安徽农业科学2017，Vol.45Issue(30)：166-168,3.
1960-2015年延吉市降雨量小波分析
Wavelet Analysis on the Precipitation of Yanji City during 1960-2015
摘要
Abstract
Based on the precipitation from 1960 to 2015 in Yanji City,the multiple time scales of precipitation sequences were studied by the Morlet complex wavelet method.The results showed that the precipitation in Yanji City had obvious interdecadal and interannual variability in the past 56 years, it may still be a dry period in the short term but will increase after ten years;the precipitation in Yanji City contained 5 peri-odic variations, and the periodic variations were most pronounced and the energy was the strongest in the time scale of 25-30 years and 17-23 years;there were four relatively obvious periodic scale centers of precipitation variation,according to the time scale of 22 and 28 years, Yan-ji was still in a high water period in 2015 and would be transformed into a dry season in a few years.关键词
降雨量/时间尺度变化/Morlet复小波分析/延吉市Key words
Precipitation/Time scale change/Morlet complex wavelet analysis/Yanji City分类
农业科技引用本文复制引用
余凤,赵春子..1960-2015年延吉市降雨量小波分析[J].安徽农业科学,2017,45(30):166-168,3.基金项目
国家自然科学基金项目(41361015) （41361015）
吉林省教育厅"十二五"科学技术研究项目(吉教科合字〔2015〕第35号). （吉教科合字〔2015〕第35号）
