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Development and implications of an expanded national earthquake catalogue for New Zealand
(New Zealand Society for Earthquake Engineering, 2021-04-14)
In the last two decades, New Zealand (NZ) has experienced significant earthquakes, including the 2010 M 7.2 Darfield, 2011 M 6.2 Christchurch, and 2016 M 7.8 Kaikōura events. Amongst these large events, tens of thousands ...
Ground motion simulation validation with explicit uncertainty incorporation for small magnitude earthquakes in New Zealand
(New Zealand Society for Earthquake Engineering, 2021-04-14)
This study investigates the uncertainty of simulated earthquake ground motions for small-magnitude events (Mw 3.5 – 5) in Canterbury, New Zealand. 148 events were simulated with specified uncertainties in: event magnitude, ...
Source modelling insights from ground motion simulation validation of moderate magnitude active shallow crustal earthquakes in New Zealand
(New Zealand Society for Earthquake Engineering, 2021-04-14)
Hybrid broadband ground motion simulation validation has been an ongoing effort in NZ with recent studies focussed on active shallow crustal earthquakes of large magnitude (Mw>7.0) and small magnitude (3.5<Mw≤5.0). Lessons ...
Wellington basin amplification: research goals and update from the National Seismic Hazard Model Programme
(New Zealand Society for Earthquake Engineering, 2021-04-14)
In Wellington, 3D basin amplification effects observed at 1 – 2 second spectral periods were identified as one factor likely to have exacerbated damage to mid-rise structures during the 2016 Mw 7.8 Kaikōura earthquake ...
Full Waveform Tomography for the upper South Island region, New Zealand
(New Zealand Society for Earthquake Engineering, 2021-04-14)
In this paper, we apply Full Waveform Tomography (FWT) based on the Adjoint-Wavefield (AW) method to iteratively invert an existing 3-D geophysical velocity model for the upper South Island region, New Zealand. Through the ...