Empirically modelled Pc3 activity based on solar wind parameters

Heilig, B.; Lotz, Stefan; Verő, J.; Sutcliffe, P.; Reda, Jan; Pajunpää, K.; Raita, Tero

doi:10.5194/angeo-28-1703-2010

Cited by 36 publications

(51 citation statements)

References 47 publications

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“…Detailed information about the mission can be found at http://isdc.gfz-potsdam.de. The European MM100 network of magnetometers (Heilig et al, 2007(Heilig et al, , 2010 ranges from auroral to middle latitudes (42 < < 67…”

Section: Experimental Datamentioning

confidence: 99%

Pc2-3 geomagnetic pulsations on the ground, in the ionosphere, and in the magnetosphere: MM100, CHAMP, and THEMIS observations

Yagova

Heilig²,

Fedorov

2015

Ann. Geophys.

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Abstract. We analyze Pc2-3 pulsations recorded by the CHAMP (CHAllenging Minisatellite Payload) satellite in the F layer of the Earth's ionosphere, on the ground, and in the magnetosphere during quiet geomagnetic conditions. The spectra of Pc2-3 pulsations recorded in the F layer are enriched with frequencies above 50 mHz in comparison to the ground Pc2-3 spectra. These frequencies are higher than the fundamental harmonics of the field line resonances in the magnetosphere. High quality signals with dominant frequencies 70-200 mHz are a regular phenomenon in the F layer and in the magnetosphere. The mean latitude of the maximum Pc2-3 occurrence rate lies at L ≈ 3.5 in the F layer, i.e., inside the plasmasphere. Day-to-day variations of the L value of the CHAMP Pc2-3 occurrence rate maximum follow the plasmapause day-to-day variations. Polarization and amplitude of Pc2-3s in the magnetosphere, in the ionosphere, and on the ground allow us to suggest that they are generated as fast magnetosonic (FMS) waves in the outer magnetosphere and are partly converted into shear Alfven waves near the plasmapause. The observed ground-to-ionosphere amplitude ratio during the night is interpreted as a result of the Alfven wave transmission through the ionosphere. The problem of wave transmission through the ionosphere is solved theoretically by means of a numerical solution of the full-wave equation for the Alfven wave reflection from and transmission through a horizontally stratified ionosphere. The best agreement between the calculated and measured values of the ground-to-ionosphere amplitude ratio is found for k = 5 × 10 −3 km −1 , i.e., the observed ground-to-ionosphere amplitude ratio corresponds to a wave spatial scale which could provide a Doppler shift within a few percent of the apparent frequency of the Pc2-3 pulsations as recorded by a loworbiting spacecraft.

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Section: Experimental Datamentioning

confidence: 99%

Pc2-3 geomagnetic pulsations on the ground, in the ionosphere, and in the magnetosphere: MM100, CHAMP, and THEMIS observations

Yagova

Heilig²,

Fedorov

2015

Ann. Geophys.

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“…Plasma mass density at L ∼ 1.85 was inferred from FLR observations made on both hemispheres, at Nagycenk-Tihany in Hungary and at Hermanus-Southerland in South Africa (Heilig et al 2009a(Heilig et al , 2009b. The resulting density values, as well as, the variation of the density fitted well.…”

Section: Referencesmentioning

confidence: 73%

Hungarian national report on IAGA 2007–2010

Szarka¹,

Sátori²

2011

Acta Geodaetica et Geophysica Hungarica

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“…Therefore, a measure of ground Pc3 wave power could be a useful Pc3 index, characterizing the intensity of upstream turbulence [Heilig et al, 2010]. Additionally, the Pc3 central frequency enables one to determine the IMF magnitude.…”

Section: Wave Indices In Other Bandsmentioning

confidence: 99%

ULF wave power index for space weather and geophysical applications: A review

Пилипенко¹,

Козырева²,

Engebretson³

et al. 2017

Russ. J. Earth Sci.

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A ULF wave index, characterizing the level of the geomagnetic field variability in the frequency range 2-7 mHz, has been suggested to the space physics and geophysical community. This global wave index is produced from all available arrays of magnetometers and isolated stations in the Northern hemisphere. A similar ULF wave index is calculated using magnetometer data from geostationary (GOES) and interplanetary (Wind, ACE) satellites. In this review we demonstrate that a wide range of space physics studies, such as the solar wind-ionosphere coupling, wave energy transport, substorm physics, relativistic electron energization, ring current formation, electrodynamics of the ionosphere and magnetosphere, search for electromagnetic precursors of earthquakes, etc., has benefited from the introduction of the provisional ULF wave index. Possible ways of the ULF index advancement and development are discussed. The permanently updating ULF-index database is freely available via the website ulf.gcras.ru for all interested researchers for further validation and statistical studies. KEYWORDS: ULF waves; space weather; substorms; magnetic storms; earthquake precursors; geomagnetically induced currents; discrete mathematical analysis.

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Empirically modelled Pc3 activity based on solar wind parameters

Cited by 36 publications

References 47 publications

Pc2-3 geomagnetic pulsations on the ground, in the ionosphere, and in the magnetosphere: MM100, CHAMP, and THEMIS observations

Pc2-3 geomagnetic pulsations on the ground, in the ionosphere, and in the magnetosphere: MM100, CHAMP, and THEMIS observations

Hungarian national report on IAGA 2007–2010

ULF wave power index for space weather and geophysical applications: A review

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