Properties of daytime long-period pulsations during magnetospheric storm commencement

Klibanova, Yu. Yu.; Мишин, В. М.; Цэгмэд, Б.; Moiseev, A. V.

doi:10.1134/s0016793216040071

Cited by 8 publications

(4 citation statements)

References 19 publications

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“…The passage of waves of this frequency range from SW into the magnetosphere has been reported in [Mishin, 1996;Kessell et al, 2004;Potapov, Polyushkina, 2010;Klibanova et al, 2016].…”

Section: Dayside Sectormentioning

confidence: 90%

Magnetospheric response to the interaction with the sporadic solar wind diamagnetic structure

Parkhomov

Еселевич

et al. 2021

Solar-Terrestrial Physics

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We report the results of a study on the movement of the solar wind diamagnetic structure (DS), which is a sequence of smaller-scale microDS being part of the May 18, 2013 coronal mass ejection, from a source on the Sun to Earth’s surface. DS determined from the high negative correlation coefficient (r=–0.9) between the IMF modulus (B) and the SW density (N) on the ACE and Wind satellites at the L1 point, on the THB and THC satellites (r=–0.9) in near-Earth orbit, and on the THA satellite inside the magnetosphere is carried by the solar wind from the Sun to Earth’s orbit, while maintaining its fine internal structure. Having a large size in the radial direction (≈763 Rᴇ, where Rᴇ is the Earth radius), DS flows around the magnetosphere. At the same time, microDS of size ≤13 Rᴇ passes through the bow shock and magnetopause as a magnetized plasmoid in which the ion concentration increases from 10 cm⁻³ to 90 cm⁻³, and the velocity decreases as it moves toward the magnetotail. When a microDS passes through the magnetopause, a pulsed electric field of ~400 mV/m is generated with subsequent oscillations with a period of T~200 s and an amplitude of ~50 mV/m. The electric field accelerates charged particles of the radiation belt and produces modulated fluxes of protons in an energy range 95–575 keV on the day side and electrons in 40–475 keV and protons in 95–575 keV on the night side. In the duskside magnetosphere (19–23 MLT), the substorm activation is observed in geomagnetic pulsations and auroras, but without a magnetic negative bay. In the post-midnight sector (01–05 MLT), a sawtooth substorm occurs without the growth phase and breakup with deep modulation of the ionospheric current and auroral absorption. The duration of all phenomena in the magnetosphere and on Earth is determined by the period of interaction between DS and the magnetosphere (~4 hrs). To interpret the regularities of the magnetospheric response to the interaction with DS, we consider alternative models of the impulsive passage of DS from SW to the magnetosphere and the classical model of reconnection of IMF and the geomagnetic field.

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“…The passage of waves of this frequency range from SW into the magnetosphere has been reported in [Mishin, 1996;Kessell et al, 2004;Potapov, Polyushkina, 2010;Klibanova et al, 2016].…”

Section: Dayside Sectormentioning

confidence: 90%

Magnetospheric response to the interaction with the sporadic solar wind diamagnetic structure

Parkhomov

Еселевич

et al. 2021

Solar-Terrestrial Physics

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“…Large‐scale Alfven waves can also be generated by broadband sources, pulses arising when the magnetosphere interacts with interplanetary shock waves being one example (Fedorov et al., 1995; Klimushkin et al., 2012; Lee & Lysak, 1989). Such waves are indeed recorded rather often in the Earth’s magnetosphere during geomagnetic disturbances (Agapitov & Cheremnykh, 2013; Archer et al., 2013; Klibanova et al, 2016; Potapov, 2013).…”

Section: Introductionmentioning

confidence: 97%

The Field of Shock‐Generated Alfven Oscillations Near the Plasmapause

et al. 2021

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A theoretical interpretation is given for magnetohydrodynamic (MHD) oscillations observed by the GOES and Cluster satellites on November 7, 2004 near the plasmapause (Zong et al., 2009, 2012, https://doi.org/10.1029/2009ja014393, https://doi.org/10.1029/2012ja018024), before and after an interplanetary shock passes through the magnetosphere (about 18:27 UT). It is shown that, after the shock front passage, the MHD oscillation spectra recorded by Cluster (C1) and GOES 12, located respectively inside and outside the plasmasphere, differ significantly. According to our interpretation, these differences are due to the shock wavefront affecting the plasmapause and exciting broadband resonant Alfven waves, thus significantly changing the MHD oscillation spectrum. A model in the form of a plasma cylinder was developed in order to study MHD oscillations in the dayside magnetosphere numerically. An analytical model is proposed for the source of resonant Alfven waves that has the form of two fast magnetosonic wave packets propagating along the plasmapause, resulting from the shock wave/plasmapause interaction. Numerically calculated parameters of Alfven waves excited by a source based on this model show a good agreement with the oscillation parameters observed by satellites.

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“…Many studies are devoted to harmonic structure analysis (e.g., Takahashi & Denton, 2021; Yamamoto et al., 2022), but wave frequency distribution is rarely investigated, although it might be a clue to understand wave generation sources. For example, correlation was found between variations of SW density and IMF, and magnetic field oscillations inside the magnetosphere in Pc5 band (Kepko & Spence, 2003; Klibanova et al., 2016; Potapov, 2013). W. Liu et al.…”

Section: Introductionmentioning

confidence: 99%

“…Many studies are devoted to harmonic structure analysis (e.g., Takahashi & Denton, 2021;Yamamoto et al, 2022), but wave frequency distribution is rarely investigated, although it might be a clue to understand wave generation sources. For example, correlation was found between variations of SW density and IMF, and magnetic field oscillations inside the magnetosphere in Pc5 band (Kepko & Spence, 2003;Klibanova et al, 2016;Potapov, 2013). W. Liu et al (2009), using 13 months of Time History of Events and Macroscale Interactions During Substorms (THEMIS) mission data, analyzed spatial distribution of poloidal and toroidal wave peak frequency within Pc4 and Pc5 bands.…”

mentioning

confidence: 99%

Plasmasphere Control of ULF Wave Distribution at Different Geomagnetic Conditions

Rubtsov,

Nosé,

Matsuoka

et al. 2023

JGR Space Physics

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Magnetic storms and substorms cause global disturbances in the Earth's magnetosphere. Plasma clouds injected from the magnetotail during storm or substorm drift around the Earth and generate ultra‐low frequency (ULF) waves via various mechanisms. At the same time, the inner part of the magnetosphere called plasmasphere is filled with cold particles and its characteristics are sensitive to the geomagnetic activity level. Previous theoretical and some observational studies suggested plasmasphere and its boundary, plasmapause, are special regions for ULF waves to interact with charged particles. We present a statistical analysis of ULF waves during different geomagnetic conditions. We utilized Arase satellite magnetic field and electron density measurements from March 2017 to December 2020 to investigate spatial distribution of ULF waves and its dependence on the plasmapause location. A 1–2 RE gap between the plasmapause and a region of high transverse waves occurrence rate was found. This gap keeps during quiet geomagnetic conditions when plasmasphere expands, and we concluded that the plasmapause controls the ULF wave distribution in the magnetosphere. ULF wave occurrence rate significantly decreases at quiet time, but dayside and dawnside maxima still occur for poloidal and compressional, and toroidal waves, respectively. Thus, we can distinguish internally and externally excited waves. Average wave frequency distribution revealed field‐line resonance character of toroidal waves as frequency increases toward the Earth. Poloidal and compressional waves distributions clearly distinguish low frequency externally excited waves and high frequency storm‐time pulsations.

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Properties of daytime long-period pulsations during magnetospheric storm commencement

Cited by 8 publications

References 19 publications

Magnetospheric response to the interaction with the sporadic solar wind diamagnetic structure

Magnetospheric response to the interaction with the sporadic solar wind diamagnetic structure

The Field of Shock‐Generated Alfven Oscillations Near the Plasmapause

Plasmasphere Control of ULF Wave Distribution at Different Geomagnetic Conditions

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