Study on the electronic density perturbation detected by DEMETER satellite before Wenchuan earthquake

Author

Liu, Jing ; Zhang, Xuemin ; Wan, Weixing ; Shen, Xuhui ; Ouyang, Xinyan ; Shan, Xinjian

Author_Institution

Inst. of Geol. & Geophys., Chinese Acad. of Sci., Beijing, China

fYear

2010

fDate

25-30 July 2010

Firstpage

3382

Lastpage

3385

Abstract

We used slope analysis and sliding Median method to study the electron density data observed by Langmuir probe of DEMETER satellite since April 25, 2008 to May 11, 2008, and obvious perturbation phenomena of electron density(N_e) in ionosphere were found before Wenchuan earthquake on May 12, 2008. Considering the geomagnetic disturbances, there were some abnormal information in different degrees on May 3, 4, 7, 9, 10, 11 respectively. Furthermore, on May 3 and May 4, along with the change of electron density, electron temperature was also elevated at the latitude of 10~30°N. Also on May 7, not only electron density increased, but also ion density did above the epicentral area.

Keywords

atmospheric electricity; earthquakes; electron density; geomagnetism; ionospheric disturbances; AD 2008 04 25 to 2008 05 11; DEMETER satellite; Langmuir probe; Wenchuan earthquake; geomagnetic disturbance; ionosphere electronic density perturbation; perturbation phenomena; sliding Median method; slope analysis; Earthquakes; Indexes; Ionosphere; Orbits; Probes; Satellites; Storms; DEMETER Satellite; Wenchuan earthquake; electron density perturbation; seismic anomaly;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2010 IEEE International

Conference_Location

Honolulu, HI

ISSN

2153-6996

Print_ISBN

978-1-4244-9565-8

Electronic_ISBN

2153-6996

Type

conf

DOI

10.1109/IGARSS.2010.5650344

Filename

5650344