Results of monitoring of the changes in the hydrochemical structure of the central and Southern Caspian Sea over 1995–2005 |
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| Authors: | V V Sapozhnikov K K Kivva M P Metreveli N V Mordasova |
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| Institution: | (1) Russian Federal Research Institute of Fisheries and Oceanography, Moscow, Russia |
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| Abstract: | The results of decennial monitoring of the Caspian Sea were summarized, which allowed revealing the “pumping” of nutrients from the euphotic layer to deepwater depressions of the Central and Southern Caspian Sea. In parallel, in the deepwater depressions, growth of hypoxia to values of 0.2–0.5 ml O2/l proceeds. In 2006, hydrogen sulfide was registered in the near-bottom layer of the South Caspian Sea Basin. It is shown that the transformation of the hydrochemical structure was directed towards the conditions observed at the times of Bruevich (1933–1934), but no complete coincidence has yet been reached. |
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