玉树Ms7.1地震前电离层异常扰动分析

地震 ›› 2014, Vol. 34 ›› Issue (3): 74-85.

玉树M_s7.1地震前电离层异常扰动分析

姚璐, 申旭辉, 张学民

中国地震局地震预测研究所,北京100036

收稿日期:2013-11-18 修回日期:2013-12-04 出版日期:2014-07-31 发布日期:2020-09-08
作者简介:姚璐（989-),女,江苏扬州人,在读硕士研究生,主要从事地震电离层异常研究。
基金资助:
国家高技术研究发展计划（863计划）

Analysis of lonospheric A nomalies Preceding the 2010 Y ushu M_s7.1 Earthquake

YAO Lu, SHEN Xu-hui, ZHANG Xue-min

Institute of Earthquake Science, CEA, Beijing 100036, China

Received:2013-11-18 Revised:2013-12-04 Online:2014-07-31 Published:2020-09-08

摘要/Abstract

摘要： 本文基于美国JPL实验室提供的全球电离层GPS TEC(GIM)数据和COSMIC掩星探测电子密度剖面,利用滑动四分位异常检测方法,综合分析了 2010年4月13日青海玉树M_s7. 1 地震前后15天内电离层异常的时空变化情况。研究结果表明,震前11天电离层TEC开始出现扰动异常,4月13日出现了明显的TEC增强现象,且峰值电子密度也存在相似的变化趋势,综合考虑空间活动水平等因素,认为这些异常很可能与玉树地震有关。

关键词: 电离层异常, GPS TEC, COSMIC, 电子密度剖面, 玉树M_s7.1地震

Abstract: In this paper,we analyzed the abnormal dist urbances of ionosphere within 20 days before and after the Yushu earthquake on April 13,2010, with the sliding quarter-back anomaly detection method, on the basis of the international ionosphere GPS TEC (GIM) data provided by JPL and electron density profile from COSMIC. The results show that the ionospheric TEC anomalies started from l1 days before the earthquake,and ab-normal increase of TEC appeared on April 13 while the peak electron density varied in the similar trend. Considering the space activities, we suggest that these anomalies may relate to the Yushu eart hquake.

Key words: Ionospheric anomaly, GPS TEC, COSMIC, Electron density profile, The 2010 Yushu M_s7.1 earthquake

中图分类号:

P315.7

姚璐, 申旭辉, 张学民. 玉树M_s7.1地震前电离层异常扰动分析[J]. 地震, 2014, 34(3): 74-85.

YAO Lu, SHEN Xu-hui, ZHANG Xue-min. Analysis of lonospheric A nomalies Preceding the 2010 Y ushu M_s7.1 Earthquake[J]. EARTHQUAKE, 2014, 34(3): 74-85.

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