Artificial seismic acceleration
Nature Geoscience
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Abstract
In their 2013 paper, Bouchon, Durand, Marsan, Karabulut, 3 and Schmittbuhl (BDMKS) claim to see significant accelerating seismicity before M 6.5 interplate mainshocks, but not before intraplate mainshocks, reflecting a preparatory process before large events. We concur with the finding of BDMKS that their interplate dataset has significantly more fore- shocks than their intraplate dataset; however, we disagree that the foreshocks are predictive of large events in particular. Acceleration in stacked foreshock sequences has been seen before and has been explained by the cascade model, in which earthquakes occasionally trigger aftershocks larger than themselves4. In this model, the time lags between the smaller mainshocks and larger aftershocks follow the inverse power law common to all aftershock sequences, creating an apparent acceleration when stacked (see Supplementary Information).
Suggested Citation
Felzer, K.R., Page, M.T., Michael, A.J., 2015, Artificial seismic acceleration: Nature Geoscience, v. 8, p. 82-83, https://doi.org/10.1038/ngeo2358.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Artificial seismic acceleration |
| Series title | Nature Geoscience |
| DOI | 10.1038/ngeo2358 |
| Volume | 8 |
| Publication Date | February 03, 2015 |
| Year Published | 2015 |
| Language | English |
| Publisher | Nature Publishing Group |
| Contributing office(s) | Earthquake Science Center |
| Description | 2 p. |
| First page | 82 |
| Last page | 83 |