Multi-Scale Characteristic and Oscillation Analysis of Precipitation and Evaporation Series in Yuyang

摘要：

According to precipitation and evaporation time series in Yuyang region, this paper adopts Morlet wavelet analysis method, analyzes time series configuration in detail, and discusses multi-scale variations and mutation of precipitation and evaporation. The result shows that, precipitation and evaporation series exist multiscale characteristic, the main period is 16y and 15y, secondary period is 3y, 7y, and 9y. Penod changes complicatedly, large scale comprises small scale; oscijlation point of a= 16y and a=15y delays 3-4y compared with a=9y; precipitation oscillation point delays ly compared with evaporation; in deferent time scale oscillation point is deferent comparison with evaporation, precipitation oscillation point appearance in the Late 1980s and 1990s, evaporation time series oscillation point appearance in Mid 1980s and Mid and Late 1990s.

关键词： wavelet analysis precipitation evporation oscillation point Yuyang region

作者: Wang Huaqi Zhang Maosheng Dang Xueya

作者单位: Xian center of geological survey,CGS School of environment science & engineering, Changan universi Xian center of geological survey,CGS Xian,China

会议类型: 国际会议

会议名称: 2010 3rd International Conference on Environmental and Computer Science(2010年第三届环境与计算机科学国际会议 ICECS 2010)

会议地点: 昆明

会议语种:英文

页码: 95-97

在线出版日期: 2010-10-17（万方平台首次上网日期，不代表论文的发表时间）