Abstract
Russian-German project PLOT (Paleolimnological Transect) aims at investigating the regional responses of the quaternary climate and environment on external forcing and feedback mechanisms along a more than 6000 km long longitudinal transect crossing Northern Eurasia. The well-dated record from Lake Elgygytgyn used as reference site for comparison the local climatic and environmental histories. Seismic surveys and sediment coring up to 54 m below lake floor performed in the frame of the project on Ladoga Lake (North-West of Russia; 2013), Lake Bolshoye Shchuchye (Polar Ural; 2016), Lake Levinson-Lessing and Lake Taymyr (Taymyr Peninsula; 2016-2017), Lake Emanda (Verkhoyansk Range; 2017). Fieldwork at Polar Ural and Taymyr Peninsula was conducted in collaboration with the Russian-Norwegian CHASE (Climate History along the Arctic Seaboard of Eurasia) project. Here, we present the major results of the project obtained so far.
Highlights
Despite much progress made over the last decades, the nature and reasons of climate variability on Earth still are insufficiently understood
In order to reconstruct the climatic and environmental history during Late Quaternary times seismic surveys and sediment coring performed on five lakes, which together with Lake Elgygytgyn form a more than 6000 km long longitudinal transect across northern Eurasia
During 2016 and 2017 seismic surveys and sediment coring performed in Taymyr Peninsula on lakes Levinson-Lessing (47 m-long sediment core) and Taymyr (14 m and 16 m-long sediment cores)
Summary
Despite much progress made over the last decades, the nature and reasons of climate variability on Earth still are insufficiently understood. For the vast landmasses of the Eurasian Arctic many of the natural archives so far investigated are of limited value to understand the climatic and environmental history. The problem encountered with lake sediments is that most of the records existing are limited in age to the Holocene and Late Weichselian.
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