Results 1 to 10 of about 22,874 (214)

Dissipation of field-aligned currents in the topside ionosphere. [PDF]

Sci Rep, 2022
AbstractField-aligned currents (FACs) are electric currents parallel to the geomagnetic field and connecting the Earth’s magnetosphere to the high-latitude ionosphere. Part of the energy injected into the ionosphere by FACs is converted into kinetic energy of the surrounding plasma.
Giannattasio F, Consolini G, Coco I, De Michelis P, Pezzopane M, Pignalberi A, Tozzi R.   +6 more
europepmc   +4 more sources

Transient, small-scale field-aligned currents in the plasma sheet boundary layer during storm time substorms. [PDF]

Geophys Res Lett, 2016
Nakamura R, Sergeev VA, Baumjohann W, Plaschke F, Magnes W, Fischer D, Varsani A, Schmid D, Nakamura TK, Russell CT, Strangeway RJ, Leinweber HK, Le G, Bromund KR, Pollock CJ, Giles BL, Dorelli JC, Gershman DJ, Paterson W, Avanov LA, Fuselier SA, Genestreti K, Burch JL, Torbert RB, Chutter M, Argall MR, Anderson BJ, Lindqvist PA, Marklund GT, Khotyaintsev YV, Mauk BH, Cohen IJ, Baker DN, Jaynes AN, Ergun RE, Singer HJ, Slavin JA, Kepko EL, Moore TE, Lavraud B, Coffey V, Saito Y.   +41 more
europepmc   +2 more sources

A Third Generation Field‐Aligned Current Model [PDF]

Journal of Geophysical Research: Space Physics, 2020
AbstractA new empirical model of field‐aligned currents in the Earth's ionosphere has been developed. This model is derived using magnetometer data from the CHAallenging Minisatellite Payload, Ø rsted, and Swarm satellite missions, which has created a database that spans more than 15 years.
Edwards, T., Weimer, D., Olsen, N., Lühr, H., Tobiska, W., Anderson, B.   +5 more
openaire   +3 more sources

Field-aligned and ionospheric currents [PDF]

Planetary and Space Science, 1975
Abstract Zmuda and Armstrong (1974) showed that the field-aligned currents consist of two pairs; one is located in the morning sector and the other in the evening sector. Our analysis of magnetic records from the TRIAD satellite suggests that in each pair the poleward field-aligned current is more intense than the equatorward current, a typical ratio
F. Yasuhara, Y. Kamide, S.-I. Akasofu
openaire   +1 more source

Effect of Interhemispheric Field-Aligned Currents on Region-1 Currents [PDF]

Geophysical Research Letters, 2014
Wladislaw Lyatsky, George V Khazanov
exaly   +2 more sources

Current carriers for the field-aligned current system [PDF]

Advances in Space Research, 1985
The Dynamics Explorer satellites have returned a large body of data containing high resolution magnetometer measurements and distributions of charged particles of all but thermal electrons. From these data the relations of the field aligned currents to particle precipitation structures were investigated and the charge carriers were identified.
R.A. Hoffman, M. Sugiura, N.C. Maynard
openaire   +1 more source

Multipoint Field‐Aligned Current Estimates With Swarm [PDF]

Journal of Geophysical Research: Space Physics, 2019
AbstractField‐aligned currents (FACs) are a key component of the magnetosphere‐ionosphere system, providing the transfer of energy and momentum between the distant collision‐free magnetospheric plasma and the collisional ionosphere. The European Space Agency's Swarm mission offers a unique opportunity to explore the FACs low‐altitude end by a broad ...
A. Blagau, J. Vogt
openaire   +2 more sources

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

STARE: Observations of a field‐aligned line current

Geophysical Research Letters, 1999
For the first time a magnetospheric line current entering the ionosphere has been unambiguously observed. The observation was made with STARE ( = Scandinavian Twin Auroral Radar Experiment), a ground based coherent radar system, which has been updated with modern computer technique, and recently taken into operation.
Nielsen, E., Bruns, M., Pardowitz, I., Perplies, H., Bemmann, L., Janhunen, P., Huuskonen, A.   +6 more
openaire   +2 more sources

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