The neutral temperature in the ionospheric dynamo region and the ionospheric F region density during Wenchuan and Pingtung Doublet earthquakes

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Title:	The neutral temperature in the ionospheric dynamo region and the ionospheric F region density during Wenchuan and Pingtung Doublet earthquakes
Authors:	Sun,YY;Oyama,KI;Liu,JY;Jhuang,HK;Cheng,CZ
Contributors:	太空科學研究所
Date:	2011
Issue Date:	2012-03-27 17:32:47 (UTC+8)
Publisher:	國立中央大學
Abstract:	One of the possible candidates which modifies the ionosphere before large earthquake is electric field. We presume that the electric field associated with large earthquakes is generated in the ionosphere dynamo region (100-120 km). This paper tries to identify the evidence of the contribution of the neutral atmosphere in the dynamo region. The relationship between the critical frequency at the F2 peak (foF2) and the height profile of the neutral atmosphere temperature was studied for two large earthquakes: Wenchuan, 2008 and Pingtung Doublet, 2006. It is found that the wave amplitude of the vertical wavelength 20-30 km which is usually superposed on the height profile of the neutral atmosphere temperature enhances when the foF2 increases. The correlation between the wave amplitude and foF2 is found better along a longitudinal direction than along latitude direction.
Relation:	NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
Appears in Collections:	[Graduate Institute of Space Science] journal & Dissertation

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