| 汶川8.0级和仲巴6.8级地震中波红外热辐射异常 |
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| 关键词:earthquake wavelet transform power spectrum thermal anomaly |
| 基金项目:中央级基本科研业务专项(编号: 2011IESLZ06);高分辨对地观测重大专项(编号: E0311/1112/JD3-1) |
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| Medium Wave Infrared Brightness Anomalies of Wenchuan 8.0 and Zhongba 6.8 Earthquakes |
| Based on the Medium Wave Infrared Brightness data of geostationary satellite, the authors applied wavelet transform and power spectrum estimation to an analytical study of thermal anomalies for Wenchuan 8.0 and Zhongba 6.8 earthquakes. The results indicate that short-term and impending thermal anomaly phenomena arose distinctly before the two earthquakes. The short-impending anomaly distributions of both earthquakes were basically consistent with the previous results of outgoing long-wave radiation and thermal infrared brightness temperature data studies. The obvious change of thermal anomaly before the two earthquakes in the time evolution has the short-term and impending significance of earthquake forecast prediction. The thermal anomalies of the two earthquakes might have reflected the changes in stress concentration and adjustment. The authors estimated the possible earthquake region according to the direction of abnormal evolution and the anomaly disappearance of the seismogenic zone. |
| GUO Xiao,ZHANG Yuan-sheng,WEI Cong-xin,ZHONG Mei-jiao,ZHANG Xuan.2014.Medium Wave Infrared Brightness Anomalies of Wenchuan 8.0 and Zhongba 6.8 Earthquakes[J].Acta Geoscientica Sinica,35(3):338-344. |
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