neic-supershear-analysis
NEIC Supershear Analysis
This software evalutes potential supershear ruptures by attempting to detect a Rayleigh Mach wave. It follows the work of Valle and Dunham (2012):
Vallée, M., and E. M. Dunham (2012), Observation of far-field Mach waves generated by the 2001 Kokoxili supershear earthquake, Geophys. Res. Lett., 39, L05311, doi:10.1029/2011GL050725.
Long-period observations of Rayleigh surface waves from potential supershear rupture are cross-correlated with earthquakes in the supershear region. Waveforms where there is high correlation between the mainshock and aftershocks suggest the presence of a Mach wave. Effectively, in the supershear region, the source of the mainshock is compacted to match that of a point source.
A unique part of this software is it allows for processing multiple subevents at once. It computes results for each single subevents, and results that take the median cross-correlation value at a station for all subevents.
Citation Information
| Publication Year | 2025 |
|---|---|
| Title | neic-supershear-analysis |
| DOI | 10.5066/P1BQPVIV |
| Authors | William L Yeck |
| Product Type | Software Release |
| Record Source | USGS Asset Identifier Service (AIS) |
| USGS Organization | Geologic Hazards Science Center |
| Rights | This work is marked with CC0 1.0 Universal |