| Late Holocene paleoenvironmental changes in the southern Okinawa Trough inferred from a diatom record | |
Li DongLing1; Jiang Hui1; Li TieGang2 ; Zhao MeiXun3; Jiang, H (reprint author), E China Normal Univ, Key Lab Geog Informat Sci, Shanghai 200062, Peoples R China
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| 2011-04-01 | |
| 发表期刊 | CHINESE SCIENCE BULLETIN
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| ISSN | 1001-6538 |
| 卷号 | 56期号:11页码:1131-1138 |
| 文章类型 | Article |
| 摘要 | We analyzed sediment diatoms from core MD05-2908 to infer climate and paleoenvironmental changes in the southern Okinawa Trough (SOT) over the past 1000 years. Because the study area is located in the East Asia monsoon area and beneath the main axis of Kuroshio Current, the climatic and hydrographical conditions are strongly influenced by both of these factors. The species used as environmental indicators, including the Kuroshio Current species (KC species) and freshwater species, were investigated in this paper. Changes in the abundance of the two groups of species revealed significant variations in water temperature and hydrography in the SOT during the Medieval Warm Period (MWP) and the Little Ice Age (LIA). From 950-1500 AD, the abundance of the KC species increased fluctuantly, while the freshwater species decreased, showing that the influence of the Kuroshio Current was intensified at that interval and the precipitation of the study area was relatively low. The KC species decreased remarkably and was maintained at a low abundance during the interval of 1500-1900 AD, which suggests that the impact of the Kuroshio Current on the SOT weakened during the period corresponding to the LIA. Moreover, the high abundance of the freshwater species at the same interval indicates a distinct increase in precipitation in northeastern Taiwan, which may be correlated to the south-detention of the rainfall belt in China caused by the southward migration of the western Pacific subtropical high.; We analyzed sediment diatoms from core MD05-2908 to infer climate and paleoenvironmental changes in the southern Okinawa Trough (SOT) over the past 1000 years. Because the study area is located in the East Asia monsoon area and beneath the main axis of Kuroshio Current, the climatic and hydrographical conditions are strongly influenced by both of these factors. The species used as environmental indicators, including the Kuroshio Current species (KC species) and freshwater species, were investigated in this paper. Changes in the abundance of the two groups of species revealed significant variations in water temperature and hydrography in the SOT during the Medieval Warm Period (MWP) and the Little Ice Age (LIA). From 950-1500 AD, the abundance of the KC species increased fluctuantly, while the freshwater species decreased, showing that the influence of the Kuroshio Current was intensified at that interval and the precipitation of the study area was relatively low. The KC species decreased remarkably and was maintained at a low abundance during the interval of 1500-1900 AD, which suggests that the impact of the Kuroshio Current on the SOT weakened during the period corresponding to the LIA. Moreover, the high abundance of the freshwater species at the same interval indicates a distinct increase in precipitation in northeastern Taiwan, which may be correlated to the south-detention of the rainfall belt in China caused by the southward migration of the western Pacific subtropical high. |
| 学科领域 | Science & Technology - Other Topics |
| DOI | 10.1007/s11434-011-4369-3 |
| URL | 查看原文 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000289898600011 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/11505 |
| 专题 | 海洋地质与环境重点实验室 |
| 通讯作者 | Jiang, H (reprint author), E China Normal Univ, Key Lab Geog Informat Sci, Shanghai 200062, Peoples R China |
| 作者单位 | 1.E China Normal Univ, Key Lab Geog Informat Sci, Shanghai 200062, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China 3.Ocean Univ China, Minist Educ, Key Lab Theoret & Appl Marine Chem & Chem Engn, Qingdao 266100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li DongLing,Jiang Hui,Li TieGang,et al. Late Holocene paleoenvironmental changes in the southern Okinawa Trough inferred from a diatom record[J]. CHINESE SCIENCE BULLETIN,2011,56(11):1131-1138. |
| APA | Li DongLing,Jiang Hui,Li TieGang,Zhao MeiXun,&Jiang, H .(2011).Late Holocene paleoenvironmental changes in the southern Okinawa Trough inferred from a diatom record.CHINESE SCIENCE BULLETIN,56(11),1131-1138. |
| MLA | Li DongLing,et al."Late Holocene paleoenvironmental changes in the southern Okinawa Trough inferred from a diatom record".CHINESE SCIENCE BULLETIN 56.11(2011):1131-1138. |
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