Ionospheric Electron Density Perturbations Driven by Seismic Tsunami-Excited Gravity Waves: Effect of Dynamo Electric Field

Journal of Marine Science and Engineering

John Z. G. Ma¹  Michael P. Hickey¹  Attila Komjathy² 

[1] Department of Physical Sciences, Embry-Riddle Aeronautical University, Daytona Beach, FL 32114, USA; E-Mail:;NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; E-Mail:

关键词: seismic tsunami;    gravity wave;    ionosphere;    electron density;    electric field;    total electron content (or TEC);   

DOI  :  10.3390/jmse3041194

来源: mdpi

【 摘 要 】

The effect of an ionospheric dynamo electric field on the electron density and total electron content (TEC) perturbations in the F layer (150–600 km altitudes) is investigated at two arbitrarily selected locations (noted as 29° N and 60° N in latitudes) in the presence of seismic tsunami-excited gravity waves propagating in a stratified, nondissipative atmosphere where vertical gradients of atmospheric properties are taken into consideration. Generalized ion momentum and continuity equations are solved, followed by an analysis of the dynamo electric field (E). The E-strength is within several mV/m, determined by the zonal neutral wind and meridional geomagnetic field. It is found that, at the mid-latitude location, , except a jump to >25% in the F2-peak layer (300–340 km in height). By contrast, at the low-latitude location, the TEC jump is eliminated by the locally enhanced background electron density.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.