| 川滇块体中强震前热红外辐射异常研究 |
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| 关键词:Chuan–Dian rhombic block earthquake MODIS thermal infrared radiation |
| 基金项目:中国地震局地震预测研究所项目(编号: 31-Y30B09-9001-13/15); 四川省地震局地震科技专项(编号: LY1610) |
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| Anomalies of Thermal Infrared Radiation before Some Medium to Large Earthquakes in the Chuan–Dian (Sichuan–Yunnan) Rhombic Block |
| The Chuan–Dian rhombic block where medium to large earthquakes occurred frequently is the hotspot of studying earthquake precursors. The existence of thermal infrared radiation anomalies before strong earthquakes has been confirmed by many earthquakes. For in-depth study and application of thermal infrared radiation in the Chuan–Dian rhombic block, a systematic research on thermal infrared radiation anomalies before strong earthquakes in this area is necessary. In this paper, on the basis of many years’ Moderate Resolution Imaging Spectroradiometer (MODIS) data of infrared brightness temperature determined through satellite remote sensing, the authors analyzed low frequency information of average brightness temperature before M≥5.0 earthquakes from April 2004 to August 2014 in the Chuan–Dian rhombic block. The following results were obtained: (1) In the Chuan–Dian rhombic block, the satellite did not observe a large area of significant thermal infrared radiation anomalies before M≤6.1 earthquakes, which could help to predict the magnitude of earthquake after the appearance of such radiation anomalies; (2) A large area of significant thermal infrared radiation anomalies appeared before the August 3, 2014, Ludian M6.5 earthquake. Such anomaly was a short-term earthquake precursor, which had the significance of indicating the earthquake of magnitude M6.5 or so in the Chuan–Dian rhombic block. |
| ZHANG Tie-bao,LU Qian,GAO Yang,QI Yu-ping,XIN Hua,LIU Fang.2016.Anomalies of Thermal Infrared Radiation before Some Medium to Large Earthquakes in the Chuan–Dian (Sichuan–Yunnan) Rhombic Block[J].Acta Geoscientica Sinica,37(2):215-222. |
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