Results 51 to 60 of about 9,187 (202)

The dayside ultraviolet aurora and convection responses to a southward turning of the interplanetary magnetic field [PDF]

open access: yesAnnales Geophysicae, 2001
We examine the large-scale ultraviolet aurora and convection responses to a series of flux transfer events that immediately followed a sharp and isolated southward turning of the IMF.
K. A. McWilliams   +4 more
doaj   +1 more source

Effect of convection vortices on the ionosphere

open access: yesAdvances in Space Research, 1998
Abstract Traveling convection vortices are spatially localized, transient structures embedded in a large-scale convection pattern. They are typically aligned in the east-west direction, have a horizontal extent of 500–1000 km, appear in either the dawn or dusk sectors at about 70° latitude, and then propagate toward midnight at a speed of from 0.5–15
Schunk, Robert W.   +2 more
openaire   +2 more sources

Stellar wind-magnetosphere interaction at exoplanets: computations of auroral radio powers

open access: yes, 2016
We present calculations of the auroral radio powers expected from exoplanets with magnetospheres driven by an Earth-like magnetospheric interaction with the solar wind.
Milan, S. E., Nichols, J. D.
core   +1 more source

Development of the Chinese Dual Auroral Radar Network and Preliminary Results

open access: yesSpace Weather
Led by the National Space Science Center of the Chinese Academy of Sciences, we have built a Chinese dual auroral radar network in northern China, which is called the CN‐DARN.
Jiaojiao Zhang   +9 more
doaj   +1 more source

Quantifying Contributions of External Drivers to the Global Ionospheric State

open access: yesSpace Weather, 2021
To advance our understanding of the global response of the ionospheric total electron content (TEC) to various external drivers, we apply entropy‐based information theory to quantify contributions of solar, interplanetary, and lower atmospheric drivers ...
Xing Meng, Olga P. Verkhoglyadova
doaj   +1 more source

Multi-site observations of the association between aurora and plasma convection in the cusp/polar cap during a southeastward(By ~ |Bz|) IMF orientation [PDF]

open access: yesAnnales Geophysicae, 2003
In a case study we demonstrate the spatiotemporal structure of aurora and plasma convection in the cusp/polar cap when the interplanetary magnetic field (IMF) Bz < 0 and By ~ | Bz | (clock angle in GSM Y - Z plane: ~ 135°). This IMF orientation
P. E. Sandholt   +8 more
doaj   +1 more source

Seasonal effects in the ionosphere-thermosphere response to the precipitation and field-aligned current variations in the cusp region [PDF]

open access: yesAnnales Geophysicae, 1998
The seasonal effects in the thermosphere and ionosphere responses to the precipitating electron flux and field-aligned current variations, of the order of an hour in duration, in the summer and winter cusp regions have been investigated using the ...
A. A. Namgaladze   +4 more
doaj   +1 more source

Ionospheric convection during nonsteady interplanetary magnetic field conditions [PDF]

open access: yesJournal of Geophysical Research: Space Physics, 1997
We investigate six cases in which the interplanetary magnetic field (IMF) orientation is changing. The assimilative mapping of ionospheric electrodynamics (AMIE) technique is used to compute the ionospheric electric potential in a 5‐min time step over the nonsteady periods.
Ridley, A.J.   +3 more
openaire   +2 more sources

Cold ions of ionospheric origin observed at the dayside magnetopause and their effects on magnetic reconnection [PDF]

open access: yes, 2015
Thesis (Ph.D.) University of Alaska Fairbanks, 2015Magnetic reconnection at the dayside magnetopause is one of the most important mechanisms that efficiently transfers solar wind particles, momentum, and energy into the magnetosphere.
Lee, Sun-Hee, 이, 선희
core  

The role of the Hall effect in the global structure and dynamics of planetary magnetospheres: Ganymede as a case study [PDF]

open access: yes, 2015
We present high resolution Hall MHD simulations of Ganymede's magnetosphere demonstrating that Hall electric fields in ion-scale magnetic reconnection layers have significant global effects not captured in resistive MHD simulations. Consistent with local
Collinson, Glyn   +3 more
core   +1 more source

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