2 Works
The Seismicity Rate Model for the 2022 New Zealand National Seismic Hazard Model
Matt C. Gerstenberger, Russ J. Van Dissen, Chris Rollins, Chris DiCaprio, Chris Chamberlain, Annemarie Christophersen, Genevieve L. Coffey, Susan M. Ellis, P. Iturrieta & Katelyn M. Johnson
This report summarises the Seismicity Rate Model (SRM) of the 2022 New Zealand National Seismic Hazard Model revision. The SRM is comprised of multiple component models that fall into one of two classes: (1) inversion fault model (IFM) or (2) distributed seismicity model (DSM). The full details of each component model are further detailed in reports specific to each component. The IFM uses an inversion-based method to model occurrence rates for hundreds of thousands of...
Geodetic deformation model for the 2022 update of the New Zealand National Seismic Hazard Model
Katelyn M Johnson, Laura M. Wallace, J. Maurer, Ian J. Hamling, Charles A. Williams, Chris Rollins, Matt C. Gerstenberger & Russ J. Van Dissen
In order to incorporate geodetic measurements of contemporary deformation into the 2022 revision of the New Zealand National Seismic Hazard Model (NSHM), we develop strain rate and fault slip deficit rate models derived from New Zealand’s interseismic Global Navigation Satellite Systems (GNSS)-derived velocity field. Four strain-rate maps, derived from different methodologies, underpin elastic deformation models that are based on inversions of strain rate for slip deficit rates on the suite of faults being used in...