Variability of stream flow discharge in response to self-similar random fields of temporal fluctuations in lateral inflow rate

Ching Min Chang, Hund-Der Yeh*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

This article presents the use of stochastic methodology for quantitative analysis of variability in stream flow discharge in response to fluctuations in lateral inflow rate, where the lateral inflow rate is considered to be the difference between rainfall and infiltration rates. In this work, we focus on the case where the temporal correlation structure of the fluctuations in the lateral inflow rate can be characterized by the statistics of random fractals. A closed-form expression quantifying the stream flow variability is therefore developed to investigate the influence of the fractal dimension of lateral inflow process and the size of time domain. It is found that the stream flow discharge variability increases with the time domain size, while the fractal dimension of lateral inflow process plays a role in the smoothness of fluctuations in stream flow discharge around the mean.

Original languageEnglish
Pages (from-to)246-249
Number of pages4
JournalJournal of Hydrology
Volume517
DOIs
StatePublished - 9 Sep 2014

Keywords

  • Fractal dimension
  • Lateral inflow rate
  • Variance of stream flow discharge

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