文献类型：期刊文献

英文题名：Early Holocene climate change recorded by sediment grain sizes on the northern South China Sea shelf

作者：Qu, Xiaoxu[1];Huang, Chao[2,3,4];Huang, Long[5];Luo, Yongyi[2];Huang, Jiang[2];Kong, Deming[2,3,4];Deng, Wenfeng[6];Huang, Xin[2,3,4];Rao, Zhiguo[1]

机构：[1]Hunan Normal Univ, Sch Geog Sci, Hunan Prov Key Lab Ecoenvironm Changes & Carbon Se, Changsha 410081, Peoples R China;[2]Guangdong Ocean Univ, Coll Ocean & Meteorol, Lab Coastal Ocean Variat & Disaster Predict, Zhanjiang 524088, Peoples R China;[3]Guangdong Ocean Univ, Key Lab Climate Resources & Environm Continental S, Dept Educ Guangdong Prov, Zhanjiang 524088, Peoples R China;[4]Minist Nat Resources, Key Lab Space Ocean Remote Sensing & Applicat, Beijing, Peoples R China;[5]Lingnan Normal Univ, Sch Geog Sci, Zhanjiang 524048, Guangdong, Peoples R China;[6]Chinese Acad Sci, State Key Lab Isotope Geochem, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China

年份：2026

卷号：312

外文期刊名：JOURNAL OF ASIAN EARTH SCIENCES

收录：SCI-EXPANDED(收录号：WOS:001865246300001)、、Scopus(收录号：2-s2.0-105048823062)、WOS

基金：This work was financially supported by National Natural Science Foundation of China (42371162), the Innovative Team Project of Guangdong Universities (2019KCXTF021), First-class Discipline Plan of Guangdong Province (080503032101, 231420003), Guangdong Provincial Observation and Research Station for Tropical Ocean Environment in Western Coastal Waters (GSTOEW), the Hunan Provincial Postgraduate Research and Innovation Project (CX20250724) and the Young Student Fundamental Research Project of the Hunan Provincial Natural Science Foundation (2026JJ90212). We thank Lihui Wang and Yuhan Xie for their help with laboratory analysis. And we appreciate Dong Xu, Mingkun Li and Liancheng Hao for providing the grain size data of surface sediments collected from the South China Sea and Jianjiang River. The data for this paper are available as the online supplementary dataset.

语种：英文

外文关键词：Asian summer monsoon; Holocene; Grain size; Climate change; The southern China continental shelf

外文摘要：Reconstructing hydrological conditions on the southern China continental shelf during the early Holocene remains challenging because of the scarcity of high-resolution records and the influence of diverse depositional dynamics. Most studies of climate change in the northern South China Sea (SCS) have focused on the mid-to-late Holocene or longer timescales, whereas early Holocene records remain limited and commonly have relatively low temporal resolution. In this study, we use high-resolution grain-size and geochemical elements from the northern SCS continental shelf to investigate sediment provenance and reconstruct climate change between 9200 and 6500 cal yr BP. Elemental and grain-size analyses indicate that sediments in the HKA-1 core were primarily derived from the proximal rivers. End-Member Modeling Analysis (EMMA) shows that EM1 and EM3 correspond to fine- and coarse-grained fractions, respectively, both of which were primarily transported by proximal rivers. Because these end-members represent products of terrestrial weathering and riverine transport, they provide reliable proxies for Asian Summer Monsoon (ASM) intensity. Comparisons with regional paleoclimate records suggest that humid conditions prevailed from 9200 to 7600 cal yr BP, corresponding to a stronger ASM, whereas drier conditions from 7600 to 6500 cal yr BP reflected a weakened ASM. Our high-resolution sedimentary record suggests that early Holocene ASM variability in the northern SCS was modulated by the combined influence of solar insolation and the tropical Pacific sea surface temperature gradient.