| 基于小波分析的嫩江、哈尔滨夏季降雨规律研究 |
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| 引用本文： | 缪驰远,汪亚峰,郑袁志.基于小波分析的嫩江、哈尔滨夏季降雨规律研究[J].生态与农村环境学报,2007,23(4):29-32,48. |
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| 作者姓名： | 缪驰远 汪亚峰 郑袁志 |
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| 作者单位： | 1. 北京师范大学,地理学与遥感科学学院/地表过程与资源生态国家重点实验室,北京,100875
2. 中国科学院,生态环境研究中心/城市与区域生态国家重点实验室,北京,100085 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 基于48 a来的夏季降雨资料,选用Morlet小波分析方法对嫩江、哈尔滨夏季降雨序列的多时间尺度进行研究.结果表明:哈尔滨近年来夏季降雨在29～38 a尺度周期变化最明显,模值最大,能量最强;嫩江夏季降雨在19～30 a周期变化较强,能量值较大;2个周期变化都具有随时间推移能量进一步加大的趋势.当前嫩江、哈尔滨夏季降雨均处于枯水大周期内,在未来较长时间里,夏季降雨量将低于多年平均降雨量.
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| 关 键 词： | 嫩江 哈尔滨 降雨 小波分析 Morlet 小波分析 嫩江 哈尔滨 降雨规律 研究 Harbin Summer Rainfall Characteristics 多年平均降雨量 夏季降雨量 长时间 大周期 枯水 趋势 时间推移 能量值 周期变化 多时间尺度 结果 降雨序列 |
| 文章编号： | 1673-4831（2007）04-0029-04 |
| 修稿时间： | 2007-06-06 |
Wavelet-Based Analysis of Characteristics of Summer Rainfall in Nenjiang and Harbin |
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| MIAO Chi-yuan,WANG Ya-feng,ZHENG Yuan-zhi.Wavelet-Based Analysis of Characteristics of Summer Rainfall in Nenjiang and Harbin[J].Journal of Ecology and Rural Environment,2007,23(4):29-32,48. |
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| Authors: | MIAO Chi-yuan WANG Ya-feng ZHENG Yuan-zhi |
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| Institution: | 1. State Key Laboratory of Earth Surface Processes and Resource Ecology/School of Geography, Beijing Normal University, Beijing 100875, China; 2. State Key Laboratory of Urban and Regional Ecology/Research for EcoEnvironmental Sciences, Chinese Academy of Sciences, Beijing 100085, China |
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| Abstract: | Based on 48 years of summer rainfall data, Morlet wavelet analysis was done of the sequence of summer rainfall in Nenjiang and Harbin, on a multi-time scale. Results show that in recent years, the summer rainfall in Harbin displayed the most apparent cyclical variation on a 29 -38-year scale, the largest modulus, and the strongest energy;and the summer rainfall in Nenjiang did an obvious cyclical variation on a 19 - 30-year scale, and its energy value is quite large. Both the two cyclical variations showed a trend of being stronger in energy with the time. Presently, both the summer rainfalls in Nenjiang and Harbin are in a long cyclical period of low-water. It is predicted that in a relatively long period the summer rainfall will be lower than the average of the past 48 years. |
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| Keywords: | Nenjiang Harbin rainfall wavelet analysis Morlet |
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