Solar wind and geomagnetism: toward a standard classification of geomagnetic activity from 1868 to 2009
Name
Zerbo-2012-Solar wind and geoma.pdf
Size
2.2 MB
Format
Adobe PDF
Checksum (MD5)
2ca1ef97f0c31ea991c9b634981d29cc
Author(s)
Zerbo, J. L.
Mazaudier, C. Amory
Ouattara, F.
Richardson, John D.
Date Issued
February 2012
Journal
Annales Geophysicae
Publisher
Copernicus GmbH
Citation
Zerbo, J. L. et al. “Solar Wind and Geomagnetism: Toward a Standard Classification of Geomagnetic Activity from 1868 to 2009.” Annales Geophysicae 30.2 (2012): 421–426.
Version
Final published version
Abstract
We examined solar activity with a large series of geomagnetic data from 1868 to 2009. We have revisited the geomagnetic activity classification scheme of Legrand and Simon (1989) and improve their scheme by lowering the minimum Aa index value for shock and recurrent activity from 40 to 20 nT. This improved scheme allows us to clearly classify about 80% of the geomagnetic activity in this time period instead of only 60% for the previous Legrand and Simon classification.
MIT Department
MIT Kavli Institute for Astrophysics and Space Research
Terms of Use
Creative Commons Attribution 3.0
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.5194/angeo-30-421-2012
