 |
| Titel |
Cancellation exponents and multifractal scaling laws in the solar wind magnetohydrodynamic turbulence |
| VerfasserIn |
V. Carbone, R. Bruno |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
0992-7689
|
| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 14, no. 8 ; Nr. 14, no. 8, S.777-785 |
| Datensatznummer |
250012380
|
| Publikation (Nr.) |
 copernicus.org/angeo-14-777-1996.pdf |
|
|
|
|
|
| Zusammenfassung |
| Some signed measures in turbulence are found
to be sign-singular, that is their sign reverses continuously on arbitrary finer
scales with a reduction of the cancellation between positive and negative
contributions. The strength of the singularity is characterized by a scaling
exponent κ, the cancellation exponent. In the present study by using
some turbulent samples of the velocity field obtained from spacecraft
measurements in the interplanetary medