Data anomalies and prediction efficiency of Shiping horizontal pendulum tiltmeter before the Honghe MS 5.0 earthquake on November 19,2022
Honghe MS 5.0 earthquake occurred on November 19,2022.Morphological analysis and rate difference were used to process the pre-earthquake data of the horizontal pendulum tiltmeter of Shiping Station..The results show that before the Honghe MS 5.0 earthquake,the horizontal pendulum tiltmeter of Shiping has obvious medium and long-term anomalies,which mainly show the abnormal characteristics of decreasing annual variation amplitude,accelerating trend decline and rate difference jump.Through the backtracking analysis of prediction efficiency,the anomalies of Shiping horizontal pendulum tiltmeter have a good correlation with the surrounding moderate and strong earthquakes,the prediction of the time scale of earthquake occurrence by this anomaly index tends to be medium and long term.In general,Shiping horizontal pendulum tiltmeter shows a good seismic mapping effect.
horizontal pendulum tiltmeterHonghe MS 5.0 earthquakemorphological methodrate difference methodprediction efficiency
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