Fig. 2: Real-time Jerk signals for all Piton de la Fournaise eruptions from 2014 to 2023.
From: Jerk, a promising tool for early warning of volcanic eruptions
Jerk amplitude is shown for time windows (−10, +4 h) around the eruption. The vertical gray lines indicate the start time of the seismic swarm. Gray boxes indicate the eruption. For all Jerk signals, the red solid outlines stand for the parts above the alarm level threshold (0.1 nm s−3) and inside the azimuth interval. On the right, the Jerk signals are plotted as oriented particle motions (north up) within target circles of 0.5 nm s−3 radius.
