地震地磁观测与研究2024，Vol.45Issue(1)：49-55,7.DOI:10.3969/j.issn.1003-3246.2024.01.007
高压直流输电干扰对江油地震台、盐源地震台地电场优势方位角的影响
Analysis of the influence of the HVDC transmission interference on the dominant azimuth of geoelectric field at Jiangyou Seismic Station and Yanyuan Seismic Station
摘要
Abstract
The dominant azimuth method of geoelectric field is used to study the geoelectric field of Jiangyou Seismic Station and Yanyuan Seismic Station in Sichuan Province.The original daily variation minute data of two stations during the period of HVDC transmission interference are selected for calculation and statistical analysis.It is found that:1.The amplitude,start and end time of interference in different days of the two stations are different.For example,there may be multiple HVDC transmission interference events in one day,as a result,the daily variation data shows a square wave shape.In addition,there may be HVDC transmission interference lasting for many days,which shows a continuous square wave change on the geoelectric field time series curve.2.The occurrence time of HVDC transmission in different direction finding of the station is consistent,for example,the observation curves of geoelectric field data at Jiangyou and Yanyuan stations show a jump at the same time.3.On the day when the two stations are interfered by HVDC transmission,both of the dominant azimuths at Jiangyou and Yanyuan stations show a decreasing change.4.The trend changes of the dominant azimuth of the two stations during the continuous interference period is different.The Jiangyou Station shows tight abnormal changes,while the Yanyuan Station shows downward fluctuations.关键词
地电场/方位角/高压直流输电干扰/变化特征Key words
geoelectric field/dominant azimuth/HVDC transmission interference/change characteristics引用本文复制引用
廖晓峰,王玮铭,江宁波,李雪浩,杨鹏..高压直流输电干扰对江油地震台、盐源地震台地电场优势方位角的影响[J].地震地磁观测与研究,2024,45(1):49-55,7.基金项目
国家重点研发计划课题(项目编号:2021YFC3000705) （项目编号:2021YFC3000705）
2024年震情跟踪定向工作任务(项目编号:2024010413) （项目编号:2024010413）
2023 年震情跟踪定向工作任务(项目编号:2023010412、2023010413) （项目编号:2023010412、2023010413）
2022年震情跟踪定向工作任务(项目编号:2022010413) （项目编号:2022010413）
