Ionospheric anomaly before the 2011 Tohoku Mw 9.0 earthquake

Geodesy and Geodynamics

Su Fanfan¹  Zhou Yiyan¹  Yang Jian¹ 

[1] Key Laboratory of Earthquake Geodesy, Institute of Seismology, China Earthquake Administration, Wuhan 430071, China;

关键词: ionosphere;    tomography;    ionospheric anomaly;    Tohoku earthquake;    CMONOC;   

DOI  :  10.3724/SP.J.1246.2012.00017

来源: DOAJ

【 摘 要 】

Using Computerized Ionospheric Tomography (CIT) in combination with GPS observations from the Crustal Movement Observation Network of China (CMONOC), this study reconstructed the electron density distributions over China before the 2011 Tohoku Mw 9.0 earthquake and discovered a prominent ionospheric anomaly on March 8, 2011. Analysis of the solar-terrestrial space environment around the time of the Tohoku earthquake indicated that the March 8 ionospheric anomaly was likely related to the earthquake. Finally, the paper discusses the drift of the ionospheric anomaly, which was infeered from the anomaly being observed by GPS reference sites in China.

【 授权许可】

Unknown