Turbulence in the solar chromosphere and its role in small scale energy deposition

Details Turbulence in the solar chromosphere and its role in small scale energy deposition Turbulence in the solar chromosphere and its role in small scale energy deposition

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmsh11b1650l&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #SH11B-1650

Physics

Plasma Physics

[7507] Solar Physics, Astrophysics, And Astronomy / Chromosphere, [7863] Space Plasma Physics / Turbulence

Scientific paper

The line-of-sight velocity fluctuations in the solar chromosphere are studied. The velocities are obtained from imaging spectral scans in the chromospheric line Ca II 854.2 nm, acquired at high spatial resolution with the Interferometric BIdimensional Spectrometer (IBIS) in the quiet Sun. Nearly power law tails above the acoustic cutoff frequency in the chromospheric velocity power spectra are found. The probability density function of chromospheric velocity increments are non-Gaussian and asymmetric. Intermittency is much larger in the network than in fibril and internetwork regions. These results suggest that the small scale velocity fluctuations in the solar chromosphere are the result of a turbulent cascade generated from acoustic oscillations near the cutoff frequency. An estimate of the energy flux towards small scales is given on the basis of third order structure functions of velocity increments and the possible role of the turbulent cascade for small scale energy deposition and chromospheric heating is discussed.

Affiliated with

Also associated with

No associations

Rating

Turbulence in the solar chromosphere and its role in small scale energy deposition 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 Turbulence in the solar chromosphere and its role in small scale energy deposition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Turbulence in the solar chromosphere and its role in small scale energy deposition will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1507076