Other
Scientific paper
Mar 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1216..643n&link_type=abstract
TWELFTH INTERNATIONAL SOLAR WIND CONFERENCE. AIP Conference Proceedings, Volume 1216, pp. 643-646 (2010).
Other
Solar Wind, Magnetic Fields, Spacecraft, Turbulence, Solar Activity, Particle Emission, Solar Wind, Electric And Magnetic Fields, Solar Magnetism, Spacecraft Sheaths, Wakes, And Charging, Turbulence, Solar Activity
Scientific paper
We present generalized structure function (GSF) analysis of magnetic and velocity field fluctuations measured in situ in the solar wind at ~ 1 AU with the ACE spacecraft. We decompose the fluctuations into directions parallel and perpendicular to the mean local background magnetic field. GSF plots based on these quantities are shown to provide a clear indicator of the spectral break between the inertial range and ``1/f`` range of scaling. In GSF plots, the projected velocity and magnetic field fluctuations track each other closely in the inertial range in both fast and slow solar wind and at solar maximum and minimum. At longer timescales the ``1/f'' range is easily identified, because the magnetic field fluctuations display a flattening of the GSFs (exponents become zero) consistent with a ~1/f PSD. The velocity fluctuations on the other hand have GSFs which steepen, consistent with a PSD of ~1/fα where α as determined by GSF varies with solar wind speed and solar cycle but is closer to two. The extent of the inertial range determined in this manner differs between fast and slow solar wind streams, and between periods of maximum and minimum solar activity.
Chapman Sandra C.
Dendy R. O.
Nicol R. M.
No associations
LandOfFree
The crossover to the ``1/f'' region of solar wind fluctuations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The crossover to the ``1/f'' region of solar wind fluctuations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The crossover to the ``1/f'' region of solar wind fluctuations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1424055