The interest to build a nuclear power plant in West Nusa Tenggara Province has caused a concern related to the seismic hazard. One of the challenges was that the existing low-resolution national seismic hazard map did not cover the entire islands of West Nusa Tenggara Province. In this paper, preliminary probabilistic seismic hazard analysis of West Nusa Tenggara was performed to complement the existing national seismic hazard map for West Nusa Tenggara. The analysis was carried out using OQ software based on the seismotectonic model and GMPE developed by PUSGEN. Similar seismotectonic model and seismic event trees were implemented using a finer grid spacing of 500–1000 m. The seismotectonic model included active shallow crustal, subduction interface, and background sources with a total number of 50 seismogenic sources and was calculated using 108 GMPE paths. Two hazard levels were considered, each representing 1% and 2% POE in a 100-year return period. A comparison to the existing national seismic hazard map on the PGA level has been presented in this study and yielded a 13–25% difference in the ground acceleration value. Spectral hazard maps representing the shorter period (0.2 s) showed a maximum ground acceleration value of more than 2 g, especially in the northern part of Sumbawa Island. Beyond the longer spectral period (1 s), ground acceleration gradually decreases to the level below the PGA level.

对在西努沙登加拉省建造核电站的兴趣引起了与地震危险有关的担忧。挑战之一是现有的低分辨率国家地震灾害图没有覆盖西努沙登加拉省的整个岛屿。本文对西努沙登加拉州进行了初步概率地震危险性分析，以补充西努沙登加拉州现有的国家地震灾害图。使用基于地震构造模型的OQ软件和PUSGEN开发的GMPE进行分析。使用500–1000 m的较细网格间距实现了类似的地震构造模型和地震事件树。地震构造模型包括活动浅地壳，俯冲界面，和背景源，总共有50个地震源，并使用108条GMPE路径进行了计算。考虑了两种危害等级，分别代表100年回报期内的POE分别为1％和2％。在这项研究中，已将其与现有的美国国家地震危险性地图在PGA级别上进行了比较，得出的地面加速度值相差13–25％。代表较短时间段（0.2 s）的光谱危险图显示最大地面加速度值超过2 g，尤其是在Sumbawa岛北部。除了较长的频谱周期（1 s），地面加速度逐渐降低到PGA级别以下的级别。在这项研究中，已将其与现有的美国国家地震危险性地图在PGA级别上进行了比较，得出的地面加速度值相差13–25％。代表较短时间段（0.2 s）的光谱危险图显示最大地面加速度值超过2 g，尤其是在Sumbawa岛北部。除了较长的频谱周期（1 s），地面加速度逐渐降低到低于PGA级别的水平。在这项研究中，已将其与现有的美国国家地震危险性地图在PGA级别上进行了比较，得出的地面加速度值相差13–25％。代表较短时间段（0.2 s）的光谱危险图显示最大地面加速度值超过2 g，尤其是在Sumbawa岛北部。除了较长的频谱周期（1 s），地面加速度逐渐降低到低于PGA级别的水平。