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Giant Disturbance in the Ionospheric F2 Region Prior to the M8.0 Wenchuan Earthquake on 12 May 2008 : Volume 28, Issue 8 (13/08/2010)

By Xu, T.

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Book Id: WPLBN0003982073
Format Type: PDF Article :
File Size: Pages 6
Reproduction Date: 2015

Title: Giant Disturbance in the Ionospheric F2 Region Prior to the M8.0 Wenchuan Earthquake on 12 May 2008 : Volume 28, Issue 8 (13/08/2010)  
Author: Xu, T.
Volume: Vol. 28, Issue 8
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Wu, Z., Hu, Y., Feng, J., Wu, J., Suo, Y., & Xu, T. (2010). Giant Disturbance in the Ionospheric F2 Region Prior to the M8.0 Wenchuan Earthquake on 12 May 2008 : Volume 28, Issue 8 (13/08/2010). Retrieved from

Description: School of Science, Xidian University, Xi'an 710071, China. On 12 May 2008 at 14:28 LT great earthquake (M=8.0) occurred at Wenchuan (31.00° N, 103.40° E), China. The hourly values of foF2 are analyzed over ten ionospheric observatories: Haikou (20.00° N, 110.33° E), Kunming (25.00° N, 102.70° E), Guangzhou (20.00° N, 113.70° E), Chongqing (29.50° N, 106.40° E), Lhasa (29.63° N, 91.17° E), Lanzhou (36.07° N, 103.87° E), Beijing (40.00° N, 116.30° E), Urumqi (43.75° N, 87.63° E), Chuangchun (43.83° N, 125.30° E) and Manzhouli (49.60° N, 117.45° E). With a new factor, effective sunspot number Reff, the results show that there were giant positive disturbances of foF2 around the epicentral zone on 9 May, 3 days prior to the earthquake. Our results indicate that the observed positive ionospheric disturbances were most possibly associated with the imminent earthquake and the new analytic method has good prospects in practice.

Giant disturbance in the ionospheric F2 region prior to the M8.0 Wenchuan earthquake on 12 May 2008

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