Prediction of Water Distribution System Contamination Based on Wildfire Burn Severity in Wildland Urban Interface Communities
Prediction of Water Distribution System Contamination Based on Wildfire Burn Severity in Wildland Urban Interface Communities
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DOI：
10.1021/acsestwater.0c00073
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发表时间：
2021-02-12
期刊：
影响因子：
--
通讯作者：
Fischer, Erica C.
中科院分区：
文献类型：
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作者：
Schulze, Stefanie S.;Fischer, Erica C.
野火对荒地城市界面（WUI）社区基础设施的破坏引起了人们对这些社区内高燃料负荷密度的巨大和不可预见的影响的关注。在过去三年中，野火破坏了地面结构，地下水分配系统部件的火灾破坏造成受影响地区的饮用水受到污染。为了量化野火危害对WUI社区造成的潜在水污染风险，根据烧伤严重程度对风险进行评估。这项研究发现，传统的方法计算烧伤严重程度，使用卫星图像是不合适的分类本地烧伤严重程度内WUI社区。相反，WUI社区内的局部烧伤严重程度可以通过受损结构的密度来量化。本研究使用的水采样数据和结果从城市的圣罗莎和天堂镇开发脆弱性函数估计的概率超过加州的最大污染物水平给定的样本位置周围的损坏的结构。这项研究的结果将提供有用的信息，WUI水务公司实施缓解战略和脆弱性的位置在整个供水系统，以尽量减少损害。
The devastation to infrastructure in wildland urban interface (WUI) communities caused by wildfires has brought attention to the dramatic and unforeseen impacts of high fuel load density within these communities. In the past three years, above-ground structures have been damaged by wildfire and fire damage to underground water distribution system components has caused contamination of the drinking water in affected areas. To quantify the potential water contamination risks posed by wildfire hazards on WUI communities, the risk is assessed on the basis of burn severity. This study found that traditional methods of calculating burn severity using satellite imagery were not appropriate for classifying localized burn severity within WUI communities. Instead, local burn severity within WUI communities can be quantified by the density of damaged structures. This research uses water sampling data and results from the City of Santa Rosa and the Town of Paradise to develop fragility functions for estimating the probability of a water sample exceeding California maximum contaminant levels given the number of damaged structures surrounding the sample location. Results of this research will provide useful information for WUI water utilities regarding the implementation of mitigation strategies and location of vulnerabilities throughout their water distribution systems to minimize damage.