| 皖北地区年雨量的小波分析 |
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| 引用本文： | 王效瑞,方茸.皖北地区年雨量的小波分析[J].安徽师范大学学报(自然科学版),2000,28(1):69-71,75. |
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| 作者姓名： | 王效瑞 方茸 |
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| 作者单位： | 安徽省气象中心,安徽,合肥230061 |
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| 摘 要： | 应用小波分析方法对皖北地区年降水量波动进行分析 ,得出在 2 0年左右的时间尺度下 ,所研究区域年雨量可分成 6个偏多偏少时期 ,并指出这些降水水量偏多偏少时段是相对于不同的时间尺度而言的 .利用方差贡献分析 ,得出该区域年雨量以 2年或 6年的振荡为主 .预计今后仍维持旱重于涝的趋势
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| 关 键 词： | 小波分析 皖北地区 年降水量 波动变化规律 |
WAVELET ANALYSIS FOR ANNUAL PRECIPITATION OF ANHUI NORTHERN AREA |
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| WANG Xiao-rui,FANG Rong.WAVELET ANALYSIS FOR ANNUAL PRECIPITATION OF ANHUI NORTHERN AREA[J].Journal of Anhui Normal University(Natural Science Edition),2000,28(1):69-71,75. |
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| Authors: | WANG Xiao-rui FANG Rong |
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| Abstract: | A wavelet transform was applied to analyse the annual precipitation of Anhui northern area. We found that the precipitation of this area can be separated into 6 periods in the last 50 years. And,which with more or less periods in relation to different time scales. Then by using wavelet variance analysis, it is indicated that 2 or 6 years are dominant oscillation periods for annual precipitation.Finally, the drought trend was expected to maintain in future, but the precipitation positive anomaly will be at 1999 year in this area. |
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| Keywords: | northern of Anhui wavelet analysis annual precipitation |
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