Influence of geomagnetic disturbances on scintillations of GLONASS and GPS signals as observed on the Kola Peninsula
Author:
Belahovskiy Vladimir1, Budnikov Pavel2, Kalishin Alexey3ORCID, Pilgaev Sergey4, Roldugin Alexey5
Affiliation:
1. Polar Geophysical Institute 2. Institute of Applied Geophysics them. E.K. Fedorov 3. Arctic and Antarctic Research Institute 4. Polar Geophysical Institute RAS 5. Polyarnyy geofizicheskiy institut
Abstract
We have compared effects of geomagnetic disturbances during magnetic storms of various types (CME and CIR) and during an isolated substorm on scintillations of GLONASS and GPS signals, using a Septentrio PolaRx5 receiver installed in Apatity (Murmansk Region, Russia). We analyze observational data for 2021. The magnetic storms of November 3–4, 2021 and October 11–12, 2021 are examined in detail. The November 3–4, 2021 magnetic storm was one of the most powerful in recent years. The analysis shows that the scintillation phase index reaches its highest values during nighttime and evening substorms (σϕ≈1.5–1.8), accompanied by a negative bay in the magnetic field. During magnetic storms, positive bays in the magnetic field, associated with an increase in the eastward electrojet, lead, however, to quite comparable values of the phase scintillation index. An increase in phase scintillations during nighttime and evening disturbances correlates with an increase in the intensity of ULF waves (Pi3/Pc5 pulsations) and with the appearance of aurora arcs. This confirms the important role of ULF waves in forming the auroral arc and in developing ionospheric irregularities. The predominance of the green line in the spectrum of auroras indicates the contribution of disturbances in the ionospheric E layer to the scintillation increase. Pulsating auroras, associated with ionospheric disturbances in the D layer, do not lead to a noticeable increase in phase scintillations. Analysis of ionospheric critical frequencies according to ionosonde data from the Lovozero Hydrometeorological Station indicates the contribution of the sporadic Es layer of the ionosphere to jumps in phase scintillations. The difference between phase scintillation values on GLONASS and GPS satellites during individual disturbances can be as great as 1.5 times, which may be due to different orbits of the satellites. At the same time, the level of GLONASS/GPS scintillations at the L2 frequency is higher than at the L1 frequency. We did not find an increase in the amplitude index of scintillations during the events considered.
Publisher
Infra-M Academic Publishing House
Subject
Space and Planetary Science,Atmospheric Science,Geophysics
Reference35 articles.
1. Astafyeva E., Yasyukevich Yu., Maksikov A., Zhivetiev I. Geomagnetic storms, super-storms, and their impacts on GPS-based navigation systems. Space Weather. 2014, vol. 12, iss. 7, pp. 508–525. DOI: 10.1002/2014SW001072., Astafyeva E., Yasyukevich Yu., Maksikov A., Zhivetiev I. Geomagnetic storms, super-storms, and their impacts on GPS-based navigation systems. Space Weather. 2014, vol. 12, iss. 7, pp. 508–525. DOI: 10.1002/2014SW001072. 2. Basu S., Groves K.M., Basu S., Sultan P.J. Specification and forecasting of scintillations in communication/navigation links: Current status and future plans. J. Atmos. Solar-Terr. Phys. 2002, vol. 64 (16), pp. 1745–1754., Basu S., Groves K.M., Basu S., Sultan P.J. Specification and forecasting of scintillations in communication/navigation links: Current status and future plans. J. Atmos. Solar-Terr. Phys. 2002, vol. 64 (16), pp. 1745–1754. 3. Belakhovsky V.B., Pilipenko V.A., Samsonov S.N., Lorentsen D. Features of Pc5 pulsations in the geomagnetic field, auroral luminosity, and riometer absorption. Geomagnetism and Aeronomy. 2016, vol. 56, iss. 1, pp. 42–58. DOI: 10.1134/S001679321506002X., Belakhovsky V.B., Pilipenko V.A., Samsonov S.N., Lorentsen D. Features of Pc5 pulsations in the geomagnetic field, auroral luminosity, and riometer absorption. Geomagnetism and Aeronomy. 2016, vol. 56, iss. 1, pp. 42–58. DOI: 10.1134/S001679321506002X. 4. Belakhovsky V.B., Pilipenko V.A., Sakharov Ya.A., Lorentzen D.L., Samsonov S.N. Geomagnetic and ionospheric response to the interplanetary shock on January 24, 2012. Earth, Planets and Space. 2017, vol. 69, iss. 1, article id. #105, 25 p., Belakhovsky V.B., Pilipenko V.A., Sakharov Ya.A., Lorentzen D.L., Samsonov S.N. Geomagnetic and ionospheric response to the interplanetary shock on January 24, 2012. Earth, Planets and Space. 2017, vol. 69, iss. 1, article id. #105, 25 p. 5. Belakhovsky V.B., Jin Y., Miloch W. Influence of the substorm precipitation and polar cap patches on GPS signals at high latitudes. Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa [Current problems in remote sensing of the Earth from space]. 2020, vol. 17, no. 6, pp. 139–144. DOI: 10.21046/2070-7401-2020-17-6-139-144., Belakhovsky V.B., Jin Y., Miloch W. Influence of the substorm precipitation and polar cap patches on GPS signals at high latitudes. Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa [Current problems in remote sensing of the Earth from space]. 2020, vol. 17, no. 6, pp. 139–144. DOI: 10.21046/2070-7401-2020-17-6-139-144.
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