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| Titel |
Precursory pattern of tidal triggering of earthquakes in six regions of China: the possible relation to the crustal heterogeneity |
| VerfasserIn |
Q. Li, G.-M. Xu |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1561-8633
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| Digitales Dokument |
URL |
| Erschienen |
In: Natural Hazards and Earth System Science ; 13, no. 10 ; Nr. 13, no. 10 (2013-10-18), S.2605-2618 |
| Datensatznummer |
250085537
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| Publikation (Nr.) |
 copernicus.org/nhess-13-2605-2013.pdf |
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| Zusammenfassung |
| We found the possible correlation between the precursory pattern of tidal
triggering of earthquakes and the crustal heterogeneities, which is of
particular importance to the researchers in earthquake prediction and
earthquake hazard prevention. We investigated the connection between the
tidal variations and earthquake occurrence in the Liyang, Wunansha,
Cangshan, Wenan, Luquan and Yaoan regions of China. Most of the regions show
a higher correlation with tidal triggering in several years preceding the
large or destructive earthquakes compared to other times, indicating that
the tidal triggering may inherently relate to the nucleation of the
destructive earthquakes during this time. In addition, the analysis results
indicate that the Liyang, Cangshan and Luquan regions, with stronger
heterogeneity, show statistically significant effects of tidal triggering
preceding the large or destructive earthquakes, while the Wunansha, Wenan
and Yaoan regions, with relatively weak heterogeneity, show statistically
insignificant effects of it, signifying that the precursory pattern of tidal
triggering of earthquakes in these six regions is possibly related to the
heterogeneities of the crustal rocks. The above results suggest that when
people try to find the potential earthquake hazardous areas or make
middle–long-term earthquake forecasting by means of precursory pattern of
the tidal triggering, the crustal heterogeneity in these areas has to be
taken into consideration for the purpose of increasing the prediction
efficiency. If they do not consider the influence of crustal heterogeneity
on the tidal triggering of earthquakes, the prediction efficiency might
greatly decrease. |
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