Accession Number:

ADA021747

Title:

On the Causes of Geomagnetic Activity.

Descriptive Note:

Technical rept.,

Corporate Author:

STANFORD UNIV CALIF INST FOR PLASMA RESEARCH

Personal Author(s):

• Svalgaard,Leif

Report Date:

1975-12-15

Pagination or Media Count:

51.0

Abstract:

The causes of geomagnetic activity are studied both theoretically in terms of the reconnection model and empirically using the am-index and interplanetary solar wind parameters. It is found that two separate mechanisms supply energy to the magnetosphere. One mechanism depends critically on the magnetude and direction of the interplanetary magnetic field. Both depend strongly on solar wind speed.

Descriptors:

• *GEOMAGNETISM
• *ATMOSPHERE MODELS
• *MAGNETOSPHERE
• MAGNETIC FIELDS
• SEASONAL VARIATIONS
• WIND VELOCITY
• DIURNAL VARIATIONS
• MAGNETIC DISTURBANCES
• SOLAR WIND

Subject Categories:

• Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE