文献类型：期刊文献

英文题名：A multiproxy reconstruction of Asian winter monsoon variability since the last glacial from southeast offshore Hainan Island, South China Sea

作者：Yang, Jiawen[1];Peng, Shiyun[1];Xu, Jiali[1];Kong, Deming[1,2,3];Tsai, Hung-Ling[4,5,6];Chen, Min-Te[4,5,6];Song, Zhiguang[1]

机构：[1]Guangdong Ocean Univ, Coll Ocean & Meteorol, Lab Coastal Ocean Variat & Disaster Predict, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Dept Educ Guangdong Prov, Key Lab Climate Resources & Environm Continental S, Zhanjiang 524088, Guangdong, Peoples R China;[3]Guangdong Ocean Univ, Shenzhen Res Inst, Shenzhen 518108, Peoples R China;[4]Natl Taiwan Ocean Univ, Inst Earth Sci, Keelung 202, Taiwan;[5]Natl Taiwan Ocean Univ, Ctr Excellence Oceans, Keelung 202, Taiwan;[6]Natl Taiwan Ocean Univ, Ctr Excellence Ocean Engn, Keelung 202, Taiwan

年份：2024

卷号：263

外文期刊名：JOURNAL OF ASIAN EARTH SCIENCES

收录：SCI-EXPANDED(收录号：WOS:001168362400001)、、Scopus(收录号：2-s2.0-85183558806)、WOS

基金：This work was funded by the National Key Research and Development Program of China (2018YFA0605601), the National Natural Science Foundation of China (41606070), program for Scientific Research Start-up funds of Guangdong Ocean University (R17011), Guangdong Provincial College Innovation Team Project (2019KCXTF021) and Project of Enhancing School with Innovation of Guangdong Ocean University (GDOUQ18301). We also thank the NSFC Shiptime Sharing Project (41749907) for supporting the sample collecting on board of R/V "SHIYAN3" implementing the open research cruise NORC 2018-07.

语种：英文

外文关键词：Winter monsoon; South China Sea; Alkenone; SST; Grain size; Last glacial

外文摘要：The evolution of East Asian winter monsoon (EAWM) in tropical oceans has been a key issue in the climatic coupling between high- and low-latitudes. This study aims to investigate the EAWM variability using multiproxy of sediment core XB19S40 in the southeast offshore of Hainan Island, South China Sea. Alkenone derived sea surface temperature (SST), sediment grain size, and elemental ratios show consistent changes over the last 20.7 ka. There were synchronous abrupt changes in the SST, Zr/Rb, K/Ti, and End-members (EMs) during the Bolling- Allerod warming period, Younger Dryas and 8.2 ka cooling events. The Zr/Rb and EM2 (18.7-84.6 mu m, 40.1 mu m) changes reflect the EAWM and are highly coincident with records in high latitudes. These changes suggest that the EAWM gradually weakened from the last glacial maximum to early Holocene, experienced minor strengthening in the late Holocene but has diminished since 1 ka. In contrast, the indicators K/Ti and EM1 (0.2-18.7 mu m, 9.9 mu m) suggest that the East Asian summer monsoon is in the opposite phase. Spectral analysis demonstrates that the intensity of East Asian monsoons in the SCS were mainly affected by solar activity on a centennial-scale. The results of this study provide new insight into the complexity of the EAWM system and emphasize the importance of understanding multiple components of the climate system.