地震地磁观测与研究2024，Vol.45Issue(2)：101-111,11.DOI:10.3969/j.issn.1003-3246.2024.02.013
巴彦浩特石英水平摆倾斜仪地震地球物理短临异常分析
Analysis of short-term and imminent anomalies of seismic geophysics of Bayanhot quartz pendulum tiltmeter
摘要
Abstract
By collecting and arranging the observed data of the Bayanhot quartz pendulum tiltmeter from 2015 to 2022,using the theory of wavelet analysis,selecting typical earthquake cases,and combining the characteristics of earthquake preparation in the observed area,the short-term and imminent anomalies of the precursor of quartz horizontal pendulum tiltmeter in Bayanhot earthquake are analyzed systematically.The analysis results show that the observed data of the quartz pendulum tiltmeter at Bayanhot Seismic Station have obvious short-term and imminent anomalies for typical earthquake cases;the specific features are tilting,step change,abrupt jump,distortion,and disturbance of the north-south component in a time before the earthquake.Through analysis and demonstration,it is concluded that the short-term and imminent anomaly of the observed data of the Bayanhot quartz pendulum tiltmeter is better than the short-term anomaly,and the duration and size of the anomaly are related to the magnitude and epicenter distance of the earthquake.It can provide an effective reference for the analysis of short-term and imminent anomalies of precursory instruments in the Alxa League and its surrounding areas.关键词
地震地球物理异常/石英水平摆倾斜仪/小波分析Key words
seismic geophysics anomalies/quartz pendulum tiltmeter/wavelet analysis引用本文复制引用
叶子青,吴桐,苏世兵,李腾宇,邹鑫慈,王鑫,李天凯..巴彦浩特石英水平摆倾斜仪地震地球物理短临异常分析[J].地震地磁观测与研究,2024,45(2):101-111,11.基金项目
内蒙古自治区地震局局长基金(项目编号:2023QN28) （项目编号:2023QN28）
