震前卫星热红外异常与震级定量关系的统计研究

The Quantitative Relationship Between Thermal Infrared Anomaly and Earthquake Magnitude before Earthquakes:A Statistical Study

卫星热红外遥感资料的实际应用及大量震例归纳结果表明,强震发生前在震中附近存在不同程度的亮温异常,且异常随着时间的推移多表现为增温条带的出现或者大面积的不规则分布。在研究热红外异常临震预测中重点关注热红外异常与震级的关系,对2010~2014年发生于中国的总计151次MS5.0及以上地震热红外异常情况与震级大小进行线性拟合,得到了震级MS与临震前3d热红外异常区面积平均值Saver的二元一次关系表达式,首次定量分析了震级大小与热红外异常面积之间的关系。

Satellite thermal infrared remote sensing applications and a large number of earthquake cases show that there are different degrees of brightness temperature anomalies around the epicenter before the occurrence of strong earthquakes.Over time the anomalies appear as warming bands or a large area of irregular distribution.In this paper,we focus on the relationship between the thermal infrared anomalies related to earthquake magnitude in the prediction of earthquake appearance.We linearly fit the thermal anomalies over 151 magnitude MS5.0 earthquakes that occurred in China from 2010 to2014 to magnitude.The expression of the binary relationship between the magnitude,MS,and the average area of the thermal infrared anomaly area three days before the earthquake is obtained.The relationship between magnitude and thermal infrared anomaly area is analyzed quantitatively for the first time.It is better to connect the satellite thermal infrared with the earthquake magnitude.