Structure function measurements of the intermittent MHD turbulent cascade
The intertmittent nature of turbulence within solar wind plasma has been demonstrated by several studies of spacecraft data. Using magnetic field data taken in high speed flows at high heliographic latitudes by the Ulysses probe, the character of fluctuations within the inertia] range is discussed....
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
1997-01-01
|
| Series: | Nonlinear Processes in Geophysics |
| Online Access: | http://www.nonlin-processes-geophys.net/4/185/1997/npg-4-185-1997.pdf |
| _version_ | 1811337981524443136 |
|---|---|
| author | T. S. Horbury A. Balogh |
| author_facet | T. S. Horbury A. Balogh |
| author_sort | T. S. Horbury |
| collection | DOAJ |
| description | The intertmittent nature of turbulence within solar wind plasma has been demonstrated by several studies of spacecraft data. Using magnetic field data taken in high speed flows at high heliographic latitudes by the Ulysses probe, the character of fluctuations within the inertia] range is discussed. Structure functions are used extensively. A simple consideration of errors associated with calculations of high moment structure functions is shown to be useful as a practical estimate of the reliability of such calculations. For data sets of around 300 000 points, structure functions of moments above 5 are rarely reliable on the basis of this test, highlighting the importance of considering uncertainties in such calculations. When unreliable results are excluded, it is shown that inertial range polar fluctuations are well described by a multifractal model of turbulent energy transfer. Detailed consideration of the scaling of high order structure functions suggests energy transfer consistent with a "Kolmogorov" cascade. |
| first_indexed | 2024-04-13T18:04:00Z |
| format | Article |
| id | doaj.art-d52363f6d19b4eb2a950b65592809e41 |
| institution | Directory Open Access Journal |
| issn | 1023-5809 1607-7946 |
| language | English |
| last_indexed | 2024-04-13T18:04:00Z |
| publishDate | 1997-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Nonlinear Processes in Geophysics |
| spelling | doaj.art-d52363f6d19b4eb2a950b65592809e412022-12-22T02:36:09ZengCopernicus PublicationsNonlinear Processes in Geophysics1023-58091607-79461997-01-0143185199Structure function measurements of the intermittent MHD turbulent cascadeT. S. HorburyA. BaloghThe intertmittent nature of turbulence within solar wind plasma has been demonstrated by several studies of spacecraft data. Using magnetic field data taken in high speed flows at high heliographic latitudes by the Ulysses probe, the character of fluctuations within the inertia] range is discussed. Structure functions are used extensively. A simple consideration of errors associated with calculations of high moment structure functions is shown to be useful as a practical estimate of the reliability of such calculations. For data sets of around 300 000 points, structure functions of moments above 5 are rarely reliable on the basis of this test, highlighting the importance of considering uncertainties in such calculations. When unreliable results are excluded, it is shown that inertial range polar fluctuations are well described by a multifractal model of turbulent energy transfer. Detailed consideration of the scaling of high order structure functions suggests energy transfer consistent with a "Kolmogorov" cascade.http://www.nonlin-processes-geophys.net/4/185/1997/npg-4-185-1997.pdf |
| spellingShingle | T. S. Horbury A. Balogh Structure function measurements of the intermittent MHD turbulent cascade Nonlinear Processes in Geophysics |
| title | Structure function measurements of the intermittent MHD turbulent cascade |
| title_full | Structure function measurements of the intermittent MHD turbulent cascade |
| title_fullStr | Structure function measurements of the intermittent MHD turbulent cascade |
| title_full_unstemmed | Structure function measurements of the intermittent MHD turbulent cascade |
| title_short | Structure function measurements of the intermittent MHD turbulent cascade |
| title_sort | structure function measurements of the intermittent mhd turbulent cascade |
| url | http://www.nonlin-processes-geophys.net/4/185/1997/npg-4-185-1997.pdf |
| work_keys_str_mv | AT tshorbury structurefunctionmeasurementsoftheintermittentmhdturbulentcascade AT abalogh structurefunctionmeasurementsoftheintermittentmhdturbulentcascade |