On the properties of turbulent boundary layer over polar cusps (Articolo in rivista)

Type
Label
  • On the properties of turbulent boundary layer over polar cusps (Articolo in rivista) (literal)
Anno
  • 2002-01-01T00:00:00+01:00 (literal)
Alternative label
  • Savin S., et al. (2002)
    On the properties of turbulent boundary layer over polar cusps
    in Nonlinear processes in geophysics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Savin S., et al. (literal)
Pagina inizio
  • 443 (literal)
Pagina fine
  • 451 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 9 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Titolo
  • On the properties of turbulent boundary layer over polar cusps (literal)
Abstract
  • We study properties of nonlinear magnetic fluctuations in the turbulent boundary layer (TBL) over polar cusps during a typical TBL crossing on 19 June 1998. Interball-1 data in the summer TBL are compared with that of Geotail in solar wind (SW) and Polar in the northern TBL. In the TBL two characteristic slopes are seen: =-1 at (0.004–0.08) Hz and =-2.2 at (0.08–2) Hz. We present evidences that random current sheets with features of coherent solitons can result in: (i) slopes of *• 1 in the magnetic power spectra; (ii) demagnetization of the SW plasma in “diamagnetic bubbles”; (iii) nonlinear, presumably, 3-wave phase coupling with cascade features; (iiii) departure from the Gaussian statistics. We discuss the above TBL properties in terms of intermittency and self-organization of nonlinear systems, and compare them with kinetic simulations of reconnected current sheet at the nonlinear state. Virtual satellite data in the model current sheet reproduce valuable cascade-like spectral and bi-spectral properties of the TBL turbulence. (literal)

Incoming links:


Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Prodotto
data.CNR.it