Articles | Volume 10, issue 1/2
Nonlin. Processes Geophys., 10, 93–100, 2003
https://doi.org/10.5194/npg-10-93-2003

Special issue: 4th International Workshop on Nonlinear Waves and Chaos in...

Nonlin. Processes Geophys., 10, 93–100, 2003
https://doi.org/10.5194/npg-10-93-2003

  30 Apr 2003

30 Apr 2003

MHD turbulence and heating of the open field-line solar corona

W. H. Matthaeus1, D. J. Mullan1, P. Dmitruk1, L. Milano1, and S. Oughton2 W. H. Matthaeus et al.
  • 1University of Delaware, Newark DE 19716, USA
  • 2University of Waikato, Hamilton, New Zealand

Abstract. This paper discusses the possibility that heating of the solar corona in open field-line regions emanating from coronal holes is due to a nonlinear cascade, driven by low-frequency or quasi-static magnetohydrodynamic fluctuations. Reflection from coronal inhomogeneities plays an important role in sustaining the cascade. Physical and observational constraints are discussed. Kinetic processes that convert cascaded energy into heat must occur in regions of turbulent small-scale reconnection, and may be similar in some respects to ion heating due to intense electron beams observed in the aurora.