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首先总结了国内外利用法国DEMETER卫星观测数据识别和提取地震电离层中主要参量扰动异常的常规研究方法,介绍了图像信息方法(pattern infoimatics method,简称PI方法)研究地震活动性异常及其应用于中长期地震危险性预测的研究进展和成果.然后主要介绍了改进型图像信息方法(modified pattern informatics methodd,简称MPI方法)在提取电磁卫星数据资料中的进展应用.该方法的震例研究结果显示,地震电离层中电子浓度(N_e)、电子温度(T_e)异常出现的时间一般在震前一个月左右,相对于其它方法提取到的异常在震前几小时至数天内,这一突出特点将使得MPI方法在短临地震预报中更具有可操作性.然而,该方法能否作为提取地震电离层异常扰动的实用数据处理方法并应用于地震短临预测中,尚需要进一步深入研究.最后本文提出了将MPI方法应用于提取地震电离层异常信息需要进一步解决的几个问题.
Firstly, the conventional research methods of identifying and extracting the disturbance of the main parameters in the seismic ionosphere by using the French DEMETER satellite observation data are summarized. The pattern infoimatics method (PI method) is introduced to study the seismicity anomaly and its application to The research progresses and achievements of mid- and long-term earthquake risk prediction are introduced.Furthermore, the application of modified pattern information method (MPI) to the extraction of electromagnetic satellite data is mainly introduced.The results of the earthquake case study , The time of anomalies of electron concentration (N_e) and electron temperature (T_e) in the seismic ionosphere generally occurs about a month before the earthquake, and the anomaly extracted relative to other methods is a few hours to several days before the earthquake. This salient feature Making MPI method more feasible in short-term and intermediate-point earthquake prediction.However, whether this method can be used as a practical data processing method to extract anomalous disturbance of seismic ionosphere and apply it to short-term earthquake prediction still needs further study.Finally, It is proposed that the MPI method should be used to extract the seismic ionospheric anomaly information Several problems solved.