水力发电学报2013，Vol.32Issue(3)：34-38,5.
基于AWTP指数的辽宁省干旱规律时空分析
Analysis on temporal and spatial distributions of drought events in Liaoning province based on AWTP index
摘要
Abstract
This paper analyzes the temporal and spatial distributions of drought events in Liaoning province recent 50 years on the basis of an index of average waiting time for precipitation (AWTP),using the daily rainfall data at 22 hydrological stations over this province for the period from 1958 to 2008.This analysis shows that in this period,the primary cycle of significant drought events was roughly five years,and the drought events took an intensification trend showing an equivalent dry period of 71 days long for the longest drought in 1995.The decade 1990s was the most severe with a mean equivalent dry period of as long as 65days.In spatial distribution of drought,Liaoning was significantly regionalized with a trend of intensification from east to west,Chaoyang in the west was severely intensified,and Dandong in the east slightly intensified.关键词
水资源/相当干期/AWTP指数/干旱/时空分布特征/辽宁省Key words
water resources/ hydrology and water resourses equivalent dry period/ AWTP index/ drought/spatial and temporal distributions/ Liaoning province分类
农业科技引用本文复制引用
曹永强,杨春祥,张丹,路璐,苏阳..基于AWTP指数的辽宁省干旱规律时空分析[J].水力发电学报,2013,32(3):34-38,5.基金项目
国家973专题计划项目(编号:2010CB951102) （编号:2010CB951102）
中国水利水电科学研究院2010年开放基金(IWHRKF201018) （IWHRKF201018）
国家自然科学基金(51279072). （51279072）
