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Li X, Zhou Y, Han Z, Yuan X, Yi S, Zeng Y, Qin L, Lu M, Lu H. Loess deposits in the low latitudes of East Asia reveal the ~20-kyr precipitation cycle. Nat Commun 2024; 15:1023. [PMID: 38310099 PMCID: PMC10838313 DOI: 10.1038/s41467-024-45379-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 01/18/2024] [Indexed: 02/05/2024] Open
Abstract
The cycle of precipitation change is key to understanding the driving mechanism of the East Asian summer monsoon (EASM). However, the dominant cycles of EASM precipitation revealed by different proxy indicators are inconsistent, leading to the "Chinese 100 kyr problem". In this study, we examine a high-resolution, approximately 350,000-year record from a low-latitude loess profile in China. Our analyses show that variations in the ratio of dithionite-citrate-bicarbonate extractable iron to total iron are dominated by the ~20-kyr cycle, reflecting changes in precipitation. In contrast, magnetic susceptibility varies with the ~100-kyr cycle and may be mainly controlled by temperature-induced redox processes or precipitation-induced signal smoothing. Our results suggest that changes in the EASM, as indicated by precipitation in this region, are mainly forced by precession-dominated insolation variations, and that precipitation and temperature may have varied with different cycles over the past ~350,000 years.
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Affiliation(s)
- Xusheng Li
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China
| | - Yuwen Zhou
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China
| | - Zhiyong Han
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China.
| | - Xiaokang Yuan
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China
| | - Shuangwen Yi
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China
| | - Yuqiang Zeng
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China
| | - Lisha Qin
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China
| | - Ming Lu
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China
| | - Huayu Lu
- School of Geography and Ocean Science, Nanjing University, Nanjing, 210023, China
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Jin CS, Xu D, Li M, Hu P, Jiang Z, Liu J, Miao Y, Wu F, Liang W, Zhang Q, Su B, Liu Q, Zhang R, Sun J. Tectonic and orbital forcing of the South Asian monsoon in central Tibet during the late Oligocene. Proc Natl Acad Sci U S A 2023; 120:e2214558120. [PMID: 37011203 PMCID: PMC10104490 DOI: 10.1073/pnas.2214558120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 12/28/2022] [Indexed: 04/05/2023] Open
Abstract
The modern pattern of the Asian monsoon is thought to have formed around the Oligocene/Miocene transition and is generally attributed to Himalaya-Tibetan Plateau (H-TP) uplift. However, the timing of the ancient Asian monsoon over the TP and its response to astronomical forcing and TP uplift remains poorly known because of the paucity of well-dated high-resolution geological records from the TP interior. Here, we present a precession-scale cyclostratigraphic sedimentary section of 27.32 to 23.24 million years ago (Ma) during the late Oligocene epoch from the Nima Basin to show that the South Asian monsoon (SAM) had already advanced to the central TP (32°N) at least by 27.3 Ma, which is indicated by cyclic arid-humid fluctuations based on environmental magnetism proxies. A shift of lithology and astronomically orbital periods and amplified amplitude of proxy measurements as well as a hydroclimate transition around 25.8 Ma suggest that the SAM intensified at ~25.8 Ma and that the TP reached a paleoelevation threshold for enhancing the coupling between the uplifted plateau and the SAM. Orbital short eccentricity-paced precipitation variability is argued to be mainly driven by orbital eccentricity-modulated low-latitude summer insolation rather than glacial-interglacial Antarctic ice sheet fluctuations. The monsoon data from the TP interior provide key evidence to link the greatly enhanced tropical SAM at 25.8 Ma with TP uplift rather than global climate change and suggest that SAM's northward expansion to the boreal subtropics was dominated by a combination of tectonic and astronomical forcing at multiple timescales in the late Oligocene epoch.
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Affiliation(s)
- Chun-Sheng Jin
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
- Innovation Academy for Earth Science, Chinese Academy of Sciences, Beijing 100029, China
| | - Deke Xu
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
- Innovation Academy for Earth Science, Chinese Academy of Sciences, Beijing 100029, China
| | - Mingsong Li
- School of Earth and Space Sciences,Peking University, Beijing 100871, China
| | - Pengxiang Hu
- Research School of Earth Sciences, The Australian National University, Canberra, ACT 0200, Australia
| | - Zhaoxia Jiang
- College of Marine Geosciences, Ocean University of China, Qingdao 266100, China
| | - Jianxing Liu
- Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China
| | - Yunfa Miao
- Key Laboratory of Desert and Desertification, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Fuli Wu
- Key Laboratory of Continental Collision and Plateau uplift, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Wentian Liang
- State Key Laboratory of Continental Dynamics, Northwest University, Xi’an 710069, China
| | - Qiang Zhang
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
| | - Bai Su
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
| | - Qingsong Liu
- Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ran Zhang
- Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
| | - Jimin Sun
- Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
- Innovation Academy for Earth Science, Chinese Academy of Sciences, Beijing 100029, China
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Yi L, Medina-Elizalde M, Tan L, Kemp DB, Li Y, Kletetschka G, Xie Q, Yao H, He H, Deng C, Ogg JG. Plio-Pleistocene deep-sea ventilation in the eastern Pacific and potential linkages with Northern Hemisphere glaciation. SCIENCE ADVANCES 2023; 9:eadd1467. [PMID: 36827375 PMCID: PMC9956117 DOI: 10.1126/sciadv.add1467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
Antarctic bottom water (AABW) production is a key factor governing global ocean circulation, and the present disintegration of the Antarctic Ice Sheet slows it. However, its long-term variability has not been well documented. On the basis of high-resolution chemical scanning of a well-dated marine ferromanganese nodule from the eastern Pacific, we derive a record of abyssal ventilation spanning the past 4.7 million years and evaluate its linkage to AABW formation over this period. We find that abyssal ventilation was relatively weak in the early Pliocene and persistently intensified from 3.4 million years ago onward. Seven episodes of markedly reduced ocean ventilation indicative of AABW formation collapse are identified since the late Pliocene, which were accompanied by key stages of Northern Hemisphere glaciation. We suggest that the interpolar climate synchronization within these inferred seven collapse events may have intensified global glaciation by inducing poleward moisture transport in the Northern Hemisphere.
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Affiliation(s)
- Liang Yi
- State Key Laboratory of Marine Geology, Tongji University, Shanghai, China
| | | | - Liangcheng Tan
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, China
- Institute of Global Environmental Change, Xi’an Jiaotong University, Xi’an, China
| | - David B. Kemp
- State Key Laboratory for Biogeology and Environmental Geology and Hubei Key Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences (Wuhan), Wuhan, China
| | - Yanzhen Li
- State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an, China
- State Key Laboratory for Biogeology and Environmental Geology and Hubei Key Laboratory of Critical Zone Evolution, School of Earth Sciences, China University of Geosciences (Wuhan), Wuhan, China
| | - Gunther Kletetschka
- Institute of Hydrogeology, Engineering Geology, and Applied Geophysics, Faculty of Science, Charles University, Prague, Czech Republic
- Geophysical Institute, University of Alaska Fairbanks, Fairbanks, AK, USA
| | - Qiang Xie
- Institute of Deep-sea Science and Engineering, Chinese Academy of Sciences, Sanya, China
| | - Huiqiang Yao
- Key Laboratory of Marine Mineral Resources, Ministry of Natural Resources, Guangzhou Marine Geological Survey, China Geological Survey, Guangzhou, China
- Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
| | - Huaiyu He
- State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Chenglong Deng
- State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - James G. Ogg
- Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, West Lafayette, IN, USA
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, China
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Abstract
The widely accepted “Milankovitch theory” explains insolation-induced waxing and waning of the ice sheets and their effect on the global climate on orbital timescales. In the past half century, however, the theory has often come under scrutiny, especially regarding its “100-ka problem.” Another drawback, but the one that has received less attention, is the “monsoon problem,” which pertains to the exclusion of monsoon dynamics in classic Milankovitch theory even though the monsoon prevails over the vast low-latitude (∼30° N to ∼30° S) region that covers half of the Earth’s surface and receives the bulk of solar radiation. In this review, we discuss the major issues with the current form of Milankovitch theory and the progress made at the research forefront. We suggest shifting the emphasis from the ultimate outcomes of the ice volume to the causal relationship between changes in northern high-latitude insolation and ice age termination events (or ice sheet melting rate) to help reconcile the classic “100-ka problem.” We discuss the discrepancies associated with the characterization of monsoon dynamics, particularly the so-called “sea-land precession-phase paradox” and the “Chinese 100-ka problem.” We suggest that many of these discrepancies are superficial and can be resolved by applying a holistic “monsoon system science” approach. Finally, we propose blending the conventional Kutzbach orbital monsoon hypothesis, which calls for summer insolation forcing of monsoons, with Milankovitch theory to formulate a combined “Milankovitch-Kutzbach hypothesis” that can potentially explain the dual nature of orbital hydrodynamics of the ice sheet and monsoon systems, as well as their interplays and respective relationships with the northern high-latitude insolation and inter-tropical insolation differential. Orbital-scale climate variations of Earth are dictated by ice sheet and monsoon Views of “monsoon system science” reinforce the Kutzbach monsoon hypothesis A unified Milankovitch-Kutzbach hypothesis better explains the orbital dual nature
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Yang X, Ni X, Fu C. Phylogeographical Analysis of the Freshwater Gudgeon Huigobio chenhsienensis (Cypriniformes: Gobionidae) in Southern China. Life (Basel) 2022; 12:1024. [PMID: 35888112 PMCID: PMC9318155 DOI: 10.3390/life12071024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/17/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023] Open
Abstract
The freshwater gudgeon Huigobio chenhsienensis (Cypriniformes: Gobionidae) is a small fish endemic to southern China. In this study, we used mitochondrial cytochrome b gene (Cytb), from wide-ranging samplings of H. chenhsienensis from the Ou River (the central of southern China) to the Yangtze River Basin (the northernmost part of southern China) to explore genetic variations and the evolutionary history of H. chenhsienensis in southern China. In total, 66 haplotypes were identified from Cytb sequences of 142 H. chenhsienensis individuals, which could be divided into lineages A, B, and C with divergence times of ~4.24 Ma and ~3.03 Ma. Lineage A was distributed in the lower reaches of the Yangtze River, the Oujiang River, and the Jiao River, lineage B was distributed in the Qiantang River and the Cao'e River, whereas lineage C was restricted to the Poyang Lake drainage from the middle reaches of the Yangtze River. Lineage A could be subdivided into sub-lineages A-I, A-II, A-III, and A-IV, with divergence times of 1.30, 0.97, and 0.44 Ma. Lineage C could be subdivided into sub-lineages C-I and C-II, with a divergence time of 0.85 Ma. Our findings indicate that climate change during the Pliocene and Pleistocene eras, as well as the limited dispersal ability of H. chenhsienensis, have been major drivers for shaping the phylogeographical patterns of H. chenhsienensis.
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