Results 51 to 60 of about 320,647 (167)

IMF By‐Controlled Dawn–Dusk and Hemispheric Asymmetries of Kelvin–Helmholtz Waves and Reconnection Geometry Under Negative Dipole Tilt

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Along with magnetic reconnection, Kelvin‐Helmholtz (KH) waves are the main mechanisms controlling the solar wind‐magnetosphere interaction, enabling plasma transport into the magnetosphere due to secondary reconnection, diffusion and wave‐particle interactions.
L. Holappa, K. Nykyri, J. Laitinen, B. Burkholder   +3 more
wiley   +1 more source

Distribution of Region 1 and 2 currents in the quiet and substorm time plasma sheet from THEMIS observations

Geophysical Research Letters, 2016
Although Earth's Region 1 and 2 currents are related to activities such as substorm initiation, their magnetospheric origin remains unclear. Utilizing the triangular configuration of THEMIS probes at 8–12 RE downtail, we seek the origin of nightside ...
Jiang Liu, V. Angelopoulos, Xiangning Chu, R. L. McPherron   +3 more
doaj   +1 more source

Field‐Aligned Anisotropy of Electrons in Magnetic Hole Behind the Dipolarization Front in the Flow Braking Region

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract Magnetic holes (MHs) are magnetic structures characterized by a depression of magnetic field strength and have been frequently observed around dipolarization fronts (DFs), which are characterized by the increase in the magnetic field Bz. Both MHs and DFs are potential contributors to the formation of electron anisotropy.
Y. Y. Wei, S. Y. Huang, K. Jiang, Z. G. Yuan, Q. Y. Xiong, S. H. Li   +5 more
wiley   +1 more source

Whistler mode waves and Hall fields detected by MMS during a dayside magnetopause crossing

Geophysical Research Letters, 2016
We present Magnetospheric Multiscale (MMS) mission measurements during a full magnetopause crossing associated with an enhanced southward ion flow. A quasi‐steady magnetospheric whistler mode wave emission propagating toward the reconnection region with ...
O. Le Contel, A. Retinò, H. Breuillard, L. Mirioni, P. Robert, A. Chasapis, B. Lavraud, T. Chust, L. Rezeau, F. D. Wilder, D. B. Graham, M. R. Argall, D. J. Gershman, P.‐A. Lindqvist, Y. V. Khotyaintsev, G. Marklund, R. E. Ergun, K. A. Goodrich, J. L. Burch, R. B. Torbert, J. Needell, M. Chutter, D. Rau, I. Dors, C. T. Russell, W. Magnes, R. J. Strangeway, K. R. Bromund, H. K. Leinweber, F. Plaschke, D. Fischer, B. J. Anderson, G. Le, T. E. Moore, C. J. Pollock, B. L. Giles, J. C. Dorelli, L. Avanov, Y. Saito   +38 more
doaj   +1 more source

Modeling Storm‐Time Post‐Midnight Equatorial Plasma Bubbles With SAMI3‐WACCMX: Impacts of Neutral Winds, Thermospheric Composition, and Atmospheric Waves

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract This study investigates the roles of neutral winds, composition and atmospheric waves in storm‐time post‐midnight equatorial plasma bubble (EPB) development using the coupled SAMI3‐WACCMX model. Simulations reveal the formation of post‐midnight EPBs extending beyond 1,500 km in altitude and persisting into the post‐sunrise period.
Min‐Yang Chou, J. D. Huba, Jack Wang, Jia Yue, Maksym Petrenko   +4 more
wiley   +1 more source

Rotational modulation and local time dependence of Saturn's infrared H3+ auroral intensity [PDF]

, 2012
Planetary auroral emissions reveal the configuration of magnetospheric field-aligned current systems. In this study, Cassini Visual and Infrared Mapping Spectrometer (VIMS) observations of Saturn's pre-equinox infrared H3+ aurorae were analysed to show ...
Baines, K. H., Badman, S. V., Kimura, T., Tao, C., Lamy, L., Stallard, T., Provan, G., Fujimoto, M., Andrews, D. J., Melin, H., Kasahara, S., Brown, R. H., Cowley, S. W. H.   +12 more
core   +3 more sources

An electric circuit model of the Earth’s polar electrojets and field-aligned currents for the estimation of magnetospheric magnetic field from along-track Swarm magnetic data

Earth, Planets and Space, 2022
This study deals with the analysis of Swarm vector magnetic data in order to create a circuit model of electric currents flowing in the Earth’s polar ionosphere and the inner magnetosphere.
Zdeněk Martinec, Jakub Velímský
doaj   +1 more source

Oxygen Pickup Acceleration in the Plasma Mantle Associated With Traveling Flux‐Rope Structures

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract It is well known that, in the high‐altitude cusp and mantle regions, ionospheric‐origin outflowing oxygen (O+) ions are often energized through non‐adiabatic processes, among which cyclotron resonance is considered a major mechanism. Here, based on Cluster observations, we present evidence that pickup acceleration also operates as a non ...
H. Koike, M. Yamauchi, S. Taguchi, H. Nilsson, I. Dandouras   +4 more
wiley   +1 more source

Substorm Effects on Chorus Emissions Modulated by ULF Waves

Geophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Although cross‐scale wave‐particle interactions play a critical role in energy transfer in the magnetosphere, the influence of geomagnetic activity on the physical mechanisms involved remains unclear. In this study, we investigate this question by analyzing Van Allen Probes‐A observations of an event occurring on 25 July 2016.
Xing‐Yu Li, Qiu‐Gang Zong, Shan Wang, Xu‐Zhi Zhou, Chao Yue, Robert Rankin, Li Li, Yong‐Fu Wang, Yi‐Xin Sun, Hua‐Yun Shen, Bin He, Yong Wu   +11 more
wiley   +1 more source

Separatrix regions of magnetic reconnection at the magnetopause [PDF]

Annales Geophysicae, 2009
Using data from the four Cluster spacecraft we study the separatrix regions of magnetic reconnection sites at the dayside magnetopause under conditions when reconnection is occurring in the magnetopause current layer which separates magnetosheath ...
T. Lindstedt, T. Lindstedt, Yu. V. Khotyaintsev, A. Vaivads, M. André, R. C. Fear, B. Lavraud, S. Haaland, S. Haaland, C. J. Owen   +9 more
doaj   +1 more source