Research output: Contribution to journal › Article › peer-review
Ice-dammed lakes and rerouting of the drainage of northern Eurasia during the Last Glaciation. / Mangerud, Jan; Jakobsson, Martin; Alexanderson, Helena; Astakhov, Valery; Clarke, Garry K.C.; Henriksen, Mona; Hjort, Christian; Krinner, Gerhard; Lunkka, Juha Pekka; Möller, Per; Murray, Andrew; Nikolskaya, Olga; Saarnisto, Matti; Svendsen, John Inge.
In: Quaternary Science Reviews, Vol. 23, No. 11-13, 01.06.2004, p. 1313-1332.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Ice-dammed lakes and rerouting of the drainage of northern Eurasia during the Last Glaciation
AU - Mangerud, Jan
AU - Jakobsson, Martin
AU - Alexanderson, Helena
AU - Astakhov, Valery
AU - Clarke, Garry K.C.
AU - Henriksen, Mona
AU - Hjort, Christian
AU - Krinner, Gerhard
AU - Lunkka, Juha Pekka
AU - Möller, Per
AU - Murray, Andrew
AU - Nikolskaya, Olga
AU - Saarnisto, Matti
AU - Svendsen, John Inge
PY - 2004/6/1
Y1 - 2004/6/1
N2 - During the Quaternary period, ice sheets centred over the Barents and Kara seas expanded several times onto mainland Russia and blocked northflowing rivers, such as the Yenissei, Ob, Pechora and Mezen. Large ice-dammed lakes with reversed outlets, e.g. toward the Caspian Sea, formed south of these ice sheets. Some lakes are reconstructed from shorelines and lacustrine sediments, others mainly from ice-sheet configuration. Ice-dammed lakes, considerably larger than any lake on Earth today, are reconstructed for the periods 90-80 and 60-50ka. The ages are based on numerous optically stimulated luminescence (OSL) dates. During the global Last Glacial Maximum (LGM, about 20ka) the Barents-Kara Ice Sheet was too small to block these eastern rivers, although in contrast to the 90-80 and 60-50ka maxima, the Scandinavian Ice Sheet grew large enough to divert rivers and meltwater across the drainage divide from the Baltic Basin to the River Volga, and that way to the Caspian Sea. Climate modelling shows that the lakes caused lower summer temperatures on the continent and on the lower parts of the ice sheet. The final drainage of the best mapped lake is modelled, and it is concluded that it probably emptied within few months. We predict that this catastrophic outburst had considerable impact on sea-ice formation in the Arctic Ocean and on the climate of a much larger area.
AB - During the Quaternary period, ice sheets centred over the Barents and Kara seas expanded several times onto mainland Russia and blocked northflowing rivers, such as the Yenissei, Ob, Pechora and Mezen. Large ice-dammed lakes with reversed outlets, e.g. toward the Caspian Sea, formed south of these ice sheets. Some lakes are reconstructed from shorelines and lacustrine sediments, others mainly from ice-sheet configuration. Ice-dammed lakes, considerably larger than any lake on Earth today, are reconstructed for the periods 90-80 and 60-50ka. The ages are based on numerous optically stimulated luminescence (OSL) dates. During the global Last Glacial Maximum (LGM, about 20ka) the Barents-Kara Ice Sheet was too small to block these eastern rivers, although in contrast to the 90-80 and 60-50ka maxima, the Scandinavian Ice Sheet grew large enough to divert rivers and meltwater across the drainage divide from the Baltic Basin to the River Volga, and that way to the Caspian Sea. Climate modelling shows that the lakes caused lower summer temperatures on the continent and on the lower parts of the ice sheet. The final drainage of the best mapped lake is modelled, and it is concluded that it probably emptied within few months. We predict that this catastrophic outburst had considerable impact on sea-ice formation in the Arctic Ocean and on the climate of a much larger area.
UR - http://www.scopus.com/inward/record.url?scp=2642557360&partnerID=8YFLogxK
U2 - 10.1016/j.quascirev.2003.12.009
DO - 10.1016/j.quascirev.2003.12.009
M3 - Article
AN - SCOPUS:2642557360
VL - 23
SP - 1313
EP - 1332
JO - Quaternary Science Reviews
JF - Quaternary Science Reviews
SN - 0277-3791
IS - 11-13
ER -
ID: 50790720