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https://doi.org/10.5194/nhessd-1-5643-2013
https://doi.org/10.5194/nhessd-1-5643-2013
16 Oct 2013
 | 16 Oct 2013
Status: this preprint has been withdrawn by the authors.

Study of the 2013 Lushan M = 7.0 earthquake coseismic ionospheric disturbances

P. Chen, J. J. Chen, W. Q. Yao, and B. Zhang

Abstract. On 20 April 2013, an earthquake of M =7.0 occurred in Lushan, Sichuan province, China. This paper investigates the coseismic ionospheric anomalies using GPS (Global Positioning System) data from 23 reference stations in Sichuan province that are a part of the Crustal Movement Observation Network of China (CMONOC). The recorded results show that a clear ionospheric anomaly occurred within 15 min after the earthquake near the epicenter, and the occurrence time of the anomalies recorded by various stations is related to the distance from the epicenter. The maximum anomaly is 0.25 TECu, with a 2 min duration and the distance of the recording station to the epicenter is 83 km. Acoustic waves generated by the crustal vertical movement during the earthquake propagate up to the height of the ionosphere lead to the ionospheric anomaly, and the propagation speed of the acoustic wave is calculated as 0.72 ± 0.04 km s-1 based on the propagation time and propagation distance, consistent with the average speed of sound waves within a 0–450 km atmospheric height.

This preprint has been withdrawn.

P. Chen, J. J. Chen, W. Q. Yao, and B. Zhang

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
P. Chen, J. J. Chen, W. Q. Yao, and B. Zhang
P. Chen, J. J. Chen, W. Q. Yao, and B. Zhang

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