| 基于子波变换的降雨氧同位素时间序列分解及重构 |
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| 引用本文： | 谭忠成,陆宝宏,胡宾. 基于子波变换的降雨氧同位素时间序列分解及重构[J]. 水电能源科学, 2009, 27(2) |
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| 作者姓名： | 谭忠成 陆宝宏 胡宾 |
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| 作者单位： | 河海大学水文水资源学院,江苏,南京,210098;浙江省水利水电勘测设计院,浙江,杭州,310002 |
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| 摘 要： | 引入子渡变换法对香港站29 a月平均降雨δsO时间序列进行了分析,并对分解后的序列进行了重构.结果表明,重构后序列与原序列吻合,且香港站降雨氧同位素时间序列存在两个时间尺度上(65、12个月)的周期性变化规律,该法有效可行,可供借鉴.
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| 关 键 词： | 降雨 氧同位素 时间序列 子波变换 |
Wavelet Decomposition and Reconstruction of Time Series of Oxygen Isotope in Rainfall Based on Wavelet Transformation |
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| TAN Zhongcheng LU Baohong HU Bin. Wavelet Decomposition and Reconstruction of Time Series of Oxygen Isotope in Rainfall Based on Wavelet Transformation[J]. International Journal Hydroelectric Energy, 2009, 27(2) |
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| Authors: | TAN Zhongcheng LU Baohong HU Bin |
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| Affiliation: | 1.College of Hydrology and Water Resources;Hohai University;Nanjing 210098;China;2.Zhejiang Design Institute of Water Conservancy and Hydroelectric Power;Hangzhou 310002;China |
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| Abstract: | The method and theory of wavelet packet transform is introduced to decompose and reconstruct time series of monthly mean composition of oxygen-18 in rainfall.Complicated time series of monthly mean composition of oxygen-18 in rainfall can be decomposed to different sub sequences in different time scales by wavelet packet transform,based on which medium and long-term forecasting models of oxygen-18 in rainfall can be built.The paper takes time series of monthly mean composition of oxygen-18 in rainfall in th... |
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| Keywords: | rainfall oxygen isotope time series wavelet transform |
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