Wang, Qi and Jackson, David D. and Zhuang, Jiancang (2010) Missing links in earthquake clustering models. Geophysical Research Letters, 37 (21). DOI: https://doi.org/10.1029/2010GL044858
Full text not available from this repository.Abstract
Many clustering models imply two kinds of earthquakes: spontaneous ones and those triggered by previous earth- quakes. The pair ‐ wise links from earlier to later earthquakes control the estimates of the clustering parameters. However, earthquake catalogs are limited in time, space, and magnitude, so that triggers of some cataloged earthquakes may be unknown. Thus some links are unrecognized and some trig- gered events appear spontaneous. Here we present a method for identifying such earthquakes and reducing the bias from missing links. We treat earthquakes probably affected by missing links as potential triggers, but we exclude them in evaluating modeled effects. We use an Epidemic ‐ type After- shock Sequence (ETAS) model to examine specifics. The most affected parameter is the proportion of spontaneous earth- quakes. The most important missing links apparently follow earthquakes below the magnitude threshold, before the start, and outside the spatial boundaries of the catalog, in that order.
| Item Type: | Article |
|---|---|
| Subjects: | Methodology > Method and procesing > Collective properties of seismicity > Clustering and migration |
| Project: | IS-EPOS project |