Results 61 to 70 of about 13,189 (224)

Formation of Secondary Structures Associated With the Gradient Drift Instability in the High‐Latitude Ionosphere

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract The gradient drift instability (GDI) commonly occurs in the high‐latitude ionosphere and is widely recognized for producing elongated striation structures. While previous studies have established the linear growth and primary nonlinear development of striations, the formation of secondary structures remains not fully understood.
Yusha Tan, Jiuhou Lei, Maodong Yan
wiley   +1 more source

Recent results and outstanding questions on the response of the electrodynamics of the low latitude ionosphere to solar wind and magnetospheric disturbances

Frontiers in Astronomy and Space Sciences
Storm-time ionospheric electrodynamics effects have been the subject of extensive studies. The solar wind/magnetosphere/ionosphere and thermosphere disturbance wind dynamos have long been identified as the main drivers of low latitude storm-time ...
Bela G. Fejer, Luis A. Navarro, Dibyendu Chakrabarty   +2 more
doaj   +1 more source

Assessment of the Impact of Geomagnetic Disturbances on Korean Electric Power Systems

Energies, 2018
Geomagnetic disturbances have the potential to impact the operation of electric power systems, and thus the assessment of their impacts is required as the first step for secure power system operations.
Byoung-Soo Joo, Jung-Wook Woo, Jeong-Hun Lee, Injoo Jeong, Jungmin Ha, Se-Hee Lee, Soobae Kim   +6 more
doaj   +1 more source

A Study of the Morphology of Magnetic Storms: Moderate Magnetic Storms [PDF]

, 1957
Some average characteristics are determined for 136 moderate magnetic storms with sudden commencements that occurred during the interval 1902-1945.
Chapman, Sydney, Sugiura, Masahisa
core  

Oxygen and hydrogen ion abundance in the near-Earth magnetosphere: Statistical results on the response to the geomagnetic and solar wind activity conditions

, 2012
The composition of ions plays a crucial role for the fundamental plasma properties in the terrestrial magnetosphere. We investigate the oxygen-to-hydrogen ratio in the near-Earth magnetosphere from -10 RE274 keV O+ ion intensities, relative to the ...
Daly, Patrick W., Dandouras, Iannis, Fränz, Markus, Grigorenko, Elena E., Haaland, Stein E., Kistler, Lynn, Kronberg, Elena A.   +6 more
core   +1 more source

Reconstructing the Geometry of a Hot Flow Anomaly With Bounding Jets in Magnetosheath

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract When interplanetary magnetic field discontinuities interact with planetary bow shocks, hot flow anomalies (HFAs) form in the solar wind and can extend into the magnetosheath. Here we reconstruct the three‐dimensional geometry of an HFA bounded by two jet regions in the terrestrial magnetosheath.
Yufei Zhou, Boyi Wang, Savvas Raptis, Shan Wang, Jin Guo, Jih‐Hong Shue, David Sibeck, Quanming Lu, Jiamei Zhang, Chao Shen, Rungployphan Kieokaew, C. Philippe Escoubet, Peng Shao, James Burch   +13 more
wiley   +1 more source

Modeling and Risk Assessment of Geomagnetically Induced Currents During Geomagnetic Storm in the 500 kV Power Grid of Guangxi, China

Space Weather
Geomagnetic storms can induce geomagnetically induced currents (GIC) in power systems, posing threats to grid security. In this study, a GIC calculation model for the 500 kV power grid in Guangxi, China, is developed based on one‐dimensional (1D) and ...
Xuejian Zhang, Gilbert Pi, Zdeněk Němeček, Jana Šafránková, Tianqi Wang, Wenxin Kong, Chang Wei, Nian Yu   +7 more
doaj   +1 more source

Geomagnetic disturbances analysis using discrete wavelets

Geofísica Internacional, 2008
Para estudiar periodicidades y tendencia en tormentas geomagnéticas se aplicó la transformada wavelet discreta, usando la función Daubechies. De entre una variedad de técnicas disponibles para analizar variabilidad, el análisis wavelets ha surgido en la última década como una herramienta estadística útil para este propósito.
Zossi Artigas, Marta Maria, Fernández de Campra, Patricia, Zotto, Elda Marina   +2 more
openaire   +5 more sources

Statistical Characteristics of Stormtime Bursty Bulk Flows

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Bursty bulk flows (BBFs) play a significant role in transporting plasma earthward in the magnetotail. While their properties have been extensively studied, their behavior during geomagnetic storms needs further understanding. In this study, we investigate the stormtime characteristics of BBFs, and compare them to non‐stormtime, by performing a
Anusree P. Devanandan, Amy Keesee, Savvas Raptis, Shinichi Ohtani, Viacheslav Merkin, Matina Gkioulidou   +5 more
wiley   +1 more source

Spremembe v gostoti energije magnetnega polja Zemlje na observatoriju PIA, Slovenija, med geomagnetno nevihto G5 11. maja 2024 (= Changes in the energy density of the Earth's magnetic field at the PIA, Slovenia, observatory during the G5 Geomagnetic Storm on May 11, 2024)

Geodetski Vestnik
Geomagnetic storms are the largest disturbance in the Earth's magnetic field. On May 11, 2024, a geomagnetic storm occurred at the peak of the 25th solar cycle, reaching the highest level (G5) on the planetary scale.
Rudi Čop
doaj   +1 more source