Statistics
Scientific paper
May 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agusmsh51b..08k&link_type=abstract
American Geophysical Union, Spring Meeting 2008, abstract #SH51B-08
Statistics
7863 Turbulence (4490)
Scientific paper
We present results of electric and magnetic field fluctuation spectras in 14 intervals observed in the ambient solar wind near 1 AU, using electric- and magnetic field and plasma measurements from Cluster and ACE spacecrafts. The main focus is particularly on the energy transfer in the small scales (k ρ > 1), usually referred as "dissipation range" in literature. It is however likely that it is a second inertial range caused by the change in the dispersion relation as energy cascades to smaller wavelengths from Alfven waves in some nonlinear process and heats the surrounding plasma. In the inertial range electric and magnetic fluctuation spectras follow the classical fluid-like Kolmogorov behavior as is previously observed. The fluid-like behavior breaks down near the ion thermal gyro-radius ( ρi) and we observe an enhancement in the electric spectrum while the magnetic spectrum becomes steeper. We will also show how instrument noise affects the measured spectra and complicates the analysis of the underlying physics. Statistics of the observed intervals are presented. Special interest is paid to the in-situ measurements of the phase speed (vphi(k ρi)) of the turbulent plasma and comparison of the approximated dispersion of the waves to the theoretical predictions, goal being to find out the nature of the observed waves in the "dissipation range".
Bale Stuart
Kilpua S.
No associations
LandOfFree
Measurements of electric and magnetic field fluctuation spectra in the ambient solar wind. 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 Measurements of electric and magnetic field fluctuation spectra in the ambient solar wind., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measurements of electric and magnetic field fluctuation spectra in the ambient solar wind. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1400010