Low-latitude variations in the geomagnetic field caused by solar wind disturbances

In view of the actual question regarding the effect of a solar-wind pressure jump on disturbances in the Earth’s magnetosphere, events with high velocity and density gradients are of special interest. In this work, we consider the response of the current at the dayside magnetopause to these events a...

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Vydáno v:Geomagnetism and Aeronomy Ročník 54; číslo 4; s. 445 - 448
Hlavní autoři: Belenkaya, E. S., Parunakian, D. A., Alekseev, I. I., Kalegaev, V. V., Blokhina, M. S., Grigoryan, M. S.
Médium: Journal Article
Jazyk:angličtina
Vydáno: Moscow Pleiades Publishing 01.07.2014
Springer Nature B.V
Témata:
Aeronomy
Density
Disturbances
Earth and Environmental Science
Earth magnetosphere
Earth Sciences
Geomagnetic field
Geomagnetic fields
Geophysics
Geophysics/Geodesy
Magnetic fields
Magnetospheres
Mathematical analysis
Solar physics
Solar wind
Wind pressure
Wind speed
Solar Wind Dynamic Pressure
Solar Wind Density
Solar Wind Parameter
Solar Wind
Solar Wind Velocity
ISSN:0016-7932, 1555-645X, 0016-7940
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Popis
Shrnutí:In view of the actual question regarding the effect of a solar-wind pressure jump on disturbances in the Earth’s magnetosphere, events with high velocity and density gradients are of special interest. In this work, we consider the response of the current at the dayside magnetopause to these events and the corresponding strengthening of the geomagnetic field in the low-latitude magnetosphere. A transient process is studied that accompanies reconfiguration of the magnetosphere under the effect of disturbances of solar wind parameters. An analytical equation is received for estimation of an increase in the northern component of low-latitude magnetic field of the magnetosphere in a transient current system (transient ring current) versus initial values of the solar-wind velocity and density and their disturbances.
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ISSN:0016-7932
1555-645X
0016-7940
DOI:10.1134/S0016793214040070