As part of the 2022 revision of the Aotearoa New Zealand National Seismic Hazard Model (NZ NSHM 2022), deformation models were constructed for the upper plate faults and subduction interfaces that impact ground‐shaking hazard in New Zealand. These models provide the locations, geometries, and slip rates of the earthquake‐producing faults in the NZ NSHM 2022. For upper plate faults, two deformation models were developed: a geologic model derived directly from the fault geometries and geologic slip rates in the NZ Community Fault Model version 1.0 (NZ CFM v.1.0); and a geodetic model that uses the same faults and fault geometries and derives fault slip‐deficit rates by inverting geodetic strain rates for back slip on those specified faults. The two upper plate deformation models have similar total moment rates, but the geodetic model has higher slip rates on low‐slip‐rate faults, and the geologic model has higher slip rates on higher‐slip‐rate faults. Two deformation models are developed for the Hikurangi–Kermadec subduction interface. The Hikurangi–Kermadec geometry is a linear blend of the previously published interface models. Slip‐deficit rates on the Hikurangi portion of the deformation model are updated from the previously published block models, and two end member models are developed to represent the alternate hypotheses that the interface is either frictionally locked or creeping at the trench. The locking state in the Kermadec portion is less well constrained, and a single slip‐deficit rate model is developed based on plate convergence rate and coupling considerations. This single Kermadec realization is blended with each of the two Hikurangi slip‐deficit rate models to yield two overall Hikurangi–Kermadec deformation models. The Puysegur subduction interface deformation model is based on geometry taken directly from the NZ CFM v.1.0, and a slip‐deficit rate derived from published geodetic plate convergence rate and interface coupling estimates.

中文翻译：

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新西兰国家地震灾害模型 2022 年修订中的上板块和俯冲界面变形模型

作为新西兰国家地震灾害模型 (NZ NSHM 2022) 2022 年修订的一部分，针对影响新西兰地面震动灾害的上板块断层和俯冲界面构建了变形模型。这些模型提供了 NZ NSHM 2022 中发生地震的断层的位置、几何形状和滑动率。对于上部板块断层，开发了两种变形模型：直接从 NZ 中的断层几何形状和地质滑动率导出的地质模型社区故障模型版本1.0（NZ CFM v.1.0）；以及一个大地测量模型，该模型使用相同的断层和断层几何形状，并通过反演这些指定断层上的回滑的大地测量应变率来导出断层滑动缺陷率。两个上部板块变形模型具有相似的总矩速率，但大地测量模型在低滑移率断层上具有较高的滑移率，而地质模型在高滑移率断层上具有较高的滑移率。针对 Hikurangi-Kermadec 俯冲界面开发了两种变形模型。Hikurangi-Kermadec 几何是之前发布的界面模型的线性混合。变形模型 Hikurangi 部分的滑移缺失率根据之前发布的块体模型进行了更新，并开发了两个端元模型来表示界面在沟槽处摩擦锁定或蠕变的替代假设。克马德克部分的锁定状态受到的约束较差，并且基于板块收敛速度和耦合考虑开发了单一滑差率模型。这个单一的 Kermadec 实现与两个 Hikurangi 滑动赤字率模型中的每一个混合，产生两个整体 Hikurangi-Kermadec 变形模型。Puysegur 俯冲界面变形模型基于直接取自 NZ CFM v.1.0 的几何形状，以及从已发布的大地板块收敛速度和界面耦合估计得出的滑移缺陷率。