Ionospheric currents during geomagnetic storms and substorms
INGENIOUS
Rahoittajat
Projektin tiedot
Projektin kesto
-
Rahoittaja
Suomen Akatemia - Akatemiahanke
Projektin koordinaattori
University of Oulu
Yhteystiedot
Yhteyshenkilö
Projektin kuvaus
Avaruusympäristön ajallisten ja paikallisten vaihteluiden ymmärtäminen on kynnyskysymys Aurinko-Maa vuorovaikutuksen tutkimuksessa. Se on myös ehto tarkoille avaruussääennusteille, joita tarvitaan teknologisten systeemien suojaamiseen avaruussään haitallisilta vaikutuksilta. Esimerkiksi revontulimyrskyjen aikana syntyvät geomagneettisesti indusoituneet virrat (GIC-virrat) voivat aiheuttaa häiriöitä sähkönsiirtoverkoissa.
Tässä projektissa tutkimme ionosfäärivirtojen ajallisia ja paikallisia vaihteluita suurten geomagneettisten häiriöiden kuten myrskyjen ja alimyrskyjen aikana. Virtoja on helpoin havaita niiden synnyttämien magneettikenttien avulla, joten käytämme matalalla radalla oleviin satelliitteihin sekä maanpinnalle sijoitettujen magnetometrien tuottamia mittauksia. Tuloksiemme avulla pyritään kehittämään entistä tarkempia ennusteita revontulista sekä niihin liittyvistä GIC-virroista.
Projektiin osallistuu tutkijoita Oulun yliopistosta ja Ilmatieteen laitokselta.
Projektin tulokset
Apatenkov S.V., V.A. Pilipenko, E.I. Gordeev, A. Viljanen, L. Juusola, V.B. Belakhovsky, Ya.A. Sakharov and V.N. Selivanov: "Auroral omega bands are a significant cause of large geomagnetically induced currents", Geophys. Res. Lett., http://dx.doi.org/10.1029/2019GL086677, 2020.
Cai L., S. Oyama, A. Aikio, H. Vanhamäki and I. Virtanen: "Fabry-Perot interferometer observations of thermospheric horizontal winds during magnetospheric substorms", J. Geophys. Res. Space, http://dx.doi.org/10.1029/2018JA026241, 2019.
Dimmock A.P., L. Rosenqvist, J.-O. Hall, A. Viljanen, E. Yordanova, I. Honkonen, M. André and E.C. Sjöberg: "The GIC and geomagnetic response over Fennoscandia to the 7‐8 September 2017 geomagnetic storm", Space Weather, http://dx.doi.org/10.1029/2018SW002132, 2019.
Dimmock A.P., L. Rosenqvist, D. Welling, A. Viljanen, I. Honkonen, R.J. Boynton and E. Yordanova: "On the regional variability of dB/dt and its significance to GIC", Space Weather, http://dx.doi.org/10.1029/2020SW002497, 2020.
Dimmock A.P., D.T. Welling, L. Rosenqvist, C. Forsyth, M.P. Freeman, I.J. Rae, A. Viljanen, E. Vandegriff, R.J. Boynton, M.A. Balikhin and E. Yordanova: "Modeling the geomagnetic response to the September 2017 space weather event over Fennoscandia using the Space Weather Modeling Framework: Studying the impacts of spatial resolution", Space Weather, https://dx.doi.org/10.1029/2020SW002683, 2021.
Juusola L., H. Vanhamäki, A. Viljanen and M. Smirnov: "Induced currents due to 3D ground conductivity play a major role in the interpretation of geomagnetic variations", Ann. Geophys., http://dx.doi.org/10.5194/angeo-38-983-2020, 2020.
Kellinsalmi M., A. Viljanen, L. Juusola, and S. Käki: The time derivative of the geomagnetic field has a short memory, Ann. Geophys., 40, 545-562, https://doi.org/10.5194/angeo-40-545-2022, 2022.
Kozyreva O.V., V.A. Pilipenko, E.E. Marshalko, E.Y. Sokolova, M.N. Dobrovolsky: "Monitoring of Geomagnetic and Telluric Field Disturbances in the Russian Arctic", Appl. Sci. 12, 3755, https://doi.org/10.3390/app12083755, 2022.
Kozyreva O.V., V.A. Pilipenko, M.N. Dobrovolsky, A.N. Zaitsev, E.E Marshalko: "Database of geomagnetic observations in Russian Arctic and its application for estimates of the space weather impact on technological systems", Solar-Terrestrial Physics, 8, 39-50, https://doi.org/10.12737/stp-81202205, 2022.
Laundal K.M., J.H. Yee, V.G. Merkin, J.W. Gjerloev, H. Vanhamäki, J.P. Reistad, M. Madelaire, K. Sorathia: "Electrojet estimates from mesospheric magnetic field measurements", J. Geophys. Res., https://dx.doi.org/10.1029/2020JA028644, 2021.
Marshalko E., M. Kruglyakov, A. Kuvshinov, L. Juusola, N. Kaggwa Kwagala, E. Sokolova, V. Pilipenko: "Comparing Three Approaches to the Inducing Source Setting for the Ground Electromagnetic Field Modeling due to Space Weather Events", J. Geophys. Res. https://doi.org/10.1029/2020SW002657, 2021.
