IOCAS-IR  > 海洋地质与环境重点实验室
Evolution and variability of the East Asian summer monsoon during the Pliocene: Evidence from clay mineral records of the South China Sea
Wan, Shiming1,2; Tian, Jun3; Steinke, Stephan4; Li, Anchun1; Li, Tiegang1
2010-07-01
发表期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
卷号293期号:1-2页码:237-247
文章类型Article
摘要The Late Pliocene is thought to be characterized by the simultaneous intensification of both the East Asian winter monsoon (EAWM) and East Asian summer monsoon (EASM). However, the evolution of the EASM during the Pliocene remains still controversial and only little is known about the dynamics of the EASM during the Pliocene on orbital time scales. Here we use clay mineral assemblages in sediments from Ocean Drilling Program (ODP) Site 1143 in the southern South China Sea (SCS) to obtain proxy records of past changes in the EASM climate during the Pliocene. Provenance analysis suggests that illite, chlorite and kaolinite originated mainly from the Mekong River drainage area. Smectite was derived mainly from the Indonesian islands. The kaolinite/illite ratio and the chemical index of alteration (CIA) of siliciclastic sediments allowed us to reconstruct the history of chemical weathering and physical erosion of the Mekong River drainage area and thus, the evolution of,the EASM during the Pliocene. Our clay minerals proxy data suggests a stronger EASM during the Early Pliocene than during the Late Pliocene. We propose that the long-term evolution of the EASM has been driven by global cooling rather than the uplift of the Tibetan Plateau. Spectral analysis of kaolinite/ illite ratio displays a set of strong periodicities at 100 ka, 30 ka, 28 ka, 25 ka, and 22 ka. with no clear obliquityrelated signal. Our study suggests that the Pliocene EASM intensity on orbital time scales is not only controlled by the Northern Hemisphere summer insolation, but also strongly influenced by equatorial Pacific ENSO-like ocean atmosphere dynamics. (C) 2010 Elsevier B.V. All rights reserved.; The Late Pliocene is thought to be characterized by the simultaneous intensification of both the East Asian winter monsoon (EAWM) and East Asian summer monsoon (EASM). However, the evolution of the EASM during the Pliocene remains still controversial and only little is known about the dynamics of the EASM during the Pliocene on orbital time scales. Here we use clay mineral assemblages in sediments from Ocean Drilling Program (ODP) Site 1143 in the southern South China Sea (SCS) to obtain proxy records of past changes in the EASM climate during the Pliocene. Provenance analysis suggests that illite, chlorite and kaolinite originated mainly from the Mekong River drainage area. Smectite was derived mainly from the Indonesian islands. The kaolinite/illite ratio and the chemical index of alteration (CIA) of siliciclastic sediments allowed us to reconstruct the history of chemical weathering and physical erosion of the Mekong River drainage area and thus, the evolution of,the EASM during the Pliocene. Our clay minerals proxy data suggests a stronger EASM during the Early Pliocene than during the Late Pliocene. We propose that the long-term evolution of the EASM has been driven by global cooling rather than the uplift of the Tibetan Plateau. Spectral analysis of kaolinite/ illite ratio displays a set of strong periodicities at 100 ka, 30 ka, 28 ka, 25 ka, and 22 ka. with no clear obliquityrelated signal. Our study suggests that the Pliocene EASM intensity on orbital time scales is not only controlled by the Northern Hemisphere summer insolation, but also strongly influenced by equatorial Pacific ENSO-like ocean atmosphere dynamics. (C) 2010 Elsevier B.V. All rights reserved.
关键词East Asian Monsoon Clay Minerals Pliocene South China Sea Odp Leg 184
学科领域Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
DOI10.1016/j.palaeo.2010.05.025
URL查看原文
收录类别SCI
语种英语
WOS记录号WOS:000280007000020
引用统计
被引频次:67[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/5104
专题海洋地质与环境重点实验室
作者单位1.Chinese Acad Sci, Key Lab Marine Geol & Environm, Inst Oceanol, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China
4.Univ Bremen, MARUM Zentrum Marine Umweltwissensch, Ctr Marine Environm Sci, Bremen, Germany
第一作者单位中国科学院海洋研究所
推荐引用方式
GB/T 7714
Wan, Shiming,Tian, Jun,Steinke, Stephan,et al. Evolution and variability of the East Asian summer monsoon during the Pliocene: Evidence from clay mineral records of the South China Sea[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2010,293(1-2):237-247.
APA Wan, Shiming,Tian, Jun,Steinke, Stephan,Li, Anchun,&Li, Tiegang.(2010).Evolution and variability of the East Asian summer monsoon during the Pliocene: Evidence from clay mineral records of the South China Sea.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,293(1-2),237-247.
MLA Wan, Shiming,et al."Evolution and variability of the East Asian summer monsoon during the Pliocene: Evidence from clay mineral records of the South China Sea".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 293.1-2(2010):237-247.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
Evolution and variab(1156KB) 限制开放--浏览
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Wan, Shiming]的文章
[Tian, Jun]的文章
[Steinke, Stephan]的文章
百度学术
百度学术中相似的文章
[Wan, Shiming]的文章
[Tian, Jun]的文章
[Steinke, Stephan]的文章
必应学术
必应学术中相似的文章
[Wan, Shiming]的文章
[Tian, Jun]的文章
[Steinke, Stephan]的文章
相关权益政策
暂无数据
收藏/分享
文件名: Evolution and variability of the East Asian summer monsoon during the Pliocene_ Evidence from clay mineral records of the South China Sea.pdf
格式: Adobe PDF
此文件暂不支持浏览
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。