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Tytuł artykułu

Analysis of long-term variations in physico-chemical parameters of seawater in the southern Baltic Sea; an approach to incomplete data series

Autorzy Łysiak-Pastuszak, E.  Cyberski, J. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
EN Long-term trends in the variations of physical and chemical parameters characterising seawater were analysed by a method, originally used in climatology, allowing detection of optimal cycles of these variations in incomplete (intermittent) data time series. The method was used to analyse measurements of water temperature, salinity, density, oxygen saturation and nutrient concentrations (phosphate, nitrate and silicate) from station BMP L1 (P1) in the Gdansk Deep region obtained between 1979 and 1996. All parameters revealed a pattern of regular cycles, the spectrum of the cycles being dependent on the parameters and water layer. As regards reconstruction and forecasting in the deterministic-stochastic model, statistically significant correlation coefficients in the 0.57-0.97 range were obtained between the calculated and empirical data for all the parameters examined. The correlation was poorest in the case of silicate. Linear regression trends calculated in the deterministic-stochastic model were in relatively good agreement with those obtained using Hirsch's non-parametric test.
Słowa kluczowe
EN periodic variations   long-term changes   physico-chemical parameters   Baltic Sea  
Wydawca Polish Academy of Sciences, Institute of Oceanology
Czasopismo Oceanologia
Rocznik 1999
Tom No. 41 (4)
Strony 553--572
Opis fizyczny Bibliogr. 14 poz., tab., wykr.
autor Łysiak-Pastuszak, E.
autor Cyberski, J.
Kolekcja BazTech
Identyfikator YADDA bwmeta1.element.baztech-article-BUS8-0015-0029