Results 81 to 90 of about 18,323 (219)

Statistical characteristics of geomagnetic storm activity during solar cycle 24, 2009–2020

open access: yesВісник Харківського національногоуніверситету імені В.Н. Каразіна. Серія: Радіофізика та електроніка, 2020
Urgency. The atmosphere and geospace are widely used as a radio channel in solving problems of radar, radio navigation, direction finding, radio communication, radio astronomy, and the remote sensing of the Earth from space or the near-earth environment ...
L. F. Chornogor, M. Yu. Holub, Y. Luo
doaj   +1 more source

Occurrence rate of extreme magnetic storms

open access: yes, 2012
Statistical analysis of occurrence rate of magnetic storms induced by different types of interplanetary drivers is made on the basis of OMNI data for period 1976-2000.
Lodkina, I. G.   +3 more
core   +1 more source

Resonant Vibrational Excitation and Overtone Vibrational Emissions of Nitric Oxide (NO) in Sub‐Auroral Ion Drift (SAID) Region: A Source of STEVE Continuum Emission

open access: yesGeophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract At elevated electron temperature (Te≥3000°K ${T}_{e}\mathit{\ge }3000\mathit{{}^{\circ}}\mathrm{K}$) inside Sub‐Auroral Ion Drift, resonant vibrational excitation (RVE) increases the vibrationally excited (v≥8 $v\mathit{\ge }8$) nitric oxide (NO) population in the E‐region, which undergoes overtone vibrational emissions (Δv≥8 ${\Delta }v ...
Andrew W. Yau   +2 more
wiley   +1 more source

Analysis for the results of geomagnetic storms measured by Macau Science Satellite-1

open access: yesEarth and Planetary Physics
Strong flares and/or coronal mass ejections (CMEs) could bring us disastrous space weather, destroy crucial technology in space, and cause a large-scale blackout during some extreme cases.
HaiSheng Ji   +4 more
doaj   +1 more source

Forecast of Total Electron Content over Europe for disturbed ionospheric Conditions [PDF]

open access: yes, 2012
A general picture of the occurrence of ionospheric storms as function of local time, season and location is known from numerous studies over the past 50 years.
Berdermann, Jens   +3 more
core  

Surface Air Enrichment of Cosmogenic 35S at a Subtropical Site During the May 2024 Solar Superstorm

open access: yesGeophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Cosmogenic radiosulfur (35S) is produced in the atmosphere by high‐energy particle interactions and serves as a sensitive tracer of stratospheric intrusions. In May 2024, an extreme solar storm provided a rare opportunity to examine atmospheric 35S responses to intense solar activity.
Xinling Zou   +4 more
wiley   +1 more source

A study of geomagnetic storms [PDF]

open access: yes
Twenty-one geomagnetic storm events during 1966 and 1970 were studied by using simultaneous interplanetary magnetic field and plasma parameters. Explorer 33 and 35 field and plasma data were analyzed on large-scale (hourly) and small-scale (3 min ...
Patel, V. L.
core   +1 more source

Abrupt Disappearance of Plasmaspheric Hiss Inside the Magnetic Dip

open access: yesGeophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Plasmaspheric hiss plays an important role in radiation belt electron dynamics, and its excitation and propagation have long attracted attention. During a substorm, Van Allen Probe B observed the disappearance of plasmaspheric hiss at the magnetic dip, which was driven by the injection of energetic protons.
Yan Zhuang   +6 more
wiley   +1 more source

Mid-latitude ionosphere during two great geomagnetic storms

open access: yesAnnals of Geophysics, 1996
The ionospheric disturbances observed at many European ionosonde stations in association with the severe geomagnetic storms occurring on 19-20 December 1980 and 11-12 April 1981 were investigated by using the available ionospheric and geomagnetic data ...
L. R. Cander, I. M. Vasiljevic
doaj   +1 more source

Solar cycle phase and occurrence of intense geomagnetic storms

open access: yesEarth, Planets and Space
Solar cycles have an asymmetrical shape with a fast rise and a slow decline, which varies from cycle to cycle. This makes it difficult to study the solar cycle phase dependence of the occurrence of intense solar-terrestrial events such as intense ...
S. Watari
doaj   +1 more source

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