The ground motion table provides specific information about IMs for each event across stations with recorded data. IMs include peak-ground-acceleration (PGA), peak-ground-velocity (PGV), and the pseudo-spectral-accelerations at vibration periods ranging from T = 0-10 s. When possible, ground motions are classified with a quality score from 0-1 for each record (as long as it is part of a 3-component seismogram). This is achieved via the ground-motion classifier neural network (GMC), developed by Dupuis et al. (2020). This catalogue is split into several tables, which depend on the component (000, 090, ver, rotD50, and rotD100). The columns listed here are for the flat-file version of the GMIM tables.
gmid | Ground motion identification number.
evid | Event identification number.
net, sta, loc | Network, location (number associated to different instruments at a site/station), and station name.
ev_lat, ev_lon, ev_depth, mag, mag_type, tect_type | Event latitude, longitude, depth (km), magnitude, magnitude type, and tectonic type.
domain_no | Tectonic domain in which the earthquake ruptured. Each number corresponds with a tectonic domain (see earthquake source table information)
domain_type | Type or rupture expected in the tectonic domain, can be: Extensional, Contractional, Strike-slip, or null.
relocated | Whether the associated event has been relocated (yes or no).
Rrup, Rjb | Shortest distance to the rupture plane and Joyner-Boore distance, the shortest distance to the surface projection of a rupture plane (in km). These are roughly equivalent to r_hyp and r_epi, respectively.
Ztor | Depth to the top of the rupture (in km).
Vs30_preferred | 30-m averaged shear-wave velocity (m/s).
Vs30_preferred_model | Preferred Vs30 model.
Tsite | Fundamental site periods (s).
Z1.0, Z2.5 | Depths (in km) to shear-wave velocities of 1.0 and 2.5 km/s, respectively.
Z1.0_NZVM, Z2.5_NZVM | Depths (in km) from the NZVM to shear-wave velocities of 1.0 and 2.5 km/s, respectively.
TVZ | Indicates whether a site is within the Taupo volcanic zone (0 = No, 1 = Yes)
PGA, PGV | Peak ground acceleration (g) and velocity (cm/s).
SA(T) | Pseudo-acceleration response spectra (spectral acceleration, g) for various periods, T.
CAV, AI | Cumulative absolute velocity (g*s) and Arias intensity (m/s).
Ds575, Ds595 | Significant duration (s) for different energy thresholds (5-75% and 5-95%).
score_X, score_Y, score_Z | Classification score (generally from 0-1) on the quality of the GM for X, Y, and Z channels.
f_min_X, f_min_Y, f_min_Z | Minimum viable frequency (Hz) of the GM for the X, Y, and Z components.