• 欢迎访问ERC!
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 163次   下载 114 本文二维码信息
码上扫一扫!
分享到: 微信 更多
The Background Variation of Natural Source ELF and Its EM Abnormal Phenomena in Yunnan Earthquakes
Fan Ye,Tang Ji,Han Bing,Cui Tengfa,Xu Qin
作者单位
Fan Ye China Earthquake Networks Center, Beijing 100045, China;State Key Laboratory of Earthquake Dynamics, Institute of Geology, CEA, Beijing 100029, China 
Tang Ji State Key Laboratory of Earthquake Dynamics, Institute of Geology, CEA, Beijing 100029, China 
Han Bing State Key Laboratory of Earthquake Dynamics, Institute of Geology, CEA, Beijing 100029, China 
Cui Tengfa State Key Laboratory of Earthquake Dynamics, Institute of Geology, CEA, Beijing 100029, China 
Xu Qin China Earthquake Networks Center, Beijing 100045, China 
摘要:
In order to add earthquake monitoring methods and develop new method research, the ELF Network for Earthquake Monitoring selected 30 stations in the Capital Circle and the Sichuan-Yunnan region. Finding electromagnetic field background variation is the basis of distinguishing the seismic electromagnetic anomalies. This paper introduces the data acquisition and selection of the Shexian, Anqiu, Lijiang and Dali stations which have recorded for longer time with better data and are located on the similar latitude. Then we use the natural source electromagnetic field's auto-power spectrum to express the intensity of the electromagnetic field. By using power spectral data of many frequencies in the observation frequency band, after the data pre-processing and sliding average noising, the background variation of extremely low frequency stations and the range ability were acquired. Taking the Baoshan M5.1 earthquake on October 30, 2015 and Dali M5.0 earthquake on May 18, 2016 as examples, the authors analyzed the earthquake electromagnetic anomaly characteristic of ELF stations around the earthquakes.
关键词:  Natural source  Extremely low frequency(ELF)  Electric and magnetic fields auto-power spectrum  Background variation  Earthquake electromagnetic anomaly (EM)
DOI:
分类号:
基金项目:This project was sponsored by the Youth Fund Project of CEA in 2017 (QNJJ201702).
The Background Variation of Natural Source ELF and Its EM Abnormal Phenomena in Yunnan Earthquakes
Fan Ye,Tang Ji,Han Bing,Cui Tengfa,Xu Qin
Abstract:
In order to add earthquake monitoring methods and develop new method research, the ELF Network for Earthquake Monitoring selected 30 stations in the Capital Circle and the Sichuan-Yunnan region. Finding electromagnetic field background variation is the basis of distinguishing the seismic electromagnetic anomalies. This paper introduces the data acquisition and selection of the Shexian, Anqiu, Lijiang and Dali stations which have recorded for longer time with better data and are located on the similar latitude. Then we use the natural source electromagnetic field's auto-power spectrum to express the intensity of the electromagnetic field. By using power spectral data of many frequencies in the observation frequency band, after the data pre-processing and sliding average noising, the background variation of extremely low frequency stations and the range ability were acquired. Taking the Baoshan M5.1 earthquake on October 30, 2015 and Dali M5.0 earthquake on May 18, 2016 as examples, the authors analyzed the earthquake electromagnetic anomaly characteristic of ELF stations around the earthquakes.
Key words:  Natural source  Extremely low frequency(ELF)  Electric and magnetic fields auto-power spectrum  Background variation  Earthquake electromagnetic anomaly (EM)