人民长江2016，Vol.47Issue(8)：23-27,33,6.DOI:10.16232/j.cnki.1001-4179.2016.08.005
鄱阳湖干旱多尺度特征及其与月均水位的相关性
Multi-scale characteristics of drought of Poyang Lake and its association to monthly average water level
张启旺 1张吉 2周涛3
作者信息
- 1. 甘肃省水利水电学校，甘肃 兰州730000
- 2. 武汉大学 水利水电学院，湖北 武汉430072
- 3. 甘肃省住房和城乡建设厅，甘肃 兰州730030
- 折叠
摘要
Abstract
The different 1-month, 3-month, 6-month, 12-month, 24-month and 48-month standardized precipitation index ( SPI) and Standardized Precipitation Evapotranspiration Index ( SPEI) time series are calculated based on the monthly precipitation, mean temperature and respective latitudes of 13 meteorological gauging stations from 1957 to 2013 and the simulta-neous monthly mean water level data in Poyang lake;the multi-scale features for these two time series are analyzed based on the wavelet theory with the Morlet function. The trend of meteorological drought of Poyang Lake is tested by the Mann -Kendall method. The correlation between the different scales of SPI and SPEI time series and the mean monthly water level is analyzed by Spearman coefficient. The results show that the SPI and SPEI time series have a cycle of 68-month period and two strong distri-butions with varied temporal scale. The relationship of meteorological drought of Poyang Lake and the water level decreases with the increase of time scale.关键词
SPI/SPEI/多尺度/小波分析/Mann-Kendall/干旱特征/鄱阳湖Key words
Standardized Precipitation Index (SPI)/Standardized Precipitation Evapotranspiration Index (SPEI)/multi -scale/wavelet analysis/Mann-Kendall/drought feature/Poyang Lake分类
天文与地球科学引用本文复制引用
张启旺,张吉,周涛..鄱阳湖干旱多尺度特征及其与月均水位的相关性[J].人民长江,2016,47(8):23-27,33,6.
