Identification of oscillations in historical global streamflow data using empirical mode decomposition
Identifieur interne : 00A598 ( Main/Exploration ); précédent : 00A597; suivant : 00A599Identification of oscillations in historical global streamflow data using empirical mode decomposition
Auteurs : Francis H. S. Chiew [Australie] ; Murray C. Peel [Australie] ; Gnanathikkam E. Amirthanathan [Australie] ; Geoffrey G. S. Pegram [Afrique du Sud]Source :
- IAHS-AISH publication [ 0144-7815 ] ; 2005.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Historique, Statistique.
English descriptors
- KwdEn :
Abstract
The hydroclimatic variability that occurs over various time scales has implications for the management of land and water resources systems. This paper describes the use of the empirical mode decomposition (EMD) method to identify oscillations/variability in annual streamflow time series. The EMD method is also applied to bootstrap replicates of the original time series to test the statistical significance of the identified oscillations. The EMD is a relatively new technique and has several advantages over spectral time series analysis techniques. It is also relatively easy to use as the intrinsic oscillations are automatically and adaptively selected from the time series. The EMD analysis is applied to annual streamflow time series from 20 catchments across the world. The results indicate that statistically significant oscillations of 11-14 and 20-25 years are observed in some, but not all, of the time series.
Affiliations:
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S." last="Chiew">Francis H. S. Chiew</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Civil and Environmental Engineering, University of Melbourne</s1><s2>Victoria 3010</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Melbourne</settlement><region type="état">Victoria (État)</region></placeName><orgName type="university">Université de Melbourne</orgName></affiliation></author><author><name sortKey="Peel, Murray C" sort="Peel, Murray C" uniqKey="Peel M" first="Murray C." last="Peel">Murray C. 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Amirthanathan</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Civil and Environmental Engineering, University of Melbourne</s1><s2>Victoria 3010</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><placeName><settlement type="city">Melbourne</settlement><region type="état">Victoria (État)</region></placeName><orgName type="university">Université de Melbourne</orgName></affiliation></author><author><name sortKey="Pegram, Geoffrey G S" sort="Pegram, Geoffrey G S" uniqKey="Pegram G" first="Geoffrey G. S." last="Pegram">Geoffrey G. S. 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This paper describes the use of the empirical mode decomposition (EMD) method to identify oscillations/variability in annual streamflow time series. The EMD method is also applied to bootstrap replicates of the original time series to test the statistical significance of the identified oscillations. The EMD is a relatively new technique and has several advantages over spectral time series analysis techniques. It is also relatively easy to use as the intrinsic oscillations are automatically and adaptively selected from the time series. The EMD analysis is applied to annual streamflow time series from 20 catchments across the world. The results indicate that statistically significant oscillations of 11-14 and 20-25 years are observed in some, but not all, of the time series.</div></front></TEI><affiliations><list><country><li>Afrique du Sud</li><li>Australie</li></country><region><li>Victoria (État)</li></region><settlement><li>Melbourne</li></settlement><orgName><li>Université de Melbourne</li></orgName></list><tree><country name="Australie"><region name="Victoria (État)"><name sortKey="Chiew, Francis H S" sort="Chiew, Francis H S" uniqKey="Chiew F" first="Francis H. S." last="Chiew">Francis H. S. Chiew</name></region><name sortKey="Amirthanathan, Gnanathikkam E" sort="Amirthanathan, Gnanathikkam E" uniqKey="Amirthanathan G" first="Gnanathikkam E." last="Amirthanathan">Gnanathikkam E. Amirthanathan</name><name sortKey="Peel, Murray C" sort="Peel, Murray C" uniqKey="Peel M" first="Murray C." last="Peel">Murray C. Peel</name></country><country name="Afrique du Sud"><noRegion><name sortKey="Pegram, Geoffrey G S" sort="Pegram, Geoffrey G S" uniqKey="Pegram G" first="Geoffrey G. S." last="Pegram">Geoffrey G. S. Pegram</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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