Results 71 to 80 of about 4,955 (149)

Another way of deriving the ring current decay time during disturbed periods

Annals of Geophysics, 1995
Coupling parameter, E, and the total energy dissipated by the magnetosphere, UT, are determined for six disturbed periods, following three known criteria for UT computation.
J. R. Manzano, M. M. Zossi de Artigas
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

Energetic electron precipitation during sawtooth injections [PDF]

, 2007
International audienceWe present simultaneous riometer observations of cosmic noise absorption in the nightside and dawn-noon sectors during sawtooth particle injections during 18 April 2002.
Donovan, E. F., Reeves, G. D., Immel, T. J., T. J. Immel, Honary, F., Manninen, J., G. D. Reeves, Lu, G., Kavanagh, A. J., A. J. Kavanagh, F. Honary, J. Manninen, E. F. Donovan, G. Lu   +13 more
core   +2 more sources

Evolution of Open Magnetic Flux During Substorms: The Effects of Dipole Tilt Angle

Geophysical Research Letters
There is a long‐standing debate on the causes of the semiannual variation of geomagnetic activity. One of the prevailing hypotheses is that the Earth's dipole tilt angle Ψ modulates the dayside reconnection rate, causing the so‐called equinoctial effect.
A. Nair, L. Holappa, H. Vanhamäki, S. E. Milan   +3 more
doaj   +1 more source

Enhancement of Dayside Westward Electrojet: Triggering Conditions and Current Closures

Geophysical Research Letters
Geomagnetic substorms are a major path for energy storage and release in the magnetosphere, which typically occur in the midnight sector with a strong enhancement of westward electrojets. However, by analyzing 37,940 events from a substorm list, about 3%
Haobo Fu, Chao Yue, Dedong Wang, Qiugang Zong, Huiting Feng, Yuri Shprits   +5 more
doaj   +1 more source

A Perspective on Substorm Dynamics Using 10 Years of Auroral Kilometric Radiation Observations From Wind. [PDF]

J Geophys Res Space Phys, 2022
Waters JE, Jackman CM, Whiter DK, Forsyth C, Fogg AR, Lamy L, Cecconi B, Bonnin X, Issautier K.   +8 more
europepmc   +1 more source

Network community structure of substorms using SuperMAG magnetometers. [PDF]

Nat Commun, 2021
Orr L, Chapman SC, Gjerloev JW, Guo W.
europepmc   +1 more source

Large regional variability in geomagnetic storm effects in the auroral zone. [PDF]

Sci Rep, 2023
Kärhä O, Tanskanen EI, Vanhamäki H.
europepmc   +1 more source

A telescopic and microscopic examination of acceleration in the June 2015 geomagnetic storm: Magnetospheric Multiscale and Van Allen Probes study of substorm particle injection

Geophysical Research Letters, 2016
An active storm period in June 2015 showed that particle injection events seen sequentially by the four (Magnetospheric Multiscale) MMS spacecraft subsequently fed the enhancement of the outer radiation belt observed by Van Allen Probes mission sensors ...
D. N. Baker, A. N. Jaynes, D. L. Turner, R. Nakamura, D. Schmid, B. H. Mauk, I. J. Cohen, J. F. Fennell, J. B. Blake, R. J. Strangeway, C. T. Russell, R. B. Torbert, J. C. Dorelli, D. J. Gershman, B. L. Giles, J. L. Burch   +15 more
doaj   +1 more source

Causality and Information Transfer Between the Solar Wind and the Magnetosphere-Ionosphere System. [PDF]

Entropy (Basel), 2021
Manshour P, Balasis G, Consolini G, Papadimitriou C, Paluš M.   +4 more
europepmc   +1 more source