Glacier Dynamics in the Southern Part of East Siberia (Russia) from the Final Part of the LGM to the Present Based on from Biogeochemical Proxies from Bottom Sediments of Proglacial Lakes | Sciact - CRIS-система Института катализа

Glacier Dynamics in the Southern Part of East Siberia (Russia) from the Final Part of the LGM to the Present Based on from Biogeochemical Proxies from Bottom Sediments of Proglacial Lakes Научная публикация

Журнал

Quaternary International
ISSN: 1040-6182

Вых. Данные

Год: 2019, Том: 524, Номер: SI, Страницы: 4-12 Страниц : 9 DOI: 10.1016/j.quaint.2019.03.003

Ключевые слова

Glaciers; Proglacial lakes; Bottom sediments; East Siberia; East Sayan Ridge; Baikalsky Ridge; Barguzinsky Ridge; Kodar Ridge

Авторы

Stepanova O.G. ¹ , Trunova V.A. ² , Osipov E.Yu ¹ , Kononov E.E. ¹ , Vorobyeva S.S. ¹ , Parkhomchuk E.V. ⁵ , Kalinkin P.N. ³ , Vorobyeva E.E. ³ , Vershinin K.E. ¹ , Rastigeev S.A. ⁴ , Fedotov A.P. ¹

Организации

1	Limnological Institute of the Siberian Branch of RAS, Irkutsk, Russia
2	Nikolaev Institute of Inorganic Chemistry of the Siberian Branch of RAS, Novosibirsk, Russia
3	Novosibirsk State University, Novosibirsk, Russia
4	Budker Institute of Nuclear Physics, Novosibirsk, Russia
5	Boreskov Institute of Catalysis the Siberian Branch of RAS, Novosibirsk, Russia

Информация о финансировании (2)

1	Российский фонд фундаментальных исследований	17-29-05016
2	Федеральное агентство научных организаций России	0345-2016-0006 (АААА-А16-116122110063-0)

In the present study, we have reconstructed glacier dynamics based on the high (1–0.5 mm) resolution X-ray fluorescence spectrometry scanning, the Fourier-transform infrared technique and 14C-dating used in the analyses of the lake bottom sediments, fluvioglacial deposits and a peat bog situated on East Siberian Mountains (East Sayan, Baikal, Barguzin and Kodar Ridges) between 51.723°N, 100.601°E and 56.885°N, 117.580°E. We have found what the largest glacier deposits on the Baikal shoreline, so-called Tompuda end moraine, formed in two stages. The first stage occurred until ca. 12 cal ka BP; then, there was a short pause. The second stage ended by 9.5 cal ka BP. Azarova glacier (Kodar Ridge) retreated upwards the Kodar Ridge by ca. 11 cal ka BP. It may indicate that the Bølling-Allerød warming was very evident, and it was a trigger for these deglacial events in East Siberia. It is most likely that “remains” of the Late Pleistocene glaciers were cardinally shrunk or fully disappeared during the Holocene Thermal Optimum in the southern part of East Siberia. Climate conditions were suitable for glacier formation after 3 cal ka BP. However, if there were new glaciers in the Middle Holocene, their sizes were likely to be less than 1 km2. For this reason, these glaciers should have completely melted during the Roman and Medieval Warm Periods. It is most likely, small glaciers observed at present in the south of East Siberia were mainly formed during the Little Ice Age.

Stepanova O.G. , Trunova V.A. , Osipov E.Y. , Kononov E.E. , Vorobyeva S.S. , Parkhomchuk E.V. , Kalinkin P.N. , Vorobyeva E.E. , Vershinin K.E. , Rastigeev S.A. , Fedotov A.P.
Glacier Dynamics in the Southern Part of East Siberia (Russia) from the Final Part of the LGM to the Present Based on from Biogeochemical Proxies from Bottom Sediments of Proglacial Lakes
Quaternary International. 2019. V.524. NSI. P.4-12. DOI: 10.1016/j.quaint.2019.03.003 WOS Scopus РИНЦ OpenAlex

Поступила в редакцию:	13 дек. 2018 г.
Принята к публикации:	2 мар. 2019 г.
Опубликована online:	8 мар. 2019 г.
Опубликована в печати:	30 июл. 2019 г.

Web of science:	WOS:000487671100002
Scopus:	2-s2.0-85062642517
РИНЦ:	38705631
OpenAlex:	W2921422127

БД	Цитирований
Scopus	8
РИНЦ	14
Web of science	7
OpenAlex	7