Accession Number:

AD0256237

Title:

RELATION BETWEEN IONOSPHERIC AND GEOMAGNETIC STORMS

Descriptive Note:

Corporate Author:

AVCO CORP WILMINGTON MASS RESEARCH AND ADVANCED DEVELOPMENT DIV

Personal Author(s):

Report Date:

1961-02-01

Pagination or Media Count:

1.0

Abstract:

Analysis was made of the variations of the minimum frequency reflected from the ionic regions fmin and the horizontal geomagnetic component in a short-time interval preceding and following 21 sudden-commencement SC geomagnetic storms. The relative energy levels of the plasma clouds ejected from the sun are estimated from the variations of the geomagnetic field following a sudden commencement. Highenergy clouds are found to be associated with pre-SC increases in fmin and the horizontal component. Post-SC variations in fmin strongly depend on the magnitude of geomagnetic activity. The polar cap absorption and geomagnetic disturbance accompanying the storms of 13 and 29 September 1957 are analyzed in detail. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE