Results 151 to 160 of about 5,130 (219)

Energy Dependence of Energetic Electron Precipitation Rates Near the Foot of Electron Isotropy Boundary

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract We report a rare quiet‐time observation by NOAA‐18 spacecraft flying nearly along the electron isotropy boundary (IBe). Complemented by data from four nearby meridional IBe crossings of other POES spacecraft, this case study provides a novel quantitative information concerning the regular energy dependence of the loss‐cone filling ratio (Jprec/
V. A. Sergeev, A. R. Dibaeva, N. A. Stepanov, A. V. Artemyev, R. M. Millan, A. Y. Ukhorskiy   +5 more
wiley   +1 more source

Earthward Propagated Auroral Kilometric Radiation: Observations From Polar

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Auroral Kilometric Radiation (AKR), the strongest natural radio emission from Earth's magnetosphere, has been primarily observed in space. It is generally understood to propagate anti‐Earthward and be detected at large radial distances, while Earthward‐directed waves are thought to be blocked by the ionosphere. Surprisingly, AKR‐like emissions
Olha Melnychenko, Siyuan Wu, Daniel K. Whiter, Baptiste Cecconi, Claire Baskvetich   +4 more
wiley   +1 more source

The Drag of Ionosphere Plasma Drifts on Thermospheric Zonal Winds During the 10–12 May 2024 Superstorm

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract The observations from GRACE‐FO and DMSP satellites are utilized to analyze the ion‐neutral interaction near dusk during the 10–12 May 2024 super‐storm. The horizontal plasma convection dragged the anti‐sunward wind in the polar cap and sunward winds around the auroral and subauroral regions during whole storm times.
Ruilong Zhang, Libo Liu, Wenbo Li, Rongjin Du, Yuzhou Wang, Yiding Chen, Huijun Le   +6 more
wiley   +1 more source

First Observation of the Second Harmonic of Upper Band Chorus Waves Linking to Slow Z‐Mode

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract The Z‐mode, comprising fast and slow branches, is a ubiquitous electromagnetic wave in planetary magnetospheres. While fast Z‐mode generation is attributed to electron cyclotron maser instability, the slow Z‐mode mechanism remains unresolved.
Si Liu, Zhonglei Gao, Yaxiong Zhou, Hongming Yang, Fuliang Xiao, Archie James Johnston, Lixian Yang   +6 more
wiley   +1 more source

Green Emissions of Atomic Oxygen at Sprite Tops Explained

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Green emissions from excited Oxygen in Sprite Tops (GhOSTs) are due to the 557 nm photons emitted from atomic oxygen (O) $(\mathrm{O})$ excited to the 1S state. In this work we compare the possible contribution of various mechanisms for excitation of O(S1) $\mathrm{O}({}^{1}S)$ under application of a lightning‐induced electric field to the ...
Brandon Smith, Reza Janalizadeh, Victor P. Pasko   +2 more
wiley   +1 more source

Aurora-Associated Geomagnetic Activity and Health: A Review With Focus on Neurological Implications. [PDF]

Geohealth
Sethi Y, Vora V, Verma A, Bhatt R, Chaudhary MS, Chopra H, Greig NH.   +6 more
europepmc   +1 more source

Revealing the Formation of the <20 MeV Inner Proton Radiation Belt at L ∼ 2 During the 10–11 May 2024 Superstorm

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract A new proton radiation belt was identified during the geomagnetic superstorm of 10–11 May 2024. To investigate its origin, we use an MHD‐test particle simulation to model solar energetic proton (SEP) trapping and the evolution of the initial trapped proton population during the storm.
Murong Qin, Mary K. Hudson, Miles Engel, Brian T. Kress, Zhao Li, Maulik Patel, Wen Li, Kevin Pham, William R. Johnston, Xinlin Li, Shawn Young   +10 more
wiley   +1 more source

Association Between Geomagnetic Activity and Unsuccessful Out-of-Hospital Cardiac Arrest. [PDF]

Geohealth
Vencloviene J, Krikscionaitiene A, Darginavicius L, Baksevice D, Vaitkaitiene E, Vaitkaitis D, Dobozinskas P.   +6 more
europepmc   +1 more source

Open Magnetic Field Lines Partition Auroral Oval Segments Into Transpolar Arcs

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract Transpolar arcs (TPAs) are auroral structures spanning the polar cap. One type appears in conjugate hemispheres and is thought to be located on closed field lines, but how closed flux enters the open polar cap remains debated. We address this using observation and simulation of conjugate TPAs after an interplanetary magnetic field (IMF) By ...
Xin‐Ming Chen, Zan‐Yang Xing, Qing‐He Zhang, Hui‐Gen Yang, L. R. Lyons, K. Oksavik, Yong‐Liang Zhang, S. E. Milan, Xiang‐Yu Wang, Yu‐Zhang Ma, Yong Wang, Lu Sheng, Duan Zhang, Zhi‐Feng Xiu, Bian‐Long Zhao   +14 more
wiley   +1 more source

Models of the normal geomagnetic field in the Republic of Macedonia

, 2012
The paper presents the explorations of the normal geomagnetic field for the period 1990- 2010. The models are made for the elements of the normal geomagnetic field for the epochs 1990, 2005 and 2010.
Delipetrev, Marjan, Delipetrov, Todor, Doneva, Blagica, Delipetrev, Blagoj   +3 more
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