Hutchinson J, Bradley BA, Lee RL, Wotherspoon LM, Dupuis M, Schill C, Motha J, Kaiser AE, Manea EF. 2022. 2021 New Zealand Ground-Motion Database. Lower Hutt (NZ): GNS Science. 45 p. (GNS Science report; 2021/56). doi:10.21420/Z20E-5507.
Abstract
This report summarises the development of the 2021 New Zealand ground-motion database. Ground-motion intensity measures have been computed from strong-motion recordings for events with moment (and moment-equivalent) magnitudes equal to or greater than 4.0 from the year 2000 until the end of 2020. These measures include peak ground acceleration, peak ground velocity, cumulative absolute velocity, Arias intensity and pseudo-acceleration response spectra, among others. Along with these intensity measures, we have determined and/or collated earthquake rupture properties, re-computed earthquake magnitudes, event tectonic classifications, propagation path and near-surface site effects information. This information is compiled in several relational tables that comprise the entirety of the database, including a ‘flat file’ format with all intensity measures, along with key metadata such as source-to-site distances, hypocentral locations, magnitudes, site classification information and tectonic classifications. (The authors)
