摘要
利用至2000年三川河流域17站的降水量基本资料,在统计分析降水基本特点和近30年降水变化趋势的基础上,选取雨量代表站,计算优选区域各级降水日数、降水累计量和平均降水强度及其与流域汛期径流量的关系,并建立天然径流量计算公式,计算分析降水变化对径流量的影响。
Rianfall variation and its change trend are analyzed first with data from 1970～2000 of 17 rainfall-stations in Sanchuanhe basin. Based on selection of representive stations, the precipitation days, accumulative amount and average intensity are calculated. According to relationship between rainfall indicators and natural runoff in flood period, the fomula of the natural runoff in flood season is established. Then, the effect of the precipitation variation on runoff is analyzed.
出处
《西北水资源与水工程》
2003年第3期8-12,共5页
Northwest Water Resources & Water Engineering
基金
国家重点基础研究发展规划项目(G1999043404)
水利部科技创新项目(SCX2002-18)
关键词
径流
降水变化
降水强度
降水变化
三川河流域
黄河中游
precipitation variation
runoff
runoff computation
Sanchuanhe river basin
middle Yellow river
