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Seasonal Changes in Sediments in Lake Van, Turkey

38.6N 42.9E

April 29th, 2013 Category: Lakes, Sediments

Turkey – April 28th, 2013

The varved sediments (the layer or series of layers of sediment deposited in a body of still water in one year) of Lake Van (the greyish white salt lake in the upper right quadrant), in Turkey, provide a high-quality continental archive of seasonal to decadal-scale climate variability. Remotely-sensed total suspended-matter concentrations, validated by contemporaneous water-column sampling, show great temporal and lateral variations (whitings and turbidity plumes).

From 2006 to 2009, sequential sediment traps recorded high particle fluxes during spring and fall, medium fluxes during summer, and almost zero flux during winter. Some fluxes are controlled by river discharge (precipitation and snowmelt) during spring, by high productivity during summer, and by river discharge (precipitation before snowfall starts) and mixing during fall (click here for more information).

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