| Форма представления | Статьи в зарубежных журналах и сборниках |
| Год публикации | 2025 |
| Язык | английский |
|
Назарова Лариса Борисовна, автор
Палагушкина Ольга Викторовна, автор
Фролова Лариса Александровна, автор
|
| Библиографическое описание на языке оригинала |
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, |
| Аннотация |
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 |
| Ключевые слова |
climate change, Siberia, Tunguska 1908 impact event, XRF,
43 permafrost, pollen, chironomids, Cladocera, diatoms |
| Название журнала |
Quaternary Research
|
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https://repository.kpfu.ru/?p_id=310096 |
Полная запись метаданных  |
| Поле DC |
Значение |
Язык |
| dc.contributor.author |
Назарова Лариса Борисовна |
ru_RU |
| dc.contributor.author |
Палагушкина Ольга Викторовна |
ru_RU |
| dc.contributor.author |
Фролова Лариса Александровна |
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/?p_id=310096 |
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 |
Статьи в зарубежных журналах и сборниках |
ru_RU |
|
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