KFU. Card publication. Tracking late Holocene climate change and the 1908 Tunguska impact event from lake sediments in central Siberia

KAZAN
FEDERAL UNIVERSITY

- RUS
- 中文
- ES

TRACKING LATE HOLOCENE CLIMATE CHANGE AND THE 1908 TUNGUSKA IMPACT EVENT FROM LAKE SEDIMENTS IN CENTRAL SIBERIA

Form of presentation

Articles in international journals and collections

Year of publication

2025

��

��

Authors, employees of KFU

Nazarova Larisa Borisovna, author

Palagushkina Olga Viktorovna, author

Frolova Larisa Aleksandrovna, author

Bibliographic description in the original language

Denis Yu. Rogozin, Larisa B. Nazarova, Natalia A Rudaya, Larisa A Frolova, Galina N Bolobanshchikova, Olga V Palagushkina, Andrei V Darin, Artur V Meydus Tracking late Holocene climate change and the 1908 Tunguska impact event from lake sediments in central Siberia Quaternary Research, 2025, p.1-19,

Annotation

The palaeoclimate of a vast region of Central Siberia is almost unexplored in comparison to the adjacent regions of Siberia. We investigated a 2200-year-old sediment section from a small, deep, freshwater Lake Zapovednoye near the site of the «Tunguska impact event of 1908«. Analysis of the chemical composition of sediments and variations of bioproxy (pollen, chironomids, Cladocera, diatoms) revealed traces of climatic fluctuations during the investigated time period: a cool climate before 1000 CE, the Medieval Climatic Optimum, the Little Ice Age, and the modern warming. An increased content of terrigenous elements was identified at the depth corresponding to ca 1908 CE. This layer presumably appeared due to the erosion of the soil cover after the fall of trees following the Tunguska event, the largest impact event on Earth in recorded history. For the first time we could detect the reaction of the lake biota to the impact event. We revealed that the taxonomic diversity of hydrobionts (chironomids and cladocerans), significantly declined after the catastrophe, probably due to increased turbidity, and relatively quickly recovered later. Pollen and diatom assemblages demonstrate weaker compositional shifts. This layer served as an additional stratigraphic marker to support the age model of the investigated core

Keywords

climate change, Siberia, Tunguska 1908 impact event, XRF, 43 permafrost, pollen, chironomids, Cladocera, diatoms

The name of the journal

Quaternary Research

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=310096&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Nazarova Larisa Borisovna	ru_RU
dc.contributor.author	Palagushkina Olga Viktorovna	ru_RU
dc.contributor.author	Frolova Larisa Aleksandrovna	ru_RU
dc.date.accessioned	2025-01-01T00:00:00Z	ru_RU
dc.date.available	2025-01-01T00:00:00Z	ru_RU
dc.date.issued	2025	ru_RU
dc.identifier.citation	Denis Yu. Rogozin, Larisa B. Nazarova, Natalia A Rudaya, Larisa A Frolova, Galina N Bolobanshchikova, Olga V Palagushkina, Andrei V Darin, Artur V Meydus Tracking late Holocene climate change and the 1908 Tunguska impact event from lake sediments in central Siberia Quaternary Research, 2025, p.1-19,	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=310096&p_lang=2	ru_RU
dc.description.abstract	Quaternary Research	ru_RU
dc.description.abstract	The palaeoclimate of a vast region of Central Siberia is almost unexplored in comparison to the adjacent regions of Siberia. We investigated a 2200-year-old sediment section from a small, deep, freshwater Lake Zapovednoye near the site of the «Tunguska impact event of 1908«. Analysis of the chemical composition of sediments and variations of bioproxy (pollen, chironomids, Cladocera, diatoms) revealed traces of climatic fluctuations during the investigated time period: a cool climate before 1000 CE, the Medieval Climatic Optimum, the Little Ice Age, and the modern warming. An increased content of terrigenous elements was identified at the depth corresponding to ca 1908 CE. This layer presumably appeared due to the erosion of the soil cover after the fall of trees following the Tunguska event, the largest impact event on Earth in recorded history. For the first time we could detect the reaction of the lake biota to the impact event. We revealed that the taxonomic diversity of hydrobionts (chironomids and cladocerans), significantly declined after the catastrophe, probably due to increased turbidity, and relatively quickly recovered later. Pollen and diatom assemblages demonstrate weaker compositional shifts. This layer served as an additional stratigraphic marker to support the age model of the investigated core	ru_RU
dc.language.iso	ru	ru_RU
dc.subject	climate change	ru_RU
dc.subject	Siberia	ru_RU
dc.subject	Tunguska 1908 impact event	ru_RU
dc.subject	XRF	ru_RU
dc.subject	43 permafrost	ru_RU
dc.subject	pollen	ru_RU
dc.subject	chironomids	ru_RU
dc.subject	Cladocera	ru_RU
dc.subject	diatoms	ru_RU
dc.title	Tracking late Holocene climate change and the 1908 Tunguska impact event from lake sediments in central Siberia	ru_RU
dc.type	Articles in international journals and collections	ru_RU