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Late Quaternary Lake-Level Changes of Lake El´gygytgyn, NE Siberia
Stockholm University, Faculty of Science, Department of Physical Geography and Quaternary Geology.
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2011 (English)In: Quaternary Research, ISSN 0033-5894, E-ISSN 1096-0287, Vol. 76, 411-451 p.Article in journal (Refereed) Published
Abstract [en]

Lake El'gygytgyn is situated in a 3.6 Ma old impact crater in northeastern Siberia. Presented here is areconstruction of the Quaternary lake-level history as derived from sediment cores from the southern lakeshelf. There, a cliff-like bench 10 m below the modern water level has been investigated. Deep-watersediments on the shelf indicate high lake levels during a warm Mid-Pleistocene period. One period with lowlake level prior to Marine Oxygen Isotope Stage (MIS) 3 has been identified, followed by a period of high lakelevel (10 m above present). In the course of MIS 2 the lake level dropped to −10 m. At the end of MIS 2 thebench was formed and coarse beach sedimentation occurred. Subsequently, the lake level rose rapidly to theHolocene level. Changes in water level are likely linked to climate variability. During relatively temperateperiods the lake becomes free of ice in summer. Strong wave actions transport sediment parallel to the coastand towards the outlet, where the material tends to accumulate, resulting in lake level rise. During coldperiods the perennial lake ice cover hampers any wave activity and pebble-transport, keeping the outlet openand causing the lake level to drop.

Place, publisher, year, edition, pages
2011. Vol. 76, 411-451 p.
National Category
Geosciences, Multidisciplinary
Research subject
Quarternary Geology
URN: urn:nbn:se:su:diva-69338OAI: diva2:476213
Available from: 2012-01-11 Created: 2012-01-11 Last updated: 2012-01-11Bibliographically approved

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Preusser, Frank
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