Increase of ionization associated with geomagnetic sudden commencements

Large-scale electron bombardment of the atmosphere at the sudden commencement of a geomagnetic storm

1961 • 91 citations

Studies on sudden commencements of geomagnetic storms using IGY data from United States stations

1960 • 52 citations

On sudden commencements of magnetic storms at higher latitudes

1957 • 38 citations

Some studies of the upper atmosphere in the auroral zone

1958 • 9 citations