A high-resolution stalagmite record from Luoshui Cave, Central China over the past 23.5 kyr
A high-resolution stalagmite record from Luoshui Cave, Central China over the past 23.5 kyr
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中国中部洛水洞过去 23.5 公里的高分辨率石笋记录
DOI：
10.1016/j.quascirev.2022.107443
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发表时间：
2022-04
影响因子：
4
通讯作者：
R. Lawrence Edwards
中科院分区：
文献类型：
--
作者：
Zhenjun Wang;Shitao Chen;Yongjin Wang;Kan Zhao;Yijia Liang;Hai Cheng;Qingfeng Shao;Xianfeng Wang;Jingwei Zhang;Quan Wang;Xiumin Zhai;R. Lawrence Edwards
一个连续的高分辨率记录，从一个精确定年的石笋跨越最后一个岁差周期提供了新的见解，从轨道到百年尺度的气候变化的动态。对湖北省洛水洞600 mm长的石笋（LS 46）进行了24230 Th定年和2047个子样品的氧、碳稳定同位素测定。石笋LS 46 δ 18 O与已发表的中国季风区石笋δ 18 O时间序列一致，并密切跟踪了北方半球夏季日射量（NHSI）在7月21日的变化。此外，石笋LS 46 δ 18 O与重建的大理湖平面历史和边缘季风区树轮δ 18 O记录具有显著的相关性。在此基础上，我们解释了石笋LS 46 δ 18 O反映了大尺度季风环流，并叠加了可能与有效湿度有关的局地气候信号。此外，石笋LS 46 δ 18 O还显示了7 kyr B. P.以来4次持续时间较长的极弱季风事件。这四次弱季风事件与东亚夏季风区西北边缘的树木年轮记录有较好的对应关系。值得注意的是，石笋记录和树木年轮记录之间的良好对应关系也为我们评估全新世中晚期过渡期、中世纪温暖期（MWP）和小冰期（LIA）期间的气候和文化演变提供了良好的年代学支持。在早中全新世，δ 18 O剖面显示出10个持续时间近500年的百年季风旋回，振幅约为10.8 ‰。小波分析进一步揭示了全新世早中期东亚夏季风存在近500年和200年的周期振荡，研究表明太阳活动和北大西洋涛动（NAO）/北大西洋深水（NADW）共同驱动了亚洲季风的主导近500年周期。
A continuous high-resolution record from a precisely-dated stalagmite spanning the last precessional cycle provides new insight into the dynamics of climate change from orbital to centennial scales. A 600-mm length stalagmite (LS46) collected from the Luoshui Cave, Hubei Province, Central China, was well-dated (a total of 24230Th dates) and high-resolved sampled for oxygen and carbon stable isotopic measurements (2047 subsamples in total). The stalagmite LS46 δ18O is consistent with other published stalagmite δ18O time series in monsoonal China, and closely tracks changes in the Northern Hemisphere summer insolation (NHSI) on July 21stthroughout the past 23.5 kyr. Besides, the stalagmite LS46 δ18O shows significant correlations with the reconstructed Dali lake-level history and tree-ring δ18O records in the marginal monsoon regions. On this basis, we interpret that the stalagmite LS46 δ18O reflects the large-scale monsoon circulation with a superimposed local climate signal that might be related to effective humidity. Furthermore, the stalagmite LS46 δ18O exhibited four long-lasting extremely weak monsoon events since 7 kyr B.P.. These four weak monsoon events corresponded well with the tree-ring record in the northwestern fringe of the East Asian summer monsoon (EASM) region. Notably, the good correspondence between the stalagmite record and the tree-ring record also provides a good chronological support for our assessment of the climate and cultural evolution during the middle-late Holocene transition, the medieval warm period (MWP) and Little Ice Age (LIA). During the early-middle Holocene, the detrended δ18O profile revealed 10 multi-centennial monsoon cycles with a duration of nearly 500 yr and the amplitude of ∼0.8‰. The wavelet analysis further discloses that the EASM has nearly 500 yr and 200 yr periodic oscillations in the early-middle Holocene, research indicated that the solar activity and the North Atlantic Oscillation (NAO)/North Atlantic Deep Water (NADW) jointly drive the dominant nearly 500 yr cycle of the Asian monsoon.
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DOI：
10.1063/1.4975498
发表时间：
2017-02
期刊：
--
影响因子：
--
作者：
L. Gray;W. Ball;S. Misios
通讯作者：
L. Gray;W. Ball;S. Misios
自末次盛冰期以来中国西南千年尺度的水文气候变化与热带印度洋有关
影响因子：
5.8
作者：
Zhang Enlou;Zhao Cheng;Xue Bin;Liu Zhonghui;Yu Zicheng;Chen Rong;Shen Ji
通讯作者：
Shen Ji
影响因子：
5.2
作者：
G. Wiles;R. D’Arrigo;R. Villalba;P. E. Calkin;D. Barclay
通讯作者：
G. Wiles;R. D’Arrigo;R. Villalba;P. E. Calkin;D. Barclay
影响因子：
3
作者：
Chao Huang;G. Wei;Wu-Xian Li;Yuanfang Liu
通讯作者：
Chao Huang;G. Wei;Wu-Xian Li;Yuanfang Liu
影响因子：
5
作者：
D. Tremaine;P. Froelich;Yang Wang
通讯作者：
D. Tremaine;P. Froelich;Yang Wang