研究目的
To provide a comprehensive review of the proxies developed for two risk elements typically associated with pre-disaster situations (vulnerability and resilience), and two post-disaster elements (damage and recovery), while focusing on urban DRM.
研究成果
This article surveyed recent advances in the development of RS-based proxies for urban DRM, focusing on the literature for both pre- and post-disaster situation assessments. The structured review of 114 published articles shows that a comprehensive toolkit of RS-proxies has been developed and it is widely used in practice. We observed an increasing use in the number of proxy-based studies in urban DRM. Despite significant progress, there are gaps evident in the field that demand further research to focus on a number of directions.
研究不足
The current DRM literature suggests several proxies that are, at times, unreliable. For example, the presence of vehicles has been used to evaluate the accessibility of the roads. However, the metric is highly dependent on the image acquisition date and time, and other legal or environmental parameters that affect the presence of vehicles. Finally, need to go beyond the physical side towards functional assessments is prominent. Yet, few proxies have been developed for social, economic, and functional assessments in urban DRM.