • depths
  • prediction
  • savanna
  • system

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