Spatio-temporal characteristics of subionospheric perturbations associated with annular solar eclipse

Daiki INUI; Yasuhide HOBARA

Presentation information

Oral

Symbol M (Multidisciplinary and Interdisciplinary) » M-IS Intersection

[M-IS26_29AM1] Atmospheric Electricity

Tue. Apr 29, 2014 9:00 AM - 10:45 AM 422 (4F)

Convener:*Yasuhide Hobara(Graduate School of Information and Engineering Department of Communication Engineering and Informatics, The University of Electro-Communications), Tomoo Ushio(Information and communication engineering department, Osaka University), Chair:Yasuhide Hobara(Graduate School of Information and Engineering Department of Communication Engineering and Informatics, The University of Electro-Communications)

9:45 AM - 10:00 AM

[MIS26-04] Spatio-temporal characteristics of subionospheric perturbations associated with annular solar eclipse

*Daiki INUI¹, Yasuhide HOBARA¹ (1.Graduate School of Informatics and Communication Eng., The University of Electro-Communications)

Keywords:Annular solar eclipse, Ionospheric perturbations, VLF radio waves, FDTD method

In this paper, we analyse UEC's VLF/LF transmitter observation network data associated with annular solar eclipse in 2012. Clear temporal dependences of the VLF amplitude are observed by various transmitter-receiver paths. Numerical computations of VLF/LF signals with the ionospheric perturbations due to the solar eclipse are carried out by using 2D-FDTD method. As a result, temporal variations of the VLF/LF amplitude are in rather good agreement with those from the numerical modeling.