基于国家电波观测站网电离层垂测数据的地震电离层异常研究进展

地震电离层异常现象已被大量观测所证实，地震电离层异常的特征分析及其物理机理研究对开展地震监测意义重大.近年来，中国电波传播研究所利用国家电波观测站网长期积累的电离层垂测数据，开展了震例分析及其机理研究，初步获得了震前电离层的异常特征，并建立了岩石圈-大气层-电离层电场耦合物理模型.本文简要介绍了近年来我们在该领域的研究进展，并对该领域的发展方向提出建议. 

Recent progress in the study of ionospheric anomalies before strong earthquakes using ionosonde data of National Radio Observation Network in China

Ionospheric anomalies before strong earthquakes have been evidenced by many kinds of observations. Analyses of ionospheric anomalies characteristics and investigation of the corresponding physical mechanism are of great significance to monitoring seismic precursors. China Research Institute of Radiowave Propagation (CRIRP) has conducted a series of studies on the ionospheric anomalies before earthquakes and investigation of the corresponding physical mechanisms based on several decades of ionosonde data recorded by the National Radio Observation Network in China, and preliminarily obtained characteristics of ionospheric anomalies before earthquakes and established a comprehensive model of lithosphere-atmosphere-ionosphere electric coupling. This paper reviews the recent progress of the relevant studies, and gives tendentious emphasis for further study.