Geomagnetic storm's precursors observed from 2001 to 2007 with the Global Muon Detector Network (GMDN)

Details Geomagnetic storm's precursors observed from 2001 to 2007 with the Global Muon Detector Network (GMDN) Geomagnetic storm's precursors observed from 2001 to 2007 with the Global Muon Detector Network (GMDN)

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011georl..3816108r&link_type=abstract

Geophysical Research Letters, Volume 38, Issue 16, CiteID L16108

Physics

Interplanetary Physics: Coronal Mass Ejections (4305, 7513), Interplanetary Physics: Cosmic Rays, Interplanetary Physics: Energetic Particles (7514), Magnetospheric Physics: Forecasting (1922, 4315, 7924, 7964), Magnetospheric Physics: Magnetic Storms And Substorms (4305, 7954)

Scientific paper

We use complementary observations from the prototype and expanded Global Muon Detector Network (GMDN) and the Advanced Composition Explorer (ACE) satellite to identify precursors of geomagnetic storm events. The GMDN was completed and started operation in March 2006 with the addition of the Kuwait detector, complementing the detectors at Nagoya, Hobart, and São Martinho da Serra. Analyzed geomagnetic storms sorted by their intensity as measured by the Disturbance storm-time (Dst) index. Between March 2001 and December 2007, 122 Moderate Storms (MS), 51 Intense Storms (IS), and 8 Super Storms (SS) were monitored by the GMDN. The major conclusions are (i) the percentage of the events accompanied by the precursors prior to the Sudden Storm Commencement (SSC) increases with increasing peak Dst, (ii) 15% of MSs, 30% of ISs, and 86% of SSs are accompanied by cosmic ray precursors observed on average 7.2 hours in advance of the SSC.

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