SUDDEN COMMENCEMENT HYDROMAGNETIC WAVES AND THE ENHANCED SOLAR WIND DIRECTION

Journal Article · Tue May 01 04:00:00 EDT 1962 · J. Geophys. Research

DOI:https://doi.org/10.1029/JZ067i005p02054· OSTI ID:4817511

Wilson, C R

From the analysis of 77 sudden commencement (SC) hydromagnetic waves (for 1957 to 1960) at Sitka and College, Alaska, the azimuth of the meridian plane of symmetry separating the two polarization zones was determined to be 25 deg west of the sun-earth line. The fact that the plane of symmetry is inclined to the west of the sunearth line is thought to indicate that the solar plasma stream, which generates the SC hydromagnetic waves upon collision with the earth's magnetic field, propagates parallel to the extended solar magnetic field. An analysis of the mechanism for the excitation of transverse hydromagnetic waves shows that the inclination of the normal to the solar plasma shock front 25 deg west of the sun-earth line, as determined by the symmetry pattern of SC hydromagnetic waves, seems to indicate that the solar plasma respensible for SC magnetic storms is guided, as in polarcap absorption events and high-energy solar cosmic rays, by the extended solar maanetic field. (P.C.H.)

• Research Organization: Univ. of Alaska, college
• Sponsoring Organization: USDOE
• NSA Number: NSA-16-019649
• OSTI ID: 4817511
• Journal Information: J. Geophys. Research, Journal Name: J. Geophys. Research Vol. Vol: 67
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
ASTROPHYSICS
COSMIC RADIATION
EARTH
ENERGY RANGE
EXCITATION
GEOPHYSICS
MAGNETIC FIELDS
MAGNETOHYDRODYNAMICS
MOTION
OSCILLATIONS
PHYSICS
PLASMA
POLAR-CAP ABSORPTION
POLARIZATION
PRODUCTION
SHOCK WAVES
SPACE
SUN
TURBULENCE