Identification of trends in Malaysian monthly runoff under the scaling hypothesis

  • Ramachandra Rao A
  • Azli M
  • Pae L
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Abstract

Abstract Statistical tests have been widely used for several decades to identify and test the significance of trends in runoff and other hydrological data. The Mann-Kendall (M-K) trend test is commonly used in trend analysis. The M-K test was originally proposed for random data. Several variations of the M-K test, as well as pre-processing of data for use with it, have been developed and used. The M-K test under the scaling hypothesis has been developed recently. The basic objective of the research presented in this paper is to investigate the trends in Malaysian monthly runoff data. Identification of trends in runoff data is useful for planning water resources projects. Existence of statistically significant trends would also lead to identification of possible effects of climate change. Monthly runoff data for Malaysian rivers from the past three decades are analysed, in both five-year segments and entire data sequences. The five-year segments are analysed to investigate the variability in trends from on...

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Ramachandra Rao, A., Azli, M., & Pae, L. J. (2011). Identification of trends in Malaysian monthly runoff under the scaling hypothesis. Hydrological Sciences Journal, 56(6), 917–929. https://doi.org/10.1080/02626667.2011.588172

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