Oyama S., A. Shinbori, Y. Ogawa, M. Kellinsalmi, T. Raita, A. Aikio, H. Vanhamäki, et al. (23 authors), "An ephemeral red arc appeared at 68o MLat at a pseudo breakup during geomagnetically quiet conditions", J. Geophys. Res., http://dx.doi.org/10.1029/2020JA028468, 2020.
Palmroth M., M. Grandin, M. Helin, P. Koski, A. Oksanen, M.A. Glad, R. Valonen, K. Saari, E. Bruus, J. Norberg, A. Viljanen, K. Kauristie and P.T. Verronen: "Citizen scientists discover a new auroral form: Dunes provide insight into the upper atmosphere", AGU Advances, http://dx.doi.org/10.1029/2019AV000133, 2020.
Pedersen M.N., H. Vanhamäki, A.T. Aikio, S. Käki, A.B. Workayehu, C.L. Waters, J.W. Gjerloev: "Field-aligned and ionospheric currents by AMPERE and SuperMAG during HSS/SIR-driven storms", J. Geophys. Res., https://dx.doi.org/10.1029/2021JA029437, 2021.
Pedersen M.N., H. Vanhamäki, A.T. Aikio, C.L. Waters, J.W. Gjerloev, S. Käki , A.B. Workayehu: "Effect of ICME-driven storms on field-aligned and ionospheric currents from AMPERE and SuperMAG", accepted for publication in J. Geophys. Res., 2022.
Pitkänen T., A. Kullen, L. Cai, J.-S. Park, H. Vanhamäki, M. Hamrin, A.T. Aikio, S. Chong, A. De Spiegeleer, Q. Shi: "Asymmetry in the Earth's magnetotail neutral sheet rotation due to IMF By sign?", Geosci. Lett. https://dx.doi.org/10.1186/s40562-020-00171-7, 2021.
Sokolova E.Y., E.E. Marshalko, O.V. Kozyreva, I.S. Kupriyanov, D.V. Epishkin, V.A. Pilipenko, G.E. Slinchuk, D.V. Yakovlev, A.G. Yakovlev: "Study of Geoelectrical Responses to Space Weather Anomalies: Auroral Latitudes, Yenisei-Khatanga Regional Trough", Izv., Phys. Solid Earth, 58, 670-689, https://doi.org/10.1134/S1069351322050135, 2022.
Trenchi L. , K. Kauristie, S. Käki, Heikki Vanhamäki et al.: "ESA Field-Aligned Currents - Methodology Intercomparison Exercise", chapter 8 in Ionospheric Multi-Spacecraft Analysis Tools, M. Dunlop and H. Lühr (eds.), http://dx.doi.org/10.1007/978-3-030-26732-2_8, 2020.
Vanhamäki H. and L. Juusola: "Introduction to Spherical Elementary Current Systems", chapter 2 in Ionospheric Multi-Spacecraft Analysis Tools, M. Dunlop and H. Lühr (eds.), http://dx.doi.org/10.1007/978-3-030-26732-2_2, 2020.
Vanhamäki H., L. Juusola, K. Kauristie, A. Workayehu and S. Käki: "Spherical Elementary Current Systems applied to Swarm data", chapter 3 in Ionospheric Multi-Spacecraft Analysis Tools, M. Dunlop and H. Lühr (eds.), http://dx.doi.org/10.1007/978-3-030-26732-2_3, 2020.
Vanhamäki H., A. Maute, P. Alken and H. Liu: "Dipolar elementary current systems for ionospheric current reconstruction at low and middle latitudes", Earth Planets Space, http://dx.doi.org/10.1186/s40623-020-01284-1, 2020.
Waters C.L., B.J. Anderson, D.L. Green, H. Korth, R.J. Barnes and H. Vanhamäki: "Science data products for AMPERE", chapter 7 in Ionospheric Multi-Spacecraft Analysis Tools, M. Dunlop and H. Lühr (eds.), http://dx.doi.org/10.1007/978-3-030-26732-2_7, 2020.
Workayehy A., H. Vanhamäki, and A. Aikio: "Field-aligned and horizontal currents in the Northern and Southern hemispheres from the Swarm satellite", J. Geophys. Res., http://dx.doi.org/10.1029/2019JA026835, 2019.
Workayehu A., H. Vanhamäki and A. Aikio: "Seasonal effect on hemispheric asymmetry in ionospheric horizontal and field-aligned currents", J. Geophys. Res., http://dx.doi.org/10.1029/2020JA028051, 2020.
Workayehu A., H. Vanhamäki, A. Aikio and S. Shepherd: "Effect of interplanetary magnetic field on hemispheric asymmetry in ionospheric horizontal and field-aligned currents during different seasons", J. Geophys. Res., https://dx.doi.org/10.1029/2021JA029475, 2021.
Workayehu A.: "Studies of High-Latitude Ionospheric Currents Utilizing Swarm Satellites", Doctoral dissertation published in Report series in physical sciences, vol 143, University of Oulu, Finland, http://urn.fi/urn:isbn:9789526230481, 2021.