西藏地区地震前后地面温度特征提取分析

Characteristics Extraction of Land Ground Temperature Before and After the Earthquakes in Tibet

摘要:

基于我国气象站气温数据和美国国家环境预测中心地表温度数据,对西藏地区2010年1月—2014年12月的15次 M_S5.0以上地震开展地面温度数据的变化提取研究。计算结果显示,12次地震前出现了气温增强现象,13次地震前出现了地表温度增温异常,在震前同时出现两种温度结果增值现象的地震有10次,且两者的温度峰值日期非常接近,相互印证了西藏地区中强以上地震前存在地面温度增强的现象。

Abstract:

Using the air temperature data based on the China Meteorological Stations and the surface temperature data from National Centers for Environmental Prediction of America,the temperature changing extraction of 15 cases of M_S≥5.0 earthquakes from January,2010 to December,2014 in Tibet was studied. The results showed that air temperature enhancement anomaly appeared in 12 cases before the earthquake,and surface temperature enhancement anomaly appeared in 13 cases. There were 10 earthquakes which had the two kinds of temperature increment phenomena. Moreover,the peak date of two data were very close. It is mutually confirmed that there was rising land round temperature before moderate-strong earthquakes in Tibet.