A Repeating Earthquake Catalog From 2003 to 2020 for the Raukumara Peninsula, Northern Hikurangi Subduction Margin, New Zealand

Abstract

Monitoring and interpreting how stresses load faults in the run-up to large earthquakes, and what impact this has on nucleation and rupture processes, remains a significant challenge in earthquake physics (e.g., Passelègue et al., 2020). Repeating earthquakes provide one means of monitoring these processes within the seismogenic portions of faults (Uchida, Matsuzawa, Hasegawa, et al., 2003). In New Zealand, little attention has been paid to repeating earthquakes, despite the availability of high-quality, long-duration seismological datasets. In this paper, we describe the construction and analysis of the first decadal-scale (17 yr) catalog of repeating earthquakes of tectonic origin in New Zealand. Repeating EarthquakesRepeating earthquakes are identified primarily on the basis of their highly similar waveforms, observed at multiple stations, which imply similar hypocenters and focal mechanisms (e.g.

A review on slow earthquakes in the Japan Trench

“…There have been many similar attempts to infer the occurrence of SSEs using repeating earthquakes (e.g., Nadeau and McEvilly 2004;Bouchon et al 2011;Kato et al 2014;Uchida et al 2016;Rolandone et al 2018;Nishikawa and Ide 2018). Furthermore, several studies compared geodetically detected SSEs and repeating earthquake activity in detail and found a good correspondence between them (e.g., Shaddox and Schwartz 2019;Uchida et al 2020;Hughes et al 2021;Okada et al 2022). Readers interested in repeating earthquakes can refer to review papers by Uchida (2019) and Uchida and Bürgmann (2019) for more information.…”

Interplate Slip Rate Variation Between Closely Spaced Earthquakes in Southern Mexico: The 2012 Ometepec and 2018 Pinotepa Nacional Thrust Events

“…REs are therefore considered the result of asperities that systematically accumulate and release stress with a similar moment magnitude in an otherwise aseismic slipping area. This process has been reported in a wide variety of tectonic environments such as oceanic fracture zones ( Materna et al, 2018 ), transform faults ( Nadeau & McEvilly, 1999, 2004Uchida et al, 2019;Vidale et al, 1994 ), volcanoes ( Tepp, 2018 ), and subduction zones ( Chaves et al, 2020;Hughes et al, 2021;Mavrommatis et al, 2015;Uchida et al, 2015 ). Monitoring REs thus allows the estimation of the interplate aseismic slip as well as examining changes in the mechanical properties of the fault system.…”

Development of an Epidemic‐Type Aftershock‐Sequence Model Explicitly Incorporating the Seismicity‐Triggering Effects of Slow Slip Events

“…GeoNet (https://www.geonet.org.nz) routinely archives earthquakes around New Zealand. We extracted the earthquakes regardless of their source depths, because previous studies have shown that not only interplate seismicity but also intraslab and upper‐plate seismicity are associated with SSEs on the plate interface of the Hikurangi Trench (Hughes et al., 2021; Jacobs et al., 2016; Nishikawa et al., 2021; Shaddox & Schwartz, 2019; Warren‐Smith et al., 2019; Yarce et al., 2019).…”