CAJ | 학술논문

本文以静止卫星中波红外亮温为数据源，应用小波变换和计算功率谱方法对汶川8.0级地震和仲巴6.8级地震进行了分析研究。结果表明，这两次地震震前均出现了明显的短临热异常现象。这与长波辐射通量和热红外亮温资料的研究结果基本一致。在时间演化过程中热异常现象在震前存在一次明显的变化，这种变化有短临预测意义。地震前后热异常分布可能反映了区域应力集中和调整变化，根据异常的演化方向和异常消失区域可以估计发震的可能区域范围。
본문이정지위성중파홍외량온위수거원，응용소파변환화계산공솔보방법대문천8.0급지진화중파6.8급지진진행료분석연구。결과표명，저량차지진진전균출현료명현적단림열이상현상。저여장파복사통량화열홍외량온자료적연구결과기본일치。재시간연화과정중열이상현상재진전존재일차명현적변화，저충변화유단림예측의의。지진전후열이상분포가능반영료구역응력집중화조정변화，근거이상적연화방향화이상소실구역가이고계발진적가능구역범위。
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.