长江科学院院报2018，Vol.35Issue(6)：42-46,5.DOI:10.11988/ckyyb.20161341
山洪灾害预警雨量指标讨论及在无资料地区的确定
Rainfall Threshold for Flash Flood Warning:Redefinition and Calculation for Ungauged Areas
摘要
Abstract
Confusion arises in practical application due to multiple definitions of rainfall threshold for flash flood warning.In view of this,we analyzed and summarized the existing definitions,and redefined the rainfall threshold for early warning into two types:planned rainfall threshold and emergency rainfall threshold.In line with the mech-anism of flow yield and confluence,we proposed a simple and feasible method of calculating the emergency rainfall threshold for ungauged areas.Comparison of calculation result between the two types indicates that the variations of planned rainfall threshold and emergency rainfall threshold are featured with different rules.In forming prevention and control measures for flash flood,we should make clear the objectives (for early warning or for engineering de-sign)in determining the indicator type to realize a reasonable prevention and control.关键词
山洪灾害/预警时段/规划预警雨量/应急预警雨量/无资料地区Key words
flash flood disaster/early warning period/planned rainfall threshold for early warning/emergency rainfall threshold/ungauged area分类
建筑与水利引用本文复制引用
秦毅,陈星星,曾杉..山洪灾害预警雨量指标讨论及在无资料地区的确定[J].长江科学院院报,2018,35(6):42-46,5.基金项目
国家自然科学基金面上项目(51679184) （51679184）
