ITCZ and ENSO pacing on East Asian winter monsoon variation during the Holocene: Sedimentological evidence from the Okinawa Trough
文献类型：期刊论文
| 作者 | Zheng, XF ; Li, AC ; Wan, SM ; Jiang, FQ ; Kao, SJ ; Johnson, C |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
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| 出版日期 | 2014 |
| 卷号 | 119期号:7页码:4410-4429 |
| ISSN号 | 2169-9275 |
| 通讯作者 | acli@qdio.ac.cn |
| 中文摘要 | Deep-sea fan sediments provide an excellent geological archive for paleoenvironment reconstruction. Grain size, clay mineral and elemental (Ti, Fe, Ca) compositions were measured for a core retrieved from a submarine fan in the Okinawa Trough. Varimax-rotated Principal Component Analysis (V-PCA) on time-evolution of grain size spectrum reveals that, since the Holocene, sediment was transported mainly by the benthic nepheloid layer (33%) and upper layers (33%) which is driven by the East Asian winter monsoon (EAWM). The intensification of the Kuroshio Current during the Holocene, masks the fluvial signal of the summer monsoon and obstructs clay minerals derived from the Yellow River, a major contributor prior to 12 ka BP. A new grain size index (GSI), which represents the EAWM well, exhibits a negative correlation with the delta O-18 record in Dongge Cave, China during the Holocene when sea level was relatively steady. This anti-correlation suggests the southward migration of the Intertropical Convergence Zone (ITCZ). The consistency among our records and rainfall records in Peru, Ti counts in the Cariaco Basin, monsoon records in Oman and the averaged summer insolation pattern at 30 degrees N further support the ITCZ's impact on monsoon systems globally. Cross-Correlation Analyses for GSI and log(Ti/Ca) against delta O-18 record in Dongge Cave reveal a decoupling between the East Asian winter and summer monsoon during 5500-2500 cal yr BP, with greater complexity in the last 2500 years. This can be attributed to exacerbated ENSO mode fluctuations and possibly anthropogenic interference superimposed on insolation and ITCZ forcing. |
| 学科主题 | Oceanography |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [40776030, 41376057]; Strategic Priority Research Program of the Chinese Academy of Sciences [XDA11030302] |
| 原文出处 | AMER GEOPHYSICAL UNION |
| WOS记录号 | WOS:000340415500024 |
| 公开日期 | 2014-12-11 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/10613]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 推荐引用方式 GB/T 7714 | Zheng, XF,Li, AC,Wan, SM,et al. ITCZ and ENSO pacing on East Asian winter monsoon variation during the Holocene: Sedimentological evidence from the Okinawa Trough[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2014,119(7):4410-4429. |
| APA | Zheng, XF,Li, AC,Wan, SM,Jiang, FQ,Kao, SJ,&Johnson, C.(2014).ITCZ and ENSO pacing on East Asian winter monsoon variation during the Holocene: Sedimentological evidence from the Okinawa Trough.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,119(7),4410-4429. |
| MLA | Zheng, XF,et al."ITCZ and ENSO pacing on East Asian winter monsoon variation during the Holocene: Sedimentological evidence from the Okinawa Trough".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 119.7(2014):4410-4429. |
入库方式： OAI收割
来源：南海海洋研究所
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