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A Study on Warnning Criteria Investigation of Automated Rainfall Warning System -Focused on Realationship of Water Level, Discharge and Precipitation -  

Ahn, Jae-Chan (소방방재청 복구지원과)
Lee, Jong-Seol (소방방재청 국립방재교육연구원 방재연구소)
Chol, Woo-Chung (소방방재청 국립방재교육연구원 방재연구소)
Lee, Byong-Ju (세종대학교 토목공학과)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.8, no.4, 2008 , pp. 101-109 More about this Journal
Abstract
Automated rainfall warning system is a facility to prevent casualties who were recreating in the down stream region with operating lead broadcasting or signaling warning automatically when torrential rainfall occurs in mountainous area. But standard of conventional warning does not consider the characteristics of basin, and warning signal. Evacuation signal 1 and evacuation signal 2 are uniformly signaled when the 10minute moving total of observed rainfall is higher than 4 mm, 6 mm, and 8 mm respectively. therefore, local governments and relative agencies had re-established the standard of warning by analyzing the risk water level, critical discharge and reference rainfall, which are considering the characteristics of basin. In this study the standard of conventional and re-established warning of weolseong basin, which is available to acquire a real rainfall. There are analyzed by considering the risk water level, critcal discharge and reference rainfall. Also this study compares rainfall of conventional and re-established warning standard and indentifies problems by analyzing adequacy of rainfall estimation for warning and proposes alternative. The standard of conventional warning which investigates with the converted rainfall(unit of a minute) issued too many alarm. The re-established standard upward has the necessity which will be regulated about the alarm announcement number of times. Considers the safety, upward regulation of alarm standard rainfall is a necessity which will be prudent.
Keywords
Automated rainfall warning system; Observed rainfall; Warning Criteria; critical discharge;
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