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| Titel |
Record-breaking earthquake intervals in a global catalogue and an aftershock sequence |
| VerfasserIn |
M. R. Yoder, D. L. Turcotte, J. B. Rundle |
| 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. 2 ; Nr. 17, no. 2 (2010-03-31), S.169-176 |
| Datensatznummer |
250013661
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| Publikation (Nr.) |
 copernicus.org/npg-17-169-2010.pdf |
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| Zusammenfassung |
| For the purposes of this study, an interval is the elapsed time
between two earthquakes in a designated region; the minimum
magnitude for the earthquakes is prescribed. A record-breaking
interval is one that is longer (or shorter) than preceding
intervals; a starting time must be specified. We consider global
earthquakes with magnitudes greater than 5.5 and show that the
record-breaking intervals are well estimated by a Poissonian
(random) theory. We also consider the aftershocks of the 2004
Parkfield earthquake and show that the record-breaking intervals are
approximated by very different statistics. In both cases, we
calculate the number of record-breaking intervals (nrb) and
the record-breaking interval durations Δtrb as a
function of "natural time", the number of elapsed events. We also
calculate the ratio of record-breaking long intervals to
record-breaking short intervals as a function of time, r(t), which
is suggested to be sensitive to trends in noisy time series data.
Our data indicate a possible precursory signal to large earthquakes
that is consistent with accelerated moment release (AMR) theory. |
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