Results 11 to 20 of about 286,676 (159)

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   +3 more sources

Plasmaspheric dynamics resulting from the hallowe'en 2003 geomagnetic storms [PDF]

open access: yes, 2009
Cross-phase-derived plasma mass density trends during the Hallowe'en 2003 geomagnetic storms are presented for 38° magnetic latitude 63° (1.61 ≤ L ≤ 5.10), using data from the SAMNET (Subauroral Magnetometer Network), BGS (British Geological Survey), and
Zhang, T.L.   +5 more
core   +5 more sources

Ionospheric response to the corotating interaction region-driven geomagnetic storm of October 2002 [PDF]

open access: yes, 2009
Unlike the geomagnetic storms produced by coronal mass ejections (CMEs), the storms generated by corotating interaction regions (CIRs) are not manifested by dramatic enhancements of the ring current. The CIR-driven storms are however capable of producing
Jayachandran, P.T.   +4 more
core   +4 more sources

A statistical comparison of hot-ion properties at geosynchronous orbit during intense and moderate geomagnetic storms at solar maximum and minimum. [PDF]

open access: yes, 2006
Hot-ion measurements at geosynchronous orbit from the Los Alamos Magnetospheric Plasma Analyzer (MPA) instrument during geomagnetic storms at solar maximum (July 1999–June 2002) and at solar minimum (July 1994–June 1997) are collected, categorized, and ...
Zhang, Jichun C.   +5 more
core   +5 more sources

Radiometric Constraints on the Timing, Tempo, and Effects of Large Igneous Province Emplacement

open access: yesGeophysical Monograph Series, Page 27-82., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jennifer Kasbohm   +2 more
wiley  

+1 more source

Electron loss rates from the outer radiation belt caused by the filling of the outer plasmasphere: The calm before the storm [PDF]

open access: yes, 2009
Measurements from seven spacecraft in geosynchronous orbit are analyzed to determine the decay rate of the number density of the outer electron radiation belt prior to the onset of high-speed-stream-driven geomagnetic storms.
Denton, Michael H.   +3 more
core   +5 more sources

Dynamic subauroral ionospheric electric fields observed by the Falkland Islands radar during the course of a geomagnetic storm [PDF]

open access: yes, 2011
We present an analysis of ionospheric electric field data observed during a geomagnetic storm by the recently deployed HF radar located on the Falkland Islands.
Milan, S. E.   +5 more
core   +5 more sources

The driving mechanisms of particle precipitation during the moderate geomagnetic storm of 7 January 2005 [PDF]

open access: yes, 2007
International audienceThe arrival of an interplanetary coronal mass ejection (ICME) triggered a sudden storm commencement (SSC) at ~09:22 UT on the 7 January 2005. The ICME followed a quiet period in the solar wind and interplanetary magnetic field (IMF).
N. Longden   +7 more
core   +2 more sources

Width of plasmaspheric plumes related to the level of geomagnetic storm intensity [PDF]

open access: yesAnnales Geophysicae, 2022
The plume is a plasma region in the magnetosphere that is detached from the main plasmasphere. It significantly contributes to the dynamic processes in both the inner and outer magnetosphere.
Z. Yang   +7 more
doaj   +1 more source

A machine learning-based model for the next 3-day geomagnetic index (Kp) forecast

open access: yesFrontiers in Astronomy and Space Sciences, 2023
The 3-day Kp forecast product is important and necessary for space weather forecasts. There is some essential information that can be obtained from the 3-day Kp forecast product, such as the start time of the geomagnetic storm, the maximum storm level ...
Jingjing Wang   +10 more
doaj   +1 more source

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