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ISSN 2096-7780 CN 10-1665/P

廖洪月, 钟美娇, 张永仙, 郭昱琴, 郑怡. 基于甘肃积石山6.2级和日本能登7.4级地震前热红外现象之均线差值增强比法的异常提取能力分析[J]. 地震科学进展 . DOI: 10.19987/j.dzkxjz.2024-018
引用本文: 廖洪月, 钟美娇, 张永仙, 郭昱琴, 郑怡. 基于甘肃积石山6.2级和日本能登7.4级地震前热红外现象之均线差值增强比法的异常提取能力分析[J]. 地震科学进展 . DOI: 10.19987/j.dzkxjz.2024-018
Liao Hongyue, Zhong Meijiao, Zhang Yongxian, Guo Yuqin, Zheng Yi. Anomaly extraction capability analysis based on the mean line difference enhancement ratio method for thermal infrared phenomena before the Jishishan M6.2 earthquake in Gansu Province and Noto M7.4 earthquake in Japan[J]. Progress in Earthquake Sciences. DOI: 10.19987/j.dzkxjz.2024-018
Citation: Liao Hongyue, Zhong Meijiao, Zhang Yongxian, Guo Yuqin, Zheng Yi. Anomaly extraction capability analysis based on the mean line difference enhancement ratio method for thermal infrared phenomena before the Jishishan M6.2 earthquake in Gansu Province and Noto M7.4 earthquake in Japan[J]. Progress in Earthquake Sciences. DOI: 10.19987/j.dzkxjz.2024-018

基于甘肃积石山6.2级和日本能登7.4级地震前热红外现象之均线差值增强比法的异常提取能力分析

Anomaly extraction capability analysis based on the mean line difference enhancement ratio method for thermal infrared phenomena before the Jishishan M6.2 earthquake in Gansu Province and Noto M7.4 earthquake in Japan

  • 摘要: 2023年12月18日甘肃省积石山县发生6.2级、2024年1月1日日本能登发生7.4级地震,两次地震间隔时间较短,均造成较多的死亡人数和巨大的财产损失,引起地震界的高度关注。运用均线差值振幅增强比法分析发现,这两次地震前均存在显著热红外异常:积石山地震前约110~90天,长波辐射热红外活跃性高于历史平均水平1.5~5倍。日本能登地震前约140~100天期间热红外活跃性水平高于历史平均水平3~4倍。以上现象再次证明了强震前存在热红外异常现象,也侧面说明了均线差值振幅增强比法具有较强的热红外异常提取能力。

     

    Abstract: On December 18, 2023, a M6.2 earthquake occurred in Jishishan County of Gansu Province, and on January 1, 2024, a M7.4 earthquake occurred in Noto, Japan, with a short interval between the two earthquakes. They caused a large number of deaths and huge property losses with causing great concern in the seismic community. By using the mean line difference amplitude enhancement ratio method, it was found that there were significant thermal infrared anomalies before the two earthquakes: about 110 to 90 days before the Jishishan earthquake, the activity of long-wave radiant thermal infrared was 1.5 to 5 times higher than the historical average. Thermal infrared activity levels were 3 to 4 times higher than the historical average for about 140 to 100 days before the Noto earthquake in Japan. These results once again prove that there are thermal infrared anomalies before strong earthquakes, and also indicate that the mean line difference amplitude enhancement ratio method has strong ability to extract thermal infrared anomalies.

     

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