The Impact of Lake-level Fluctuations on the Sediment Composition |
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Authors: | Jaan-Mati Punning Jaanus Terasmaa Tiit Vaasma |
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Institution: | (1) Institute of Ecology, Tallinn University, Uus-Sadama 5, Tallinn, 10120, Estonia |
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Abstract: | Lithological and granulometric investigations of the surface and short core sediments in L. Martiska (northeastern Estonia)
showed that variations in the grain-size parameters and LOI content were influenced by the changes in deposition conditions
during the regression and transgression phases monitored in the lake since the 1960s. During the regression and transgression
phases displacement of the erosion-transport-accumulation zones in the lake took place depending on the bottom topography.
The water level fluctuations are especially clearly reflected in grain-size variations in cores from peripherial area. |
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Keywords: | lake-level fluctuations palaeolimnology resedimentation sediment grain size |
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