Results 21 to 30 of about 7,649,591 (233)

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

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

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

DYNAMICS OF THE FIELD-ALIGNED CURRENTS DISTRIBUTION ASYMMETRY DURING SUBSTORMS IN THE EQUINOX SEASON

Solar-Terrestrial Physics, 2021
We continue to study the physical processes occurring during the August 17, 2001 magnetospheric storm by analyzing the dynamics of the intensity of field-aligned currents (FACs) in Iijima—Potemra Region 1 in the polar ionospheres of two hemispheres ...
V.V. Mishin, V.M. Mishin, M.A. Kurikalova   +2 more
doaj   +1 more source

Swarm Observations of Dawn/Dusk Asymmetries Between Pedersen Conductance in Upward and Downward Field‐Aligned Current Regions

Earth and Space Science, 2021
The locations of region 1 and 2 field‐aligned current systems were determined using fluxgate magnetometer measurements from 875 dawn‐dusk passes of the Swarm A satellite.
L. Olifer, C. Feltman, R. Ghaffari, S. Henderson, D. Huyghebaert, J. Burchill, A. N. Jaynes, D. Knudsen, K. McWilliams, J. I. Moen, A. Spicher, J. Wu   +11 more
doaj   +1 more source

Strong Nonideal Electric Fields and Energy Dissipation Observed by MMS within Field-Aligned Current Layers in the Plasma Sheet of the Earth’s Magnetotail

Atmosphere, 2023
We report the MMS observations of the intense spikes of field-aligned current (FAC) produced by magnetic reconnection at the plasma sheet (PS) field lines.
Makar V. Leonenko, Elena E. Grigorenko, Lev M. Zelenyi   +2 more
doaj   +1 more source

An examination of inter-hemispheric conjugacy in a subauroral polarization stream [PDF]

, 2012
During geomagnetically disturbed conditions the midlatitude ionosphere is subject to intense poleward directed electric fields in the dusk-midnight sector.
Kunduri, B. S. R., Clausen, L. B. N., Ruohoniemi, J. M., Freeman, M. P., Talaat, E. R., Baker, J. B. H., Thomas, E. G., Grocott, A.   +7 more
core   +6 more sources

SwarmFACE: A Python package for field-aligned currents exploration with Swarm

Frontiers in Astronomy and Space Sciences, 2023
The SwarmFACE package utilizes magnetic field measurements by the Swarm satellites to study systems of field-aligned currents (FACs). Improvements of well-established techniques as well as novel single- and multi-satellite methods or satellite ...
Adrian Blagau, Adrian Blagau, Joachim Vogt   +2 more
doaj   +1 more source

Timescales of Birkeland Currents Driven by the IMF

Geophysical Research Letters, 2019
We obtain current densities from the Active Magnetosphere and Planetary Electrodynamics Response Experiment (AMPERE), alongside By and Bz from the Interplanetary Magnetic Field (IMF) for March 2010.
John C. Coxon, Robert M. Shore, Mervyn P. Freeman, Robert C. Fear, Stephen D. Browett, Andrew W. Smith, Daniel K. Whiter, Brian J. Anderson   +7 more
doaj   +1 more source