Conveners
(DASP) F1-2 Magnetosphere-Ionosphere Coupling | Couplage magnétosphère-ionosphère (DPAE)
- Ian Mann (University of Alberta)
The bulk of information on polarisation and propagation of ultra-low frequency (ULF, 1-1000 mHz) waves is normally obtained using ground-based magnetometer arrays. However, the ground ULF field observations may be significantly distorted by the transition of the magnetohydrodynamic wave into an electromagnetic wave at the boundary between the ionised and neutral parts of the atmosphere. These...
Photoelectrons are an important source of ionization and ambient electron heating in ionosphere. Primary photoelectrons are produced via ionization of neutral atoms in thermosphere by solar EUV photons. Secondary photoelectrons are produced via ionization by primary photoelectrons. There are different ways of calculation of photoelectron effects. The most accurate way is to use the kinetic...
Equatorial plasma bubbles (EPBs) are ionospheric irregularities which tend to be aligned parallel to the Earth's magnetic field. They are initated in the bottomside
of the F-region of the equatorial ionosphere by an instability
known as the Rayleigh-Taylor instability. EPBs impose effects on radio signals
and cause errors in Global Navigation Satellite Systems (GNSS) because
they alter the...
The paper discusses the validation of a 3D ionospheric drift velocity estimation algorithm developed by the authors. This algorithm will be integrated into the Sanimut system, which is being developed by the Radio and Space Physics Laboratory (RSPL) at the University of New Brunswick as a state-of-the-art, next-generation HF measurement platform. The system is set to replace the Canadian...
We present highly-averaged data on the ionospheric electron density to illustrate solar-cycle, seasonal, and diurnal variations over Poker Flat (Alaska) for the period of 2010-2019. Considered are measurements by the PFISR incoherent scatter radar and onboard Swarm satellites (at ~ 450 and 510 km) and predictions by the e-CHAIM empirical model. We demonstrate major expected dependencies and...
