Trends in peak streamflow data in Australia : impacts of serial and cross-correlation

E. H. Ishak, A. Rahman, S. Westra, A. Sharma, G. Kuczera

    Research output: Chapter in Book / Conference PaperConference Paperpeer-review

    2 Citations (Scopus)

    Abstract

    ![CDATA[Investigation of trends in hydrological time series data generally rely on the assumption that observed records are generally independent or having short-term perseverance. It is known that the presence of serial correlation in a time series can manipulate the ability of the detection test to evaluate the site significance of a trend; while the existence of cross-correlation among sites in a network can affect the ability of the test to assess the field significance of trends over the station network. At the significance level of 0.1, the site significance of trends in Australian annual maximum flood series data with 30-, 40- and 50-year records was assessed by the non-parametric Mann- Kendall test, with the trend free pre-whitening approach to remove and eliminate the effects of serial correlation from the time series. The field significance of trends over the whole country was evaluated by using a bootstrap re-sampling approach that considers preservation of the cross-correlation structure of the network. It is concluded that a greater number of downward trends are observed than are expected to occur by chance for all the three time periods.]]
    Original languageEnglish
    Title of host publicationBalance and Uncertainty: Water in a Changing World: Proceedings of the 34th World Congress of the International Association for Hydro-Environment Research and Engineering: 33rd Hydrology and Water Resources Symposium and 10th Conference on Hydraulics in Water Engineering: 26 June to 1 July 2011, Brisbane Convention & Exhibition Centre, Brisbane, Australia
    PublisherEngineers Australia
    Pages766-773
    Number of pages8
    ISBN (Print)9780858258686
    Publication statusPublished - 2011
    EventInternational Association for Hydro-Environment Research and Engineering. World Congress -
    Duration: 26 Jun 2011 → …

    Conference

    ConferenceInternational Association for Hydro-Environment Research and Engineering. World Congress
    Period26/06/11 → …

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