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циркуляция водных слоев
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[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en] |
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overturn (limnology)
The circulation, especially in the fall and spring, of the layers of water in a lake or sea, whereby surface water sinks and mixes with bottom water; it is caused by changes in density differences due to changes in temperature, and is especially common wherever lakes are icebound in winter. (Source: BJGEO)
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