...Chris Rollins; Matthew C. Gerstenberger; David A. Rhoades; Sepideh J. Rastin; Annemarie Christophersen; Kiran Kumar S. Thingbaijam; Russell J. Van Dissen; Kenny Graham; Chris DiCaprio; Jeff Fraser ABSTRACT Using a new integrated earthquake catalog for Aotearoa New Zealand (described in a companion...

... account for fault segmentation (Valentini et al. , 2020 ; Goda and Sharipov, 2021 ; Williams et al. , 2023). This study aims to compare and evaluate a range of SRMs for the low‐strain‐rate Otago region in the South Island of Aotearoa, New Zealand. We first compare three fault‐based SRMs that all...

..., their affordability allows for the creation of dense sensor networks, enhancing the system’s overall detection capability. Aotearoa New Zealand (NZ) faces significant seismic risks, recording an average of 15,000 earthquakes annually, including 150 strong enough to be felt ( GeoNet, 2023 ). Efforts...

...Chris Rollins; Annemarie Christophersen; Kiran Kumar S. Thingbaijam; Matthew C. Gerstenberger; Jesse Hutchinson; Donna Eberhart‐Phillips; Stephen Bannister; Russell J. Van Dissen; Hannu Seebeck; Susan Ellis ABSTRACT We compile an integrated earthquake catalog for Aotearoa New Zealand (NZ...

... modeling. We investigate the spatial and temporal clustering of earthquakes in the last 5500 yr on upper‐plate faults (Wairarapa, Wellington, and Ōhāriu) and the subduction interface in the southern Hikurangi margin in Aotearoa‐New Zealand. We recalibrated radiocarbon ages and reinterpreted some earthquake...

... knowledge of how the transition from subduction to oblique continental collision is manifest in central Aotearoa New Zealand. The 3-D architecture of the Marlborough transfer zone and associated Marlborough Fault System between the Hikurangi subduction margin and the Alpine Fault is poorly understood. We...

... and compared that to the observed number on each day. This figure aimed to highlight to the public that the sequence was decaying as expected. Aotearoa New Zealand sits on the boundary of the Australian and Pacific plates and experiences many natural hazards, including earthquakes (Fig.  1 ). GNS Science...

...Katherine L. Maier; Lorna J. Strachan; Stephanie Tickle; Alan R. Orpin; Scott D. Nodder; Jamie Howarth ABSTRACT The 2016 M w 7.8 Kaikōura Earthquake in Aotearoa New Zealand provides an opportunity to test widely applied turbidite sedimentation models because it triggered a co-seismic turbidity...

... records in Aotearoa New Zealand. We find that the elapsed time since the last earthquake is less than the mean recurrence interval for the majority (∼70%–80%) of the >50 faults sampled. Calculated mean recurrence intervals using slip per event and slip rate for these faults do not indicate systematic...

... A. Bourguignon S. Rhoades D. Allen T. Ristau J. Salichon J. Rollins C. Townend J. , and Gerstenberger M. 2024 . Standardizing earthquake magnitudes for the 2022 revision of the Aotearoa New Zealand National Seismic Hazard Model , Bull. Seismol. Soc. Am. doi: 10.1785/0120230169...

.... The impact of these forecasts in the hazard space is investigated by implementing a negative‐binomial formulation in the OpenQuake hazard software suite, which is adopted by the 2022 Aotearoa New Zealand National Seismic Hazard Model. For a 10% exceedance probability of peak ground acceleration (PGA) in 50...

...; Jeremy Maurer; Mark S. Rattenbury; John Ristau; Danijel Schorlemmer; John Townend; Pilar Villamor; Charles Williams ABSTRACT A seismicity rate model (SRM) has been developed as part of the 2022 Aotearoa New Zealand National Seismic Hazard Model revision. The SRM consists of many component models, each...

... revision of Aotearoa New Zealand National Seismic Hazard Model (NZ NSHM 2022) has involved significant revision of all datasets and model components. In this article, we present a subset of many results from the model as well as an overview of the governance, scientific, and review processes followed...

...Annemarie Christophersen; Sandra Bourguignon; David A. Rhoades; Trevor I. Allen; John Ristau; Jerome Salichon; John Christopher Rollins; John Townend; Matthew C. Gerstenberger ABSTRACT The 2022 revision of the New Zealand National Seismic Hazard Model—Te Tauira Matapae Pūmate Rū i Aotearoa—requires...

... hazard. We compare ground‐shaking hazard forecasts from the 2022 Aotearoa New Zealand National Seismic Hazard Model (NZ NSHM 2022), which incorporates many multifault ruptures (referred to as the multifault model) with modeled hazard from a simpler model of characteristic earthquakes on individual faults...

...Russ J. Van Dissen; Kaj M. Johnson; Hannu Seebeck; Laura M. Wallace; Chris Rollins; Jeremy Maurer; Matthew C. Gerstenberger; Charles A. Williams; Ian J. Hamling; Andrew Howell; Christopher J. DiCaprio ABSTRACT As part of the 2022 revision of the Aotearoa New Zealand National Seismic Hazard Model...

... >50% of recorded ( M w ≥ 4.0 events) earthquakes in Aotearoa New Zealand. Here, we develop a source model for intraslab seismicity using recently augmented datasets including models of subduction interface geometries, an earthquake catalog, and a regional moment tensor catalog. For the areal zones...

..., we present a model describing focal mechanisms, or more specifically, strike, dip, and rake angles, for the ruptures of shallow (hypocentral depth ≤40 km) crustal earthquakes in Aotearoa New Zealand. This model is based on delineations of neotectonic domains and analysis of pre‐existing datasets...

...Annemarie Christophersen; Matthew C. Gerstenberger Abstract The 2022 revision of the New Zealand National Seismic Hazard Model—Te Tauira Matapae Pūmate Rū i Aotearoa (NZ NSHM 2022) is, like other regional and national seismic hazard models, a collection of many component models that are combined...

... comparative case study of two cities: Christchurch, New Zealand (M w 6.2 earthquake, February 2011) and L’Aquila, Italy (M w 6.3 earthquake, 2009). Both cities suffered comprehensive damage to their city centers and had cordons established for extended periods of time. Data collection was done through...