Seasonal climatic instability in the western Chinese Loess Plateau during Marine Isotope Stages 12–10
Abstract Because of similar astronomical background, Marine Isotope Stage (MIS) 11 is viewed as an analogue of the Holocene, but the evolution of seasonal climatic instability during MIS 11 has not been well investigated. Here we present a time series of land-snail eggs—a recently-developed proxy of...
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Nature Portfolio
2023-04-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-32923-8 |
| _version_ | 1797850122229383168 |
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| author | Fengjiang Li Naiqin Wu Yajie Dong Yiquan Yang Yueting Zhang Dan Zhang Qingzhen Hao Houyuan Lu |
| author_facet | Fengjiang Li Naiqin Wu Yajie Dong Yiquan Yang Yueting Zhang Dan Zhang Qingzhen Hao Houyuan Lu |
| author_sort | Fengjiang Li |
| collection | DOAJ |
| description | Abstract Because of similar astronomical background, Marine Isotope Stage (MIS) 11 is viewed as an analogue of the Holocene, but the evolution of seasonal climatic instability during MIS 11 has not been well investigated. Here we present a time series of land-snail eggs—a recently-developed proxy of seasonal cooling events—from the Chinese Loess Plateau (CLP) to investigate seasonal climatic instability during MIS 11 and adjacent glacials. Due to the impact of low temperatures on egg hatching, egg-abundance peaks document seasonal cooling events. A total of five egg-abundance peaks were recorded in the CLP during MIS 12, MIS 11 and MIS 10. Three peaks are strong and occur close to glacial inception or interglacial-to-glacial transition; two weaker peaks occur during MIS11. These peaks imply seasonal climatic instability intensifies mainly during glacial initiation or transition. All these events correspond to ice-sheet growth and the loss of ice-rafted debris at high northern latitudes. Moreover, they occurred at the minima of local spring insolation during the MIS 12 and MIS 10 glacials, but at the maxima during the MIS 11 interglacial. This may contribute to the difference in the intensity of seasonal cooling events between low-eccentricity glacials and interglacials. Our results provide new evidence for understanding low-eccentricity interglacial–glacial evolution. |
| first_indexed | 2024-04-09T18:55:14Z |
| format | Article |
| id | doaj.art-bbdab4af1d6f41aea0b520579f0a6693 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-09T18:55:14Z |
| publishDate | 2023-04-01 |
| publisher | Nature Portfolio |
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| spelling | doaj.art-bbdab4af1d6f41aea0b520579f0a66932023-04-09T11:13:57ZengNature PortfolioScientific Reports2045-23222023-04-011311810.1038/s41598-023-32923-8Seasonal climatic instability in the western Chinese Loess Plateau during Marine Isotope Stages 12–10Fengjiang Li0Naiqin Wu1Yajie Dong2Yiquan Yang3Yueting Zhang4Dan Zhang5Qingzhen Hao6Houyuan Lu7Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of SciencesKey Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of SciencesKey Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of SciencesKey Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of SciencesKey Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of SciencesKey Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of SciencesKey Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of SciencesKey Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of SciencesAbstract Because of similar astronomical background, Marine Isotope Stage (MIS) 11 is viewed as an analogue of the Holocene, but the evolution of seasonal climatic instability during MIS 11 has not been well investigated. Here we present a time series of land-snail eggs—a recently-developed proxy of seasonal cooling events—from the Chinese Loess Plateau (CLP) to investigate seasonal climatic instability during MIS 11 and adjacent glacials. Due to the impact of low temperatures on egg hatching, egg-abundance peaks document seasonal cooling events. A total of five egg-abundance peaks were recorded in the CLP during MIS 12, MIS 11 and MIS 10. Three peaks are strong and occur close to glacial inception or interglacial-to-glacial transition; two weaker peaks occur during MIS11. These peaks imply seasonal climatic instability intensifies mainly during glacial initiation or transition. All these events correspond to ice-sheet growth and the loss of ice-rafted debris at high northern latitudes. Moreover, they occurred at the minima of local spring insolation during the MIS 12 and MIS 10 glacials, but at the maxima during the MIS 11 interglacial. This may contribute to the difference in the intensity of seasonal cooling events between low-eccentricity glacials and interglacials. Our results provide new evidence for understanding low-eccentricity interglacial–glacial evolution.https://doi.org/10.1038/s41598-023-32923-8 |
| spellingShingle | Fengjiang Li Naiqin Wu Yajie Dong Yiquan Yang Yueting Zhang Dan Zhang Qingzhen Hao Houyuan Lu Seasonal climatic instability in the western Chinese Loess Plateau during Marine Isotope Stages 12–10 Scientific Reports |
| title | Seasonal climatic instability in the western Chinese Loess Plateau during Marine Isotope Stages 12–10 |
| title_full | Seasonal climatic instability in the western Chinese Loess Plateau during Marine Isotope Stages 12–10 |
| title_fullStr | Seasonal climatic instability in the western Chinese Loess Plateau during Marine Isotope Stages 12–10 |
| title_full_unstemmed | Seasonal climatic instability in the western Chinese Loess Plateau during Marine Isotope Stages 12–10 |
| title_short | Seasonal climatic instability in the western Chinese Loess Plateau during Marine Isotope Stages 12–10 |
| title_sort | seasonal climatic instability in the western chinese loess plateau during marine isotope stages 12 10 |
| url | https://doi.org/10.1038/s41598-023-32923-8 |
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