LONG-PERIOD GIGANTIC GEOMAGNETIC FIELD PULSATIONS

Journal Article · Tue Jan 01 04:00:00 EST 1963 · Geomagnetism Aeronomy

OSTI ID:4077427

Ol', A I

A special type of gigantic pulsation Pgl was found in the magnetograms of polar observatories. The main characteristics of Pgl are their regular form, high amplitude (tens and hundreds of gamma ), and long period hundreds of seconds). It was found that the period of Pgl increases with latitude. The curve for the diurnal variation of the frequency of appearance of Pgl exhibits two maxima, at 8 and 16 hours geomagnetic time. The relative intensity of the maxima depends on latitude and season. The period of the pulsations corresponding to the various maxima depends differently on latitude and the phase of the solar activity cycle. It is assumed that Pgl pulsations result from magnetohydrodynamic waves that are generated at the boundary of the exosphere. It is shown that the period of Pgl must be proportional to the square of the secant of geomagnetic latitude. (auth)

• Research Organization: Arctic and Antarctic Scientific-Research Inst., USSR
• NSA Number: NSA-18-011049
• OSTI ID: 4077427
• Journal Information: Geomagnetism Aeronomy, Journal Name: Geomagnetism Aeronomy Vol. Vol: 3
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ARCTIC REGIONS
COSMIC RADIATION
EARTH
FREQUENCY
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
MEASURED VALUES
PHYSICS
SUN
VARIATIONS
ZONES