Solar wind-magnetosphere-ionosphere coupling and chaotic dynamics

Lakhina, G. S.

doi:10.1007/bf00666091

Cited by 12 publications

(17 citation statements)

References 102 publications

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“…This is the hourly average of the deviation of H (horizontal) component of the magnetic field measured by several ground stations in mid to low-latitudes. Dst = 0 means no deviation from the quiet condition, and Dst ≤ -50nT means magnetic storms [3,4]. We have analyzed the events represented by maximum Dst decrease and selected by using the selection procedure of Loewe and Prolss [9].…”

Section: Selection Criteria and Datamentioning

confidence: 99%

“…Fast CME produce transient IP shocks, which cause storm sudden commencement at earth. Geomagnetic storms are associated with isolated disappearing filaments [3,10,11]. The occurrence of prominences and flares are also associated with varying phases of sunspot cycle leading to the geomagnetic storms.…”

Section: Introductionmentioning

confidence: 99%

“…The disturbances may be limited to the high-latitude polar region, unless the interplanetary magnetic field (IMF) carried by the solar wind has long periods (several hours or more) of southward component (Bz < 0) with large magnitudes [2][3][4]. The occurrence of such a period stresses the magnetosphere continuously, causing the magnetic field disturbance to reach the equatorial region.…”

Section: Selection Criteria and Datamentioning

confidence: 99%

“…The study of these worldwide disturbances of Earth's magnetic field are important in understanding the dynamics of solar-terrestrial environment and furthermore because such storms can cause life threatening power outrages, satellite damage, communication failure and navigational problems [2][3][4]. Since the beginning of the space age, the cause of geomagnetic activity has been sought in a number of correlative studies [1].…”

Section: Introductionmentioning

confidence: 99%

“…Solar wind velocity V, interplanetary magnetic field (IMF) B and Bz [1,2,4]. Furthermore, the strong geomagnetic disturbance is associated with passage of magnetic cloud [3,4], which causes intense and sever geomagnetic storms [5,6].…”

Section: Introductionmentioning

confidence: 99%

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A Correlative Study of Geomagnetic Storms Associated with Solar Wind and IMF Features During Solar Cycle 23

Rathore¹,

Kaushik²,

Firoz³

et al. 2011

IJAPM

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Abstract-A geomagnetic storm is a global disturbance in Earth's magnetic field usually occurred due to abnormal conditions in the interplanetary magnetic field (IMF) and solar wind plasma emissions caused by various solar phenomenon. Furthermore the magnitude of these geomagnetic effects largely depend upon the configuration and strength of potentially geo-effective solar/interplanetary features. In the present study the identification of 220 geomagnetic storms associated with disturbance storm time (Dst) decrease of more than -50 nT to -300 nT, have been made, which are observed during 1996-2007, the time period spanning over solar cycle 23. The study is made statistically between the Dst strength (used as an indicator of the geomagnetic activity) and the peak value obtained by solar wind plasma parameters and IMF B as well as its components. We have used the hourly values of Dst index and the wind measurements taken by various satellites. Our results inferred that yearly occurrences of geomagnetic storms are strongly correlated with 11-year sunspot cycle. We observed that IMF B is highly geo-effective during the main phase of magnetic storms, while it more significant at the time of storm peak, which is further contributed by southward component of IMF Bz, substantiating earlier findings. The correlation between Dst and wind velocity is higher, as compared with IMF Bz and ion density. It has been verified that geomagnetic storm intensity is correlated well with the total magnetic field strength of IMF better than with its southward component.

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Section: Selection Criteria and Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Selection Criteria and Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Correlative Study of Geomagnetic Storms Associated with Solar Wind and IMF Features During Solar Cycle 23

Rathore¹,

Kaushik²,

Firoz³

et al. 2011

IJAPM

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The Earth’s Magnetosphere: A Systems Science Overview and Assessment

Borovsky

Valdivia

2018

Surv Geophys

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A systems science examination of the Earth’s fully interconnected dynamic magnetosphere is presented. Here the magnetospheric system (a.k.a. the magnetosphere–ionosphere–thermosphere system) is considered to be comprised of 14 interconnected subsystems, where each subsystem is a characteristic particle population: 12 of those particle populations are plasmas and two (the atmosphere and the hydrogen geocorona) are neutrals. For the magnetospheric system, an assessment is made of the applicability of several system descriptors, such as adaptive, nonlinear, dissipative, interdependent, open, irreversible, and complex. The 14 subsystems of the magnetospheric system are cataloged and described, and the various types of magnetospheric waves that couple the behaviors of the subsystems to each other are explained. This yields a roadmap of the connectivity of the magnetospheric system. Various forms of magnetospheric activity beyond geomagnetic activity are reviewed, and four examples of emergent phenomena in the Earth’s magnetosphere are presented. Prior systems science investigations of the solar-wind-driven magnetospheric system are discussed: up to the present these investigations have not accounted for the full interconnectedness of the system. This overview and assessment of the Earth’s magnetosphere hopes to facilitate (1) future global systems science studies that involve the entire interconnected magnetospheric system with its diverse time and spatial scales and (2) connections of magnetospheric systems science with the broader Earth systems science.

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Interaction of solar plasma near-Earth with reference to geomagnetic storms during maxima of solar cycle 24

Singh

Mishra

2015

Indian J Phys

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Solar wind-magnetosphere-ionosphere coupling and chaotic dynamics

Cited by 12 publications

References 102 publications

A Correlative Study of Geomagnetic Storms Associated with Solar Wind and IMF Features During Solar Cycle 23

A Correlative Study of Geomagnetic Storms Associated with Solar Wind and IMF Features During Solar Cycle 23

The Earth’s Magnetosphere: A Systems Science Overview and Assessment

Interaction of solar plasma near-Earth with reference to geomagnetic storms during maxima of solar cycle 24

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