利用垂测仪和IGS数据研究震前电离层异常

详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文

英文篇名：Study of Ionosphere Anomalies Before Earthquakes by the Vertical Measuring Instrument and IGS Data 中文刊名：山西电子技术 英文刊名：Shanxi Electronic Technology 作者：赵涛 ; 张鹤 ; 李创辉 英文作者：Zhao Tao ; Zhang He ; Li Chuang-hui (School of Information & Communication Engineering ; Guilin University of Electronic Technology ; Guilin Guangxi 541004 ; China) 中文关键词：地震前兆 ; VTEC ; foF2 英文关键词：earthquake precursors ; VTEC ; foF2 出版日期：2011-06-15 机构：桂林电子科技大学信息与通信学院; 年：2011 期：03 出版单位：山西电子技术

摘要

利用SPIDR网站的垂测仪数据和IGS网站的VTEC(垂直总电子含量)数据分析震前电离层异常。选取2009年10月24日发生在Banda sea的6.9级地震和2009年4月6日发生在意大利中部的6.4级地震,分析垂测仪观测到的电离层F2层临界频率foF2,同时分析相应时段的VTEC数据。研究结果显示电离层异常多集中在震前3～5天,在分析地磁和太阳的活动后,认为这些异常很可能是由即将来临的地震引起的。
The ionosphere anomalies before earthquake is analyzed by the vertical measurement instrument data of the SPIDR site and the VTEC(vertical total electron content) data of the IGS site.It selects the 6.9 magnitude earthquake in the Banda sea on October 24,2009 and the 6.4 magnitude earthquake in central Italy on April 6,2009 to analyze the critical frequency foF2 in ionosphere F2 layer detected by the vertical measuring instrument,and simultaneous analyze the VTEC data in the corresponding time.The results show that the ionosphere anomalies are mostly concentrated in 3-5 days before the earthquake;it thinks that these anomalies are likely caused by the upcoming earthquake after the analysis on geomagnetic activity and solar activity.

引文

[1]Liu J Y.Seismo-geomagnetic Anomalies and M≥5.0Earthquakes Observed in Taiwan During 1988-2001[J].Physics and Chemistry of the Earth,31:215-222.
    [2]Dobrovolsky I P,Zubkov S I,Miachkin V I.Estimationfor the Size of Earthquake Preparation Zones[J].Pureand Applied Geophysics,1979,117:1025-1044.
    [3]祝芙英,吴云,林剑,等.汶川地震前电离层VTEC的异常响应[J].地震学报,2009,31(2):180-187.