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| Titel |
Thermal infrared brightness temperature anomalies associated with the Yushu (China) Ms = 7.1 earthquake on 14 April 2010 |
| VerfasserIn |
T. Xie, C. L. Kang, W. Y. Ma |
| 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. 4 ; Nr. 13, no. 4 (2013-04-24), S.1105-1111 |
| Datensatznummer |
250018418
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| Publikation (Nr.) |
 copernicus.org/nhess-13-1105-2013.pdf |
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| Zusammenfassung |
| The paper presents a wavelet transform method to identify possible seismic
brightness temperature anomalies that might be associated with the Yushu
(Ms = 7.1) earthquake that occurred in Qinghai province of China
on 14 April 2010. Daily infrared data from the Chinese geostationary
meteorological satellite FY-2E were used for the period from 1 January 2010
to 31 December 2011 and the spatial region 28.1–38.1° N by
91.7–101.7° E. We find that the wavelet transform is an effective
method to analyse time series which contain nonstationary power, and identify
here anomalous power both in the time and frequency domain. The results show
that, over the two years, the relative wavelet power spectrum (RWPS) showed
anomalous RWPS variations in nine cases: two of these were followed by
earthquakes; seven were not. One of the two RWPS anomalies that were followed
by an earthquake was in the southern area of the epicentre of the Yushu
earthquake, with the RWPS anomaly starting to appear around 29 March 2010,
decreasing in the period before the earthquake, and completely gone by
14 April 2010. The Yushu earthquake was the only strong earthquake within the
region and two-year time period chosen, so the abnormal change of RWPS during
this time period was possibly associated with the Yushu earthquake. |
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