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From the Sun to the Earth: Impact of the 27-28 May 2003 Solar Events on the Magnetosphere, Ionosphere and Thermosphere : Volume 24, Issue 1 (07/03/2006)

By Hanuise, C.

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Book Id: WPLBN0003991871
Format Type: PDF Article :
File Size: Pages 23
Reproduction Date: 2015

Title: From the Sun to the Earth: Impact of the 27-28 May 2003 Solar Events on the Magnetosphere, Ionosphere and Thermosphere : Volume 24, Issue 1 (07/03/2006)  
Author: Hanuise, C.
Volume: Vol. 24, Issue 1
Language: English
Subject: Science, Annales, Geophysicae
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2006
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Cornilleau-Wehrlin, N., Auchère, F., Bocchialini, K., Cerisier, J. C., Watermann, J., Vilmer, N.,...Valette, J. (2006). From the Sun to the Earth: Impact of the 27-28 May 2003 Solar Events on the Magnetosphere, Ionosphere and Thermosphere : Volume 24, Issue 1 (07/03/2006). Retrieved from http://worldebookfair.com/


Description
Description: LPCE/CNRS, 3A avenue de la Recherche Scientifique, 45071 Orléans Cedex, France. During the last week of May 2003, the solar active region AR 10365 produced a large number of flares, several of which were accompanied by Coronal Mass Ejections (CME). Specifically on 27 and 28 May three halo CMEs were observed which had a significant impact on geospace. On 29 May, upon their arrival at the L1 point, in front of the Earth's magnetosphere, two interplanetary shocks and two additional solar wind pressure pulses were recorded by the ACE spacecraft. The interplanetary magnetic field data showed the clear signature of a magnetic cloud passing ACE. In the wake of the successive increases in solar wind pressure, the magnetosphere became strongly compressed and the sub-solar magnetopause moved inside five Earth radii. At low altitudes the increased energy input to the magnetosphere was responsible for a substantial enhancement of Region-1 field-aligned currents. The ionospheric Hall currents also intensified and the entire high-latitude current system moved equatorward by about 10°. Several substorms occurred during this period, some of them - but not all - apparently triggered by the solar wind pressure pulses. The storm's most notable consequences on geospace, including space weather effects, were (1) the expansion of the auroral oval, and aurorae seen at mid latitudes, (2) the significant modification of the total electron content in the sunlight high-latitude ionosphere, (3) the perturbation of radio-wave propagation manifested by HF blackouts and increased GPS signal scintillation, and (4) the heating of the thermosphere, causing increased satellite drag. We discuss the reasons why the May 2003 storm is less intense than the October-November 2003 storms, although several indicators reach similar intensities.

Summary
From the Sun to the Earth: impact of the 27-28 May 2003 solar events on the magnetosphere, ionosphere and thermosphere

 

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