Research Article
Towards Automated Real-Time Detection and Location of Large-Scale Landslides through Seismic Waveform Back Projection
Figure 5
An example of the seismic data preprocessing (section 3.1) and the landslide detection (section 3.2) stages. (a) 3-component raw recordings are cut into 70-minute-long segments with 10-minute-long overlaps. (b) Waveforms bandpassed between 1 to 3 Hz. (c) The root mean square (RMS) of three-component bandpass-filtered waveforms. (d) Envelopes obtained by normalizing using the maximum (black line) and by normalizing using the value at the 99th percentile (red line). (e) The stacking function obtained from envelopes normalized by the maximum. (f) The stacking function obtained from envelopes normalized by the value at the 99th percentile. Stars: a local earthquake (ML 3.6). Crosses: a landslide event detected by our algorithm.
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