| 近50年来长江入海径流量对太平洋年代际震荡变化的响应 |
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| 引用本文： | 张瑞,汪亚平,潘少明.近50年来长江入海径流量对太平洋年代际震荡变化的响应[J].海洋通报,2011,30(5):572-577. |
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| 作者姓名： | 张瑞 汪亚平 潘少明 |
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| 作者单位： | 1. 淮海工学院 测绘工程学院,江苏连云港222005;南京大学海岸与海岛开发教育部重点实验室,江苏南京,210093;江苏省海洋资源开发研究院,江苏连云港222001
2. 南京大学海岸与海岛开发教育部重点实验室,江苏南京,210093 |
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| 基金项目： | 国家重点基础研究发展规划项目（2002CB412401）；国家自然科学基金（40106009、40576040）；淮海工学院科研启动基金（KQ09041） |
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| 摘 要： | 太平洋年代际震荡(Pacific Decadal Oscillation)是类似于ENS0型的具有年代际时间尺度变化的太平洋气候变率.PDO既对长期的气候变化趋势产生扰动,又会对年际变化事件(如ENSO)产生重要影响,可使ENSO事件的频率和强度改变,以致影响到ENSO和季风的关系.通过对百年来的PDO数据进行HHT分...
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| 关 键 词： | PDO EMD 径流量 长江 |
| 收稿时间： | 2010/12/29 0:00:00 |
| 修稿时间： | 2011/3/21 0:00:00 |
Response of discharges from Changjiang River on Pacific Decadal Oscillation in the past 50 years |
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| ZHANG Rui,WANG Ya-ping and PAN Shao-ming.Response of discharges from Changjiang River on Pacific Decadal Oscillation in the past 50 years[J].Marine Science Bulletin,2011,30(5):572-577. |
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| Authors: | ZHANG Rui WANG Ya-ping and PAN Shao-ming |
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| Institution: | 1. School of Geodesy and Geomatics Engineering, Huaihai Institute of Technology, Lianyungang 222005, China; 2. MOE Key Laboratory of Coast and Island Development, Nanjing University, Nanjing 210093, China; 3. Jiangsu Marine Resources Development Research;MOE Key Laboratory of Coast and Island Development, Nanjing University, Nanjing 210093, China;;MOE Key Laboratory of Coast and Island Development, Nanjing University, Nanjing 210093, China; |
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| Abstract: | Pacific Decadal Oscillation (PDO) is a long-term ENSO-like variability of the north Pacific. The index of PDO is denoted by the first principal component of EOF of the north Pacific SST. The PDO not only disturb the long-live trend of climate changes, but also influences significantly annual climate change (e.g. ENSO). The relationship between ENSO and monsoon also is influenced by PDO. Hilbert-Huang Transform (HHT) is used to analyze PDO over one hundred years to obtain 8 IMF and 1 residual. The results show that PDO has the quasi-2 and 6-year variability as well as significant quasi-15 and 30 and 60-year multi-decadal timescales. The discharges from Changjiang River in the last 50 years exit 7 IMF and 1 residual, which indicate that water discharges have seasonal change, quasi-2 and 4 and 8-year variability as well as significant 16 and 22-year multi-decadal variability. It is found that the good correlations between the discharges and PDO exit on the low frequency of long cycle multi-decadal timescales. Moreover, the relationship of both residuals is also significant. It is indicated that PDO influences water discharge from Changjiang River on long-term multi-decadal timescales. |
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| Keywords: | PDO EMD Discharge Changjiang River |
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