Significant duration of strong shaking quantifies the length of time during which strong earthquake-induced shaking occurs at a given site. Significant duration has multiple applications in Geotechnical and Structural Engineering. However, while multiple ground motion prediction (GMPE) equations for duration exist for shallow crustal tectonic environments, at the time of this publication, there are few published models for predicting significant duration of subduction earthquakes. To address this need and to identify the difference between significant duration of motions resulting from earthquakes in different tectonic regimes, we develop predictive equations for significant duration applicable to interface and intraslab subduction earthquakes and shallow crustal earthquakes in active tectonic regimes using the KiK-net ground motion database. The GMPEs are applicable to earthquakes with M4 to 9. In addition, the influence of earthquake magnitude on duration due to path effects is captured in the proposed relationships. Based on the relationships proposed in this study, we note that the duration of ground motions from subduction earthquakes is longer than those of shallow crustal earthquakes that have similar magnitudes and distances. The predictions of duration for shallow crustal earthquakes in active tectonic regimes developed in this study are consistent with those from previous studies.

强烈震动的持续时间量化了在给定地点发生地震引起的震动的时间长度。相当长的时间在岩土和结构工程中有多种应用。但是，尽管在浅地壳构造环境中存在持续时间的多个地面运动预测（GMPE）方程，但在本出版物发布时，很少有已发布的模型来预测俯冲地震的持续时间。为了解决这一需求并确定不同构造状态下的地震导致的显着运动持续时间之间的差异，我们使用KiK-net地面模型开发了适用于活动构造条件下的界面和板内俯冲地震以及浅地壳地震的显着持续时间的预测方程式运动数据库。M 4至9。此外，在建议的关系中还记录了地震强度对路径效应引起的持续时间的影响。根据本研究提出的关系，我们注意到俯冲地震的地震动持续时间比震级和距离相似的浅地壳地震的持续时间更长。在这项研究中开发的活跃构造区域中浅层地壳地震持续时间的预测与以前的研究一致。