地震地磁观测与研究2023，Vol.44Issue(5)：81-94,14.DOI:10.3969/j.issn.1003-3246.2023.05.011
中国大陆MS≥6.0地震前地电阻率异常特征
Apparent resistivity changes before the earthquakes of MS≥6.0 in China
摘要
Abstract
China's seismic earth resistivity observation serves the medium and short-term earthquake prediction by continuously monitoring the change of underground medium resistivity with time and its spatial distribution.Since the observation was carried out in 1967,a large amount of observation data and many abnormal changes before moderate and strong earthquakes have been accumulated.Through literature research and data analysis,this paper systematically combs the earth resistivity anomalies before MS≥6.0 earthquakes in and around the observation station network.Statistical analysis shows that the ratio of observation stations with abnormal ground resistivity before earthquakes with MS≥6.0 decreases significantly with the increase of epicenter distance;The duration of anomalies before MS 6.0-6.9 earthquakes increases slightly with the increase of magnitude,and there is no phenomenon that the duration increases with magnitude before MS≥7.0 earthquakes;The duration of anomaly before MS≥7.0 earthquakes decreases with the increase of epicenter distance,but the dispersion of statistical results is large,while there is no secondary phenomenon before MS 6.0-6.9 earthquakes.On the whole,the anomaly duration in different epicentral distances does not show good regularity.关键词
MS≥6.0地震/地电阻率/异常特征/持续时间/震中距Key words
MS≥6.0 earthquakes/earth resistivity/anomaly characteristics/duration/epicenter distance引用本文复制引用
韩盈,于晨,解滔..中国大陆MS≥6.0地震前地电阻率异常特征[J].地震地磁观测与研究,2023,44(5):81-94,14.基金项目
国家自然科学基金(项目编号:42104075) （项目编号:42104075）
