Despite recognition of the relationship between infrastructure resilience and community recovery, very limited empirical evidence exists regarding the extent to which the disruptions in and restoration of infrastructure services contribute to the speed of community recovery. To address this gap, this study investigates the relationship between community and infrastructure systems in the context of hurricane impacts, focusing on the recovery dynamics of population activity and power infrastructure restoration. Empirical observational data were utilized to analyze the extent of impact, recovery duration, and recovery types of both systems in the aftermath of Hurricane Ida. The study reveals three key findings. First, power outage duration positively correlates with outage extent until a certain impact threshold is reached. Beyond this threshold, restoration time remains relatively stable regardless of outage magnitude. This finding underscores the need to strengthen power infrastructure, particularly in extreme weather conditions, to minimize outage restoration time. Second, power was fully restored in 70\% of affected areas before population activity levels normalized. This finding suggests the role infrastructure functionality plays in post-disaster community recovery. Interestingly, quicker power restoration did not equate to rapid population activity recovery due to other possible factors such as transportation, housing damage, and business interruptions. Finally, if power outages last beyond two weeks, community activity resumes before complete power restoration, indicating adaptability in prolonged outage scenarios. This implies the capacity of communities to adapt to ongoing power outages and continue daily life activities...
翻译:尽管基础设施韧性与社区恢复之间的关系已获认可,但关于基础设施服务中断与恢复对社区恢复速度影响程度的实证研究仍极为有限。为填补这一空白,本研究聚焦飓风影响下社区与基础设施系统的恢复动态,特别是人口活动恢复与电力基础设施修复之间的关联。利用实证观测数据,分析了飓风"艾达"过后两个系统的影响程度、恢复时长及恢复类型。研究揭示了三个关键发现。首先,停电持续时间与停电范围呈正相关,直至达到特定影响阈值。超过该阈值后,无论停电规模如何,修复时间均保持相对稳定。这一发现凸显了加强电力基础设施建设的必要性,特别是在极端天气条件下,以最大限度缩短停电修复时间。其次,在70%受影响地区,电力完全恢复的时间早于人口活动水平恢复正常。这表明基础设施功能在灾后社区恢复中发挥着重要作用。值得注意的是,更快的电力恢复并未直接转化为人口活动的快速恢复,可能是由于交通、住房损毁及商业中断等其他因素所致。最后,若停电持续超过两周,社区活动将在电力完全恢复前恢复,揭示了长期停电情境下的适应性机制。这表明社区具备适应持续停电并维持日常生活活动的能力...