Statistical azimuthal structuring of the substorm onset arc: implications for the onset mechanism
Sign Up to like & getrecommendations! Published in 2017 at "Geophysical Research Letters"
DOI: 10.1002/2016gl071826
Abstract: The onset of an auroral substorm is generally thought to occur on a quiet, homogeneous auroral arc. We present a statistical study of independently selected substorm onset arcs and find that over 90% of the… read more here.
Keywords: substorm onset; statistical azimuthal; azimuthal structuring; substorm ... See more keywords
Direct observation of generation and propagation of magnetosonic waves following substorm injection
Sign Up to like & getrecommendations! Published in 2017 at "Geophysical Research Letters"
DOI: 10.1002/2017gl074362
Abstract: Magnetosonic whistler mode waves play an important role in the radiation belt electron dynamics. Previous theory has suggested that these waves are excited by the ring distributions of hot protons and can propagate radially and… read more here.
Keywords: waves following; magnetosonic waves; following substorm; substorm ... See more keywords
27 August 2001 substorm: Preonset phenomena, two main onsets, field‐aligned current systems, and plasma flow channels in the ionosphere and in the magnetosphere
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2017ja023915
Abstract: We supplement the results of the 27 August 2001 substorm studied earlier in the series of papers. Described is the plasma flow in the nightside ionosphere from the near-polar region from the polar cap to… read more here.
Keywords: 2001 substorm; plasma flow; substorm preonset; substorm ... See more keywords
The Mid-Latitude Positive Bay and the MPB Index of Substorm Activity
Sign Up to like & getrecommendations! Published in 2017 at "Space Science Reviews"
DOI: 10.1007/s11214-016-0316-6
Abstract: Substorms are a major source of magnetic activity. At substorm expansion phase onset a westward current flows through the expanding aurora. This current is the ionospheric closure of the substorm current wedge produced by diversion… read more here.
Keywords: index; bay; field; mpb index ... See more keywords
Tailward Propagation of Magnetic Energy Density Variations With Respect to Substorm Onset Times
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Geophysical Research"
DOI: 10.1029/2017ja025147
Abstract: During geomagnetic substorms, around 1015 J of energy is extracted from the solar wind and processed by the Earth's magnetosphere. Prior to the onset of substorm expansion phases, this energy is thought to be largely… read more here.
Keywords: onset; energy; substorm; energy density ... See more keywords
Using Multiple Signatures to Improve Accuracy of Substorm Identification
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Geophysical Research"
DOI: 10.1029/2019ja027559
Abstract: We have developed a new procedure for combining lists of substorm onset times from multiple sources. We apply this procedure to observational data and to magnetohydrodynamic (MHD) model output from... read more here.
Keywords: accuracy substorm; improve accuracy; using multiple; substorm ... See more keywords
A ConvLSTM‐Based Prediction Model of Aurora Evolution During the Substorm Expansion Phase
Sign Up to like & getrecommendations! Published in 2023 at "Earth and Space Science"
DOI: 10.1029/2022ea002721
Abstract: Aurora is an important manifestation of solar‐terrestrial physical processes. The aurora activities have rapid changes in spatial and intensity distribution during a substorm, especially the expansion phase. In this paper, a newly developed aurora evolution… read more here.
Keywords: substorm; expansion phase; aurora evolution; model ... See more keywords
Variation of Plasma Pressure at the Auroral Oval Latitudes before, during, and after the Isolated Geomagnetic Substorm on December 22, 2008
Sign Up to like & getrecommendations! Published in 2020 at "Geomagnetism and Aeronomy"
DOI: 10.1134/s0016793220040131
Abstract: The change in plasma pressure at the latitudes of the auroral oval before, during, and after the isolated geomagnetic substorm on December 22, 2008, were studied using data from the F13, 15, 16, and 17… read more here.
Keywords: isolated geomagnetic; auroral oval; substorm; pressure ... See more keywords
Using ultra-low frequency waves and their characteristics to diagnose key physics of substorm onset
Sign Up to like & getrecommendations! Published in 2017 at "Geoscience Letters"
DOI: 10.1186/s40562-017-0089-0
Abstract: Substorm onset is marked in the ionosphere by the sudden brightening of an existing auroral arc or the creation of a new auroral arc. Also present is the formation of auroral beads, proposed to play… read more here.
Keywords: substorm onset; frequency; ultra low; physics ... See more keywords
Evolution of field-aligned current in the meridional plane during substorm: multipoint observations from satellites and ground stations
Sign Up to like & getrecommendations! Published in 2020 at "Earth, Planets and Space"
DOI: 10.1186/s40623-020-01182-6
Abstract: We report the propagation of substorm-associated magnetic fluctuations by multipoint magnetic observations from ground and space in the same meridional plane. The first Quasi-Zenith Satellite (QZS-1), which has a unique orbit of quasi-zenith orbit with… read more here.
Keywords: field; field aligned; time; meridional plane ... See more keywords