GEOMAGNETIC PULSATIONS WITH LATITUDE-DEPENDENT PERIODS AND THEIR RELATION TO THE STRUCTURE OF THE MAGNETOSPHERE

Journal Article · Sat Feb 01 04:00:00 EST 1964 · Planetary Space Sci.

DOI:https://doi.org/10.1016/0032-0633(64)90118-7· OSTI ID:4031522

Siebert, M

ABS>The analysis of geomagnetic pulsations recorded simultaneously at German observatories, by means of standardized equipment, yields a systematic increase of the period with increasing geomagnetic lntitude as far as the Hcomponents of pc- and pse-type pulsations are concerned. The D-components, on the contrary, are very similar in shape at different latitudes. The most obvious explanation of these pulsations by field-aligned hydromagnetic oscillations in the magnetosphere requires the assumption of a lamellar structure of the plasma density in the region concerned. This conception a1so simply accounts for the frequertly observed bents. The two pulsation types pc and pse are modifications of the same phenomenon due to different excitation mechanisms. The quantitative treatment of this model yields satisfactory agreement between theoretical and observational results. (auth)

• Research Organization: Universitat, Gottingen, Ger.
• NSA Number: NSA-18-018826
• OSTI ID: 4031522
• Journal Information: Planetary Space Sci., Journal Name: Planetary Space Sci. Vol. Vol: 12
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CONFIGURATION
DENSITY
EARTH
EXCITATION
FREQUENCY
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
MECHANICAL STRUCTURES
OSCILLATIONS
PHYSICS
PLASMA
RECORDING SYSTEMS
VARIATIONS
ZONES