Papua New Guinea (PNG) lies in a belt of intense tectonic activity that experiences high levels of seismicity. Although this seismicity poses significant risks to society, the Building Code of PNG and its underpinning seismic loading requirements have not been revised since 1982. This study aims to partially address this gap by updating the seismic zoning map on which the earthquake loading component of the building code is based. We performed a new probabilistic seismic hazard assessment for PNG using the OpenQuake software developed by the Global Earthquake Model Foundation (Pagani et al. in Seism Res Lett 85(3):692–702, 2014). Among other enhancements, for the first time together with background sources, individual fault sources are implemented to represent active major and microplate boundaries in the region to better constrain the earthquake-rate and seismic-source models. The seismic-source model also models intraslab, Wadati–Benioff zone seismicity in a more realistic way using a continuous slab volume to constrain the finite ruptures of such events. The results suggest a high level of hazard in the coastal areas of the Huon Peninsula and the New Britain–Bougainville region, and a relatively low level of hazard in the southwestern part of mainland PNG. In comparison with the seismic zonation map in the current design standard, it can be noted that the spatial distribution of seismic hazard used for building design does not match the bedrock hazard distribution of this study. In particular, the high seismic hazard of the Huon Peninsula in the revised assessment is not captured in the current building code of PNG.

巴布亚新几内亚（PNG）处于强烈的构造活动带，其地震活动程度很高。尽管这种地震活动给社会带来了巨大的风险，但自1982年以来就没有对PNG的建筑规范及其基础地震荷载要求进行修订。本研究旨在通过更新建筑物的地震荷载分量所在的地震分区图来部分弥补这一差距。代码基于。我们使用由全球地震模型基金会开发的OpenQuake软件对PNG进行了新的概率地震危险评估（Pagani等人，在Seism Res Lett 85（3）：692-702，2014）。除其他增强功能外，还首次与背景资源一起使用，单独的断层震源被用来表示该地区活跃的主，微板边界，以更好地约束地震速率和震源模型。地震源模型还使用连续的板块体积来约束此类事件的有限破裂，以更实际的方式对板内Wadati–Benioff带地震活动进行建模。结果表明，休恩半岛沿岸地区和新不列颠－布干维尔地区的危害程度较高，而巴布亚新几内亚西南部的危害程度相对较低。与当前设计标准中的地震分区图相比，可以注意到，用于建筑设计的地震灾害的空间分布与本研究的基岩灾害分布不匹配。尤其是，