Observation of daytime polar cusp from Tixie Bay and Norilsk auroral stations
V.L. Khalipov1, A.E. Stepanov2,3, V.A. Telegin4,5, V.A. Panchenko4
1
Space Research Institute, Russian Academy of Sciences, Moscow, Russia, khalipov@iki.rssi.ru
Institute of Cosmophysical Research and Aeronomy, Russian Academy of Sciences, Yakutsk,
Russia
3
Technological Institute of North-Eastern Federal University, Yakutsk, Russia
4
Pushkov Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Russian
Academy of Sciences, Troitsk, Russia
5
OAO NPK NIIDAR, Moscow, Russia
2
In the daytime sector of polar ionosphere an oblique radiotraces of SW-band can occurs in
various different areas: near the sharp equatorial boundary of daytime polar cusp, near the
discrete auroral arcs in the daytime cleft and on the equatorial boundary of the daytime diffuse
auroral zone. Observations that are using technology of oblique sounding are carried out in Tixie
Bay station for a long time. On the basis of a large set of measurement statistics it can localize
the region of daytime radio reflections. The comparison with the same satellite data of daytime
polar cusp positions and diffuse auroral zone shows that both types of measurements of these
structures give good consistent results. The installation in Tixie Bay auroral station of up-to-date
digital ionosonde DPS-4 which is fitted with additional horizontal rhombic antenna system could
make continuous and on-line monitoring of locations of daytime polar cusp and cleft for 5-6
hours in daytime sector and study its dynamics depending on the parameters of the interplanetary
magnetic field. Other possibilities of DPS-4 ionosonde on auroral stations are discussed in detail.