Physics
Scientific paper
Aug 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004georl..3116807b&link_type=abstract
Geophysical Research Letters, Volume 31, Issue 16, CiteID L16807
Physics
13
Interplanetary Physics: Ejecta, Driver Gases, And Magnetic Clouds, Interplanetary Physics: Interplanetary Shocks, Interplanetary Physics: Mhd Waves And Turbulence, Interplanetary Physics: Solar Wind Plasma
Scientific paper
The probability distributions of changes in the solar speed observed at 1 AU by ACE during 1999 on scales from 1 hour to 171 days and at a scale of 64 sec can be described by a single distribution function. The function is a simple generalization of the Tsallis q-distribution, a probability distribution that was derived from nonextensive statistical mechanics. The fluctuations in speed are related to (1) intermittent turbulence and shocks on the smallest scales; (2) ejecta, corotating streams, slow flows, interaction regions, etc. on intermediate scales; and (3) systems of interacting flows involving all of these features, on scales greater than the solar rotation period.
Burlaga Leonard Francis
Viñas Adolfo F.
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