Teleconnections of inter-annual streamflow fluctuation in Slovakia with Arctic Oscillation,North Atlantic Oscillation,Southern Oscillation,and Quasi-Biennial Oscillation phenomena |
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Authors: | Pavla Pekarova Jan Pekar |
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Affiliation: | Institute of Hydrology, Slovak Academy of Sciences, Racianska 75, 831 02 Bratislava 3, Slovak Republic,Department of Applied Mathematics and Statistics, Faculty of Mathematics, Physics and Informatics,Comenius University Bratislava, Mlynska dolina, 842 48 Bratislava, Slovak Republic |
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Abstract: | The aim of the paper is to analyze a possible teleconnection of Quasi-Biennial Oscillation (QBO), Southern Oscillation (SO), North Atlantic Oscillation (NAO), and Arctic Oscillation (AO) phenomena with longterm streamflow fluctuation of the Bela River (1895-2004) and Cierny Hron River (1931-2004) (central Slovakia). Homogeneity, long-term trends, as well as inter-annual dry and wet cycles were analyzed for the entire 1895-2004 time series of the Bela River and for the 1931-2004 time series of the Cierny Hron River.Inter-annual fluctuation of the wet and dry periods was identified using spectral analysis. The most significant period is that of 3.6 years. Other significant periods are those of 2.35 years, 13.5 years, and 21 years.Since these periods were found in other rivers of the world, as well as in SO, NAO, and AO phenomena,they can be considered as relating to the general regularity of the Earth. |
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Keywords: | inter-annual discharge fluctuation spectral analysis teleconnection Quasi-Biennial Oscillation Southern Oscillation North Atlantic Oscillation Arctic Oscillation |
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