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首页> 外文期刊>Australian journal of water resources >Growth curves and temporal patterns of short duration design storms for extreme events
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Growth curves and temporal patterns of short duration design storms for extreme events

机译：极端事件的短期设计风暴的增长曲线和时间模式

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摘要

There are many important dams and other structures on catchments smaller than 1000 km~2 with flood response times less than 24 hours, however these catchments have been largely overlooked in previous research into large and extreme floods. This payer is an initial step in "catching up" design practice for short duration rainfall events to the current best practice available for estimation of floods from rainfall events with durations of 24 hours and greater. Three issues are specifically addressed. A regional analysis of short duration rainfall depths is conducted to extend the frequency curve beyond an AEP of 1 in 100. Rainfall frequency curves are estimated for durations between 0.5 and 12 hours, using data from ten pluviograph sites around Australia. Sets of temporal patterns are derived that could be useful in joint probability analysis of short duration rainfall events. Temporal patterns for rainfall an tecedent to large rainfall events were also extracted from the analysis. The effects of these new rainfall depths and temporal patterns on flood frequency curves are tested by applying them to a rainfall-runoff routing model for a small catchment in Southern Australia.
机译：在小于1000 km〜2的流域上有许多重要的水坝和其他结构，其洪水响应时间小于24小时，但是这些流域在先前关于大洪水和极端洪水的研究中被大大忽略了。该付款人是“赶上”短时降雨事件的设计实践的第一步，是目前可用于估算持续时间超过24小时或更长的降雨事件的洪水的最佳实践的第一步。具体解决了三个问题。进行了短时降雨深度的区域分析，以将频率曲线扩展到超过AEP的100分之一。降雨频率曲线的估计持续时间为0.5到12小时，使用的是来自澳大利亚十个集雨仪的数据。导出了时间模式集，可用于短期降雨事件的联合概率分析。从分析中还提取了降雨的时间模式以及大降雨事件的发生。通过将这些新的降雨深度和时间模式对洪水频率曲线的影响进行测试，方法是将它们应用于澳大利亚南部小流域的降雨径流路由模型。

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