Repeating earthquakes provide a novel way of monitoring how stresses load faults between large earthquakes. To date, however, and despite the availability of long‐duration, high‐quality seismological datasets, little attention has been paid to tectonic repeating earthquakes in New Zealand. We develop a workflow and composite criterion for identifying repeating earthquakes in New Zealand, using data from the GeoNet permanent seismic network, and present New Zealand’s first decadal‐scale repeating earthquake catalog. For events to be identified as repeating in this study, two or more events must have a normalized cross‐correlation of at least 0.95 at two or more seismic stations, when calculated for 75% of the earthquake coda. By applying our composite criterion to seismicity around the Raukumara Peninsula, northern Hikurangi subduction margin, we have identified 61 repeating earthquake families occurring between 2003 and 2020, consisting of 347 individual earthquakes. These families have a magnitude range of M_L 1.7–5.2 and recurrence intervals of < 1 to ∼7 yrs. Repeating earthquakes in 9 of the 11 regional groups identified in this study coincide spatiotemporally with previously identified slow‐slip events and tremor. However, the responses shown to slow‐slip are not consistent within families or within regional groups.

中文翻译：

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新西兰北部Hikurangi俯冲带的Raukumara半岛从2003年到2020年的重复地震目录

重复地震提供了一种监视大地震之间应力加载断层应力的新颖方法。然而，迄今为止，尽管可获得长期，高质量的地震数据集，但对新西兰的构造重复地震却鲜有关注。我们使用GeoNet永久地震网络中的数据，开发了用于识别新西兰重复地震的工作流程和综合标准，并提出了新西兰第一个十年级重复地震目录。对于在本研究中被确定为重复的事件，两个或多个事件在两个或多个地震台站的标准化互相关必须至少为0.95（以地震尾声的75％计算）。通过将我们的综合判据应用于劳库马拉半岛周围北部库库朗伊俯冲带边缘的地震活动，我们确定了2003年至2020年之间发生的61个重复地震家庭，其中包括347次独立地震。这些家庭的震级范围为M _L  1.7–5.2，复发间隔<1至〜7年。在这项研究中确定的11个地区组中有9个地区的重复地震在时空上与先前确定的慢滑事件和震颤相吻合。但是，在家庭内部或在区域群体内部，对慢速滑行的反应并不总是一致的。