[P-EM27] Physics and Chemistry in the Atmosphere and Ionosphere

[PEM27-P13] Estimation of spatial structure of sporadic E layer observed by S-310-40 rocket with 2-dimentional FDTD simulations

*Taketoshi MIYAKE¹, Hironori INOUE¹, Keigo ISHISAKA¹ (1.Toyama Prefectural University)

Keywords:Sporadic E layer, spatial structure, 2D FDTD simulation

We developed a 2-dimensional FDTD simulation code
which can treat wave propagations in magnetized plasma.
According to sounding rocket experiments,
we can only obtain altitude profile of wave intensity,
usually magnetic field intensity.
In this study, therefore, we are going to estimate spatial structure of sporadic E layer
in the lower ionosphere by analyzing the altitude profile of the magnetic field intensities.

We compared simulation results and observation results obtained by S-310-40 sounding rocket,
but were not able to identify spatial structure of the sporadic E layer.
This is because the scale of the spatial structure of the sporadic E layer
assumed in the simulation was inappropriate.
We are going to perform 2-dimensional FDTD simulations with different spatial scales of the sporadic E layer,
and investigate the influence that a scale of the space structure gives electric wave propagation.
Then, we will identify spatial structure of the sporadic E layer observed by S-310-40 sounding rocket
from the altitude profile of the magnetic field.