Results 101 to 110 of about 18,451 (250)

Evidence for a Localized Burst of Relativistic Electrons Produced in Earth's Plasma Sheet During a Substorm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Earth's magnetotail and its plasma sheet are highly dynamic, influenced by both the solar wind and the inner magnetosphere. Periodically, energy is explosively released in the magnetotail during substorms. However, the extent to which electrons are accelerated in the magnetotail remains an open question, with recent observations revealing ...
M. Shumko, D. L. Turner, A. Y. Ukhorskiy, I. J. Cohen, G. K. Stephens, A. Artemyev, X. Zhang, C. Wilkins, E. Tsai, C. Gabrielse, S. Raptis, M. Sitnov, V. Angelopoulos   +12 more
wiley   +1 more source

Evolution of Anemone AR NOAA 10798 and the Related Geo-Effective Flares and CMEs

, 2008
We present a detailed examination of the features of the Active Region (AR) NOAA 10798. This AR generated coronal mass ejections (CMEs) that caused a large geomagnetic storm on 24 August 2005 with the minimum Dst index of -216 nT.
Alexander, Asai, Asai, Ayumi Asai, Bruzek, Delaboudiniére, Domingo, Forsyth, Gopalswamy, Gopalswamy, Gopalswamy, Gopalswamy, Gopalswamy, Gosling, Hale, Ishii, Kataoka, Kazunari Shibata, Ken'ichi Fujiki, Kojima, Kokubun, Kundu, Kurokawa, Lepping, Liu, Liu, Low, López Fuentes, Manoharan, Martin, Matsumoto, Mitsuo Oka, Mukai, Munro, Nagashima, Nat Gopalswamy, Rust, Ryuho Kataoka, Saito, Saito, Scherrer, Sheeley, Sheeley, Sheeley, Shibata, Shibata, Shibata, Takahashi, Takako T. Ishii, Terasawa, Tian, Tokumaru, Tokumaru, Tokumaru, Tousey, Verma, Vourlidas, Wang, Wang, Yashiro, Yokoyama, Yokoyama, Young, Zhang   +63 more
core   +1 more source

Satellites to study geomagnetic storms [PDF]

Eos, Transactions American Geophysical Union, 2007
NASA's Time History of Events and Macroscale Interactions during Substorms (THEMIS) mission to study geomagnetic substorms over the next two years launched on 17 February from Cape Canaveral Air Force Station, Fla. Substorms are visible in the atmosphere as a sudden brightening of polar auroral ribbons as they split and reorganize, and are thought to ...
openaire   +1 more source

Latitudinal and Hemispheric Responses of Solar Quiet Ionospheric Currents During Two Annular Solar Eclipses: Evidence From Low to Mid‐Latitude Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract A sudden drop in solar radiation during an annular (or total) eclipse directly affects ionospheric electrodynamics, primarily through the reduction of solar extreme ultraviolet (EUV) and soft X‐ray flux, which are responsible for generating the ionospheric plasma.
Charles Owolabi, Hyunju K. Connor, Don Hampton, V. Sai Gowtam, Dogacan Ozturk, Andrés Calabia, Amy M. Keesee   +6 more
wiley   +1 more source

Thermospheric Heating and Cooling Times During Geomagnetic Storms, Including Extreme Events [PDF]

We present the first quantitative calculations of thermospheric heating and cooling times for geomagnetic storms of different intensity, including extreme events.
Oliveira, Denny M., Zesta, Eftyhia
core   +1 more source

Modelling the effects of space weather at the Earth’s surface : a UK geoelectric field model [PDF]

, 2004
Geomagnetically Induced Currents (GIC), which can flow in technological systems such as power transmission grids, are a consequence of the geoelectric field induced at the surface of the Earth during geomagnetic storms.
Clarke, Ellen, McKay, Allan, Reay, Sarah, Thomson, Alan   +3 more
core  

The Contribution of Time Domain Structures to Electron Loss During the 17 March 2013 Geomagnetic Storm

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Ring current modeling has been a subject of active research in the last two decades. However, accurately modeling of this population of particles remains a challenge. Several recent studies have demonstrated that ring current models can overestimate the trapped electron flux in the 10–50 keV range by up to two orders of magnitude during ...
Katja Stoll, Yangyang Shen, Bernhard Haas, Leonie Pick, Dedong Wang, Yuri Shprits   +5 more
wiley   +1 more source

ULF Wave Modulation of Energetic Electron Precipitation Caused by the Self‐Limiting of Space Radiation: May 2024 Superstorm Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The May 2024 geomagnetic superstorm provided the opportunity to explore how strong wave‐particle interactions affect energetic electron precipitation under intense driving. Using coordinated measurements from a balloon‐borne Timepix‐based X‐ray detector, ground‐based riometers and magnetometers, and Arase satellite observations, we identified ...
L. Olifer, D. Zhou, M. Patel, I. R. Mann, M. K. Hudson, A. W. Degeling, C. O. Heinke, G. R. Sivakoff, A. Kale, S. Kasahara, S. Yokota, K. Keika, T. Hori, T. Mitani, T. Takashima, Y. Kasahara, S. Matsuda, A. Shinbori, A. Matsuoka, M. Teramoto, K. Yamamoto, I. Shinohara, Y. Miyoshi   +22 more
wiley   +1 more source

Localized Increment and Decrement in the Total Electron Content of the Ionosphere as a Response to the April 20, 2018, Geomagnetic Storm

International Journal of Geophysics, 2018
A moderate geomagnetic storm occurred on April 20, 2018. Using vertical total electron content (VTEC) maps provided by the Center for Orbit Determination in Europe, ionospheric responses to the geomagnetic storm could be identified in generated two ...
Carlos Sotomayor-Beltran
doaj   +1 more source

Joule Heating in the Northern Hemisphere During Geomagnetic Storms Driven by High‐Speed Streams and Coronal Mass Ejections

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract We present a robust method for estimating the auroral Joule heating in the northern hemisphere by combining SuperMAG, SuperDARN and AMPERE data products. This method is applied to 292 storms during 2010–2023. Temporal evolution and spatial distributions of the storm‐time Joule heating are studied using a superposed epoch analysis, with the ...
H. Vanhamäki, M. Pedersen, A. Aikio, C. Waters, J. Gjerloev, L. Cai, M. Myllymaa, B. Kunduri, K. Sterne, S. Vines, B. Anderson   +10 more
wiley   +1 more source