This study presents trigger design methods and performance evaluations of multi-hazard parametric catastrophe bonds for mega-thrust subduction earthquakes and tsunamis. The catastrophe bonds serve as alternative disaster risk financing tools for insurers and reinsurers as well as municipalities and governments. Two types of parametric catastrophe bond trigger are investigated. A scenario-based method utilizes available earthquake source-based information, such as magnitude and location, whereas a station-intensity-based method can be implemented when seismic and tsunami hazard monitoring systems are in place in a region. The case study results, focusing on wooden buildings in Miyagi Prefecture, indicate that the station-intensity-based trigger methods outperform the scenario-based trigger methods significantly. Incorporating seismic and tsunami hazard information from multiple recording stations results in smaller trigger errors. The station-intensity-based methods are applicable to building portfolios at both municipality levels and regional levels.

这项研究提出了针对特大推力俯冲地震和海啸的多危险参数巨灾债券的触发设计方法和性能评估。巨灾债券可作为保险公司和再保险公司以及市政当局和政府的替代灾难风险融资工具。研究了两种类型的参数化巨灾债券触发。基于场景的方法利用了可用的基于地震源的信息，例如震级和位置，而当在某个地区安装了地震和海啸危害监测系统时，可以实施基于站台强度的方法。案例研究结果以宫城县的木制建筑物为中心，表明基于站强度的触发方法明显优于基于情景的触发方法。合并来自多个记录站的地震和海啸危害信息可减少触发误差。基于车站强度的方法适用于市政级别和区域级别的建筑组合。