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Observing community resilience from space: Using nighttime lights to model economic disturbance and recovery pattern in natural disaster
Sustainable Cities and Society ( IF 11.7 ) Pub Date : 2020-02-26 , DOI: 10.1016/j.scs.2020.102115
Yi Qiang , Qingxu Huang , Jinwen Xu

A major challenge for measuring community resilience is the lack of empirical observations in disasters. As an effective tool to observe human activities on the earth surface, night-time light (NTL) remote sensing images can fill the gap of empirical data for measuring community resilience in natural disasters. This study introduces a quantitative framework to model recovery patterns of economic activity in a natural disaster using the Defense Meteorological Satellite Program-Operational Linescan System (DMSP-OLS) images. The utility of the framework is demonstrated in a retrospective study of Hurricane Katrina, which uncovered the great economic impact of Katrina and spatial variation of the disturbance and recovery pattern of economic activity. Environmental and socio-economic factors that potentially influence economic recovery were explored in statistical analyses. Instead of a static and holistic index, the framework measures resilience as a dynamic process. The analysis results provide actionable information for prompting resilience in diverse communities and in different phases of a disaster. In addition to Hurricane Katrina, the resilience modeling framework is applicable for other disaster types. The introduced approaches and findings increase our understanding about the complexity of community resilience and provide support for developing resilient and sustainable communities.



中文翻译:

从太空观察社区的复原力:使用夜间照明灯模拟自然灾害中的经济扰动和恢复模式

衡量社区抗灾力的一个主要挑战是在灾难中缺乏经验观察。作为观察地球表面人类活动的有效工具,夜间光(NTL)遥感图像可以填补用于测量自然灾害中社区复原力的经验数据的空白。这项研究引入了一种定量框架,可使用国防气象卫星计划-操作线扫描系统(DMSP-OLS)图像对自然灾害中经济活动的恢复模式进行建模。该框架的效用在对卡特里娜飓风的回顾研究中得到了证明,该研究揭示了卡特里娜飓风的巨大经济影响以及经济活动的干扰和恢复模式的空间变化。在统计分析中探讨了可能影响经济复苏的环境和社会经济因素。该框架不是动态的整体指标,而是静态的指标。分析结果提供了可操作的信息,以促进在不同社区和灾难的不同阶段进行恢复。除了卡特里娜飓风外,复原力建模框架还适用于其他灾难类型。引入的方法和发现增加了我们对社区弹性的复杂性的理解,并为发展弹性和可持续社区提供了支持。分析结果提供了可操作的信息,以促进在不同社区和灾难的不同阶段进行恢复。除了卡特里娜飓风外,复原力建模框架还适用于其他灾难类型。引入的方法和发现增加了我们对社区弹性的复杂性的理解,并为发展弹性和可持续社区提供了支持。分析结果提供了可操作的信息,以促进在不同社区和灾难的不同阶段进行恢复。除了卡特里娜飓风外,复原力建模框架还适用于其他灾难类型。引入的方法和发现增加了我们对社区弹性的复杂性的理解,并为发展弹性和可持续社区提供了支持。

更新日期:2020-02-26
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