Indonesia is one of the most seismically active countries in the world, and its large, vulnerable population makes reliable seismic hazard assessment an urgent priority. In 2016, the Indonesian Ministry of Public Works and Housing established a team of earthquake scientists and engineers tasked with improving the input data available for revising the national seismic hazard map. They compiled results of recent active fault studies using geological, geophysical, and geodetic observations, as well as a new comprehensive earthquake catalog including hypocenters relocated in a three-dimensional velocity model. Seismic hazard analysis was undertaken using recently developed ground motion prediction equations (GMPEs), and logic trees for the inclusion of epistemic uncertainty associated with different choices for GMPEs and earthquake recurrence models. The new seismic hazard maps establish the importance of active faults and intraslab seismicity, as well as the subduction megathrust, in determining the level of seismic hazard, especially in onshore, populated areas. The new Indonesian hazard maps will be used to update national standards for design of earthquake-resilient buildings and infrastructure.

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印度尼西亚 2017 年国家地震危险图的开发

印度尼西亚是世界上地震最活跃的国家之一，其庞大而脆弱的人口使得可靠的地震灾害评估成为当务之急。2016 年，印度尼西亚公共工程和住房部成立了一个由地震科学家和工程师组成的团队，负责改进​​可用于修订国家地震危险图的输入数据。他们使用地质、地球物理和大地测量观测以及包括在三维速度模型中重新定位的震源在内的新的综合地震目录汇编了最近的活动断层研究结果。使用最近开发的地面运动预测方程 (GMPE) 和逻辑树进行地震危害分析，以包含与 GMPE 和地震复发模型的不同选择相关的认知不确定性。新的地震危险图确定了活动断层和板内地震活动以及俯冲巨型逆冲断层在确定地震危险程度方面的重要性，尤其是在陆上人口稠密地区。新的印度尼西亚灾害地图将用于更新抗震建筑和基础设施设计的国家标准。