... Low-latitude aurorae are a storm time phenomena, in which particles originating from ... seen during the main phase of some magnetic storms (and which is not a "pure" type ...
... Large storms appear more frequently (though not only) during years of high sunspot activity, and such storms also cause auroras at unusual locations, much further from the magnetic poles--even in the middle of Europe and of the United States. ...
... Chapman, Sidney, Historical introduction to aurora and magnetic storms, pp. 21-29, in The Birkeland Symposium on Aurora and Magnetic Storms, edited by A. Egeland and 1. ...
... Interplanetary Plasma . Polar Magnetic Storms . Assessment References: A-H . ... Observations of magnetic storms (1724) and of perturbations associated with the ... evidence for their association with large storms led Birkeland (1900) to propose ...
... Thus, by measuring these effects with ground based magnetometers, one can monitor the magnetospheric activity (e.g., the development of geomagnetic storms and substorms ) continuosly. ...