Results 21 to 30 of about 24,672 (257)

Field‐aligned current response to solar indices [PDF]

Journal of Geophysical Research: Space Physics, 2017
AbstractMagnetometer data from three satellite missions have been used to analyze and identify the effects of varying solar radiation on the magnitudes and locations of field‐aligned currents in the Earth's upper atmosphere. Data from the CHAMP, Ørsted, and Swarm satellite missions have been brought together to provide a database spanning a 15 year ...
Thom R. Edwards, D. R. Weimer, W. K. Tobiska, Nils Olsen   +3 more
openaire   +2 more sources

Storm time field-aligned currents and magnetosphere-ionosphere coupling process

地球与行星物理论评, 2022
Field aligned currents (FACs), also known as Birkland current, are flowing along the magnetic field line between the ionosphere and magnetosphere. They play an essential role in transferring mass, energy, and momentum from the magnetosphere to the ...
Hui Wang
doaj   +1 more source

Determination of Auroral Electrodynamic Parameters From AMPERE Field‐Aligned Current Measurements

Space Weather, 2021
We calculate high latitude electrodynamic parameters using global maps of field‐aligned currents from the Active Magnetosphere and Planetary Response Experiment (AMPERE).
R. M. Robinson, Larry Zanetti, Brian Anderson, Sarah Vines, Jesper Gjerloev   +4 more
doaj   +1 more source

Kelvin-Helmholtz Vortices as an Interplay of Magnetosphere-Ionosphere Coupling

Frontiers in Astronomy and Space Sciences, 2022
The solar wind-magnetosphere interaction drives diverse physical processes on the flanks of Earth’s magnetopause, and in turn these processes couple to the ionosphere.
K.-J. Hwang, J. M. Weygand, D. G. Sibeck, J. L. Burch, M. L. Goldstein, C. P. Escoubet, E. Choi, K. Dokgo, B. L. Giles, C. J. Pollock, D. J. Gershman, C. T. Russell, R. J. Strangeway, R. B. Torbert   +13 more
doaj   +1 more source

Determination of vertical profiles of shell currents in the ionosphere [PDF]

Annales Geophysicae
In previous works, we found Euler potentials for the combined magnetic field of Earth's dipole, field-aligned currents, ring current, and the magnetopause surface currents (represented by Dungey's term) in the magnetosphere.
E. Romashets, M. Vandas
doaj   +1 more source

Filamentary Alfvénic structures excited at the edges of equatorial plasma bubbles [PDF]

Annales Geophysicae, 2007
Recent observations performed by the French DEMETER satellite at altitudes of about 710 km suggest that the generation of equatorial plasma bubbles correlates with the presence of filamentary structures of field aligned currents carried by Alfvén ...
R. Pottelette, M. Malingre, J. J. Berthelier, E. Seran, M. Parrot   +4 more
doaj   +1 more source

Comparing magnetopause predictions from two MHD models during a geomagnetic storm and a quiet period

Frontiers in Astronomy and Space Sciences, 2023
Magnetopause location is an important prediction of numerical simulations of the magnetosphere, yet the models can err, either under-predicting or over-predicting the motion of the boundary.
Pauline M. Dredger, Ramon E. Lopez, Yaireska M. Collado-Vega   +2 more
doaj   +1 more source

Relationship between large-scale ionospheric field-aligned currents and electron/ion precipitations: DMSP observations

Earth, Planets and Space, 2020
In this study, we have derived field-aligned currents (FACs) from magnetometers onboard the Defense Meteorological Satellite Project (DMSP) satellites.
Chao Xiong, Claudia Stolle, Patrick Alken, Jan Rauberg   +3 more
doaj   +1 more source

On the role of neutral flow in field-aligned currents [PDF]

Annales Geophysicae, 2018
In this brief note we explore the role of the neutral atmosphere in magnetosphere–ionosphere coupling. We analyze momentum balance in the ion rest frame to form hypotheses regarding the role of neutral momentum in the lower ionosphere during ...
A. J. Mannucci, O. P. Verkhoglyadova, X. Meng, R. McGranaghan, R. McGranaghan   +4 more
doaj   +1 more source

Multiscale field‐aligned current analyzer [PDF]

Journal of Geophysical Research: Space Physics, 2015
AbstractThe magnetosphere‐ionosphere coupling is achieved, essentially, by a superposition of quasi‐stationary and time‐dependent field‐aligned currents (FACs), over a broad range of spatial and temporal scales. The planarity of the FAC structures observed by satellite data and the orientation of the planar FAC sheets can be investigated by the well ...
C. Bunescu, O. Marghitu, D. Constantinescu, Y. Narita, J. Vogt, A. Blăgău   +5 more
openaire   +1 more source