Fig. 6: Double-couple component of the seismic moment tensors in the GCMT catalogue for 5.3 ≤ Mw ≤ 7.0 shallow (depth lower than 50 km) thrust-faulting (30° ≤ rake angle ≤ 150°) events (1990–2021).
From: The impact of faulting complexity and type on earthquake rupture dynamics
The maximum magnitude is limited such that the mean values of magnitudes of the sets of intraplate and interplate events are not statistically different. This choice is needed to avoid a bias in the estimation of average DC values since subduction events reach larger magnitudes than intraplate thrust-faulting events. Intraplate thrusting events (green points, a) are analysed separately from subduction earthquakes (red points, a). Error bars stand for 2σ. Seismic events are selected within the regions highlighted in the map, intraplate earthquakes are those inside the green contours, while interplate are within the red ones (b). Thrust-faulting intraplate earthquakes show lower DC components than the events occurring along the subduction zones.
