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| Titel |
A simple metric to quantify seismicity clustering |
| VerfasserIn |
N. F. Cho, K. F. Tiampo, S. D. Mckinnon, J. A. Vallejos, W. Klein, R. Dominguez |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 17, no. 4 ; Nr. 17, no. 4 (2010-07-02), S.293-302 |
| Datensatznummer |
250013700
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| Publikation (Nr.) |
 copernicus.org/npg-17-293-2010.pdf |
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| Zusammenfassung |
| The Thirulamai-Mountain (TM) metric was first developed to study ergodicity
in fluids and glasses (Thirumalai
and Mountain, 1993) using the concept of effective ergodicity,
where a large but finite time interval is considered. Tiampo et al. (2007) employed
the TM metric to earthquake systems to search for effective ergodic periods,
which are considered to be metastable equilibrium states that are disrupted
by large events. The physical meaning of the TM metric for seismicity is
addressed here in terms of the clustering of earthquakes in both time and
space for different sets of data. It is shown that the TM metric is highly
dependent not only on spatial/temporal seismicity clustering, but on the past
seismic activity of the region and the time intervals considered as well, and
that saturation occurs over time, resulting in a lower sensitivity to local
clustering. These results confirm that the TM metric can be used to quantify
seismicity clustering from both spatial and temporal perspectives, in which
the disruption of effective ergodic periods are caused by the agglomeration
of events. |
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