NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Analysis of the 31 Oct 1972 interplanetary shock wave and associated unusual phenomenaWe analyze in detail the disturbed time period Oct. 31-Nov. 1, 1972 using magnetic field, plasma, and energetic particle data as well as magnetic field data. In particular, we discuss an interplanetary forward shock wave accompanied by a traditional shock-spike event in the energetic particles, a large tangential discontinuity correlated with a geomagnetic storm main phase, and a reverse interplanetary shock. This forward and reverse shock pair was caused by a 2N solar flare which occurred some 47 hours earlier. We also discuss an unusual rarefaction in the solar wind following (and probably related to) the shock pair, wherein the Alfven Mach number abruptly decreased from about 4.5 to about 1.5, allowing the earth's bow shock to move outward at least 20 earth radii beyond its nominal position.
Document ID
19760043979
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Ipavich, F. M.
(Maryland, University College Park, Md., United States)
Lepping, R. P.
(NASA Goddard Space Flight Center Laboratory for Extraterrestrial Physics, Greenbelt, Md., United States)
Date Acquired
August 8, 2013
Publication Date
January 1, 1975
Subject Category
Astrophysics
Meeting Information
Meeting: International Cosmic Ray Conference
Location: Munich
Start Date: August 15, 1975
End Date: August 29, 1975
Accession Number
76A26945
Funding Number(s)
CONTRACT_GRANT: NGR-21-002-224
CONTRACT_GRANT: NAS5-11063
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available