Characterizing temporary hydrological regimes at a European scale

M.J. Kirkby, F. Gallart, T.R. Kjeldsen, B.J. Irvine, J. Froebrich, A. Lo Porto

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Monthly duration curves have been constructed from climate data across Europe to help address the relative frequency of ecologically critical low flow stages in temporary rivers, when flow persists only in disconnected pools in the river bed. The hydrological model is 5 based on a partitioning of precipitation to estimate water available for evapotranspiration and plant growth and for residual runoff. The duration curve for monthly flows has then been analysed to give an estimate of bankfull flow based on recurrence interval. The corresponding frequency for pools is then based on the ratio of bank full discharge to pool flow, arguing from observed ratios of cross-sectional areas at flood 10 and low flows to estimate pool flow as 0.1% of bankfull flow, and so estimate the frequency of the pool conditions that constrain survival of river-dwelling arthropods and fish. The methodology has been applied across Europe at 15 km resolution, and can equally be applied under future climatic scenarios.
Original languageEnglish
Pages (from-to)4355-4379
JournalHydrology and Earth System Sciences Discussions
Volume8
Issue number2
DOIs
Publication statusPublished - 2011

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