Monsoon versus ocean circulation controls on paleoenvironmental conditions off southern Sumatra during the past 300,000 years
文献类型：期刊论文
| 作者 | Luckge, A ; Mohtadi, M ; Ruhlemann, C ; Scheeder, G ; Vink, A ; Reinhardt, L ; Wiedicke, M |
| 刊名 | PALEOCEANOGRAPHY
 |
| 出版日期 | 2009-01-01 |
| 卷号 | 24页码:-PA1208 |
| ISSN号 | 0883-8305 |
| 通讯作者 | andreas.lueckge@bgr.de |
| 中文摘要 | A multiproxy record has been acquired from a piston core (SO139-74KL) taken offshore southern Sumatra, an area which is situated in the southwestern sector of the tropical Indo-Pacific Warm Pool. The high-resolution data sets (X-ray fluorescence, total organic carbon, and C-37 alkenones) were used to track changes in paleoproductivity, freshwater budget, and sea surface temperature (SST) of the tropical climate system at orbital time scales over the past 300 ka. Our paleoclimatic data show that enhanced marine paleoproductivity was directly related to strengthening of coastal upwelling during periods of increased boreal summer insolation and associated SE monsoon strength with a precessional cyclicity. Changes in freshwater supply were primarily forced by precession-controlled changes in boreal NW winter monsoon rainfall enclosing an additional sea level component. SST variations of 2 degrees-5 degrees C occurred at eccentricity and precessional cyclicity. We suggest that the sea surface temperature variability off southern Sumatra is predominantly related to three major causes: (1) variations in upwelling intensity; (2) an elevated freshwater input into the southern Makassar Strait leading to reduced supply of warmer surface waters from the western Pacific and increased subsurface water transport via the Indonesian Throughflow into the Indian Ocean; and (3) long-term changes in the intensity or frequency of low-latitude climate phenomena, such as El Nino-Southern Oscillation. |
| 学科主题 | Geosciences, Multidisciplinary; Oceanography; Paleontology |
| 收录类别 | SCI |
| 原文出处 | AMER GEOPHYSICAL UNION |
| 公开日期 | 2011-07-14 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/8421]  |
| 专题 | 南海海洋研究所_海洋科技动态信息-印太暖池系统研究 |
| 推荐引用方式 GB/T 7714 | Luckge, A,Mohtadi, M,Ruhlemann, C,et al. Monsoon versus ocean circulation controls on paleoenvironmental conditions off southern Sumatra during the past 300,000 years[J]. PALEOCEANOGRAPHY,2009,24:-PA1208. |
| APA | Luckge, A.,Mohtadi, M.,Ruhlemann, C.,Scheeder, G.,Vink, A.,...&Wiedicke, M.(2009).Monsoon versus ocean circulation controls on paleoenvironmental conditions off southern Sumatra during the past 300,000 years.PALEOCEANOGRAPHY,24,-PA1208. |
| MLA | Luckge, A,et al."Monsoon versus ocean circulation controls on paleoenvironmental conditions off southern Sumatra during the past 300,000 years".PALEOCEANOGRAPHY 24(2009):-PA1208. |
入库方式： OAI收割
来源：南海海洋研究所
浏览0
下载0
收藏0
其他版本
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。