Suspended sediment concentration and its variation with water discharge in a dryland ephemeral channel, northern Negev, Israel

Yulia Alexandrov, Jonathan B. Laronne, Ian Reid

Research output: Contribution to journalArticlepeer-review

87 Scopus citations

Abstract

Relations between suspended sediment concentration and water discharge during flash floods in an ephemeral stream of the northern Negev are analysed. Water samples were obtained with a pre-programmed sampler. The mean suspended sediment concentration measured during 6 years of monitoring was 34,000mgl-1, with individual flood maxima in the range 21,000-229,000mgl-1. Regression of suspended sediment concentration on water discharge takes the form SSC = 104.41Q0.42. However, only 50% of the variance in suspended sediment concentration is explained by variations in discharge. This indicates that changes in sediment supply and variations in the importance of source areas are also significant in this semi-arid water catchment.

Original languageEnglish
Pages (from-to)73-84
Number of pages12
JournalJournal of Arid Environments
Volume53
Issue number1
DOIs
StatePublished - 1 Jan 2003

Keywords

  • Ephemeral channel
  • Flash floods
  • Hysteresis
  • Suspended sediment

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