1. ULF Wave Propagation
Observations and modelling the wave mode evolution of an impulse-driven 3 mHz ULF wave
Presented at the
Royal Astronomical Society Discussion Meeting
8th January 2010
Author: Dr. James D. Borderick

5. The Plot shows the filtered FFT analysis of the 10 second DOPE data (panel (a)) with the X (panel (b)) and Y (panel (c)) components of the field FFT of the Tromsø IMAGE magnetometer
We can clearly see the 3.05 mHz ULF wave in all three of the panels.
We show that the resampling of the DOPE data from 12.8 seconds to 10 seconds now makes analysis with the IMAGE FFT satisfactory

6. The Plots show the power and phase as recorded in each of the IMAGE magnetometers for the x component of the field.
The overplotted dashed green line shows the position of Tromsø
The overplotted blue solid line shows the peak power station
The overplotted red dashed line shows the fitted phase

7. Cross Phase showing a Phase Evolution

10. Can we observe an
evolution of wave mode
in the ionosphere
as the impulsive wave
evolves towards FLR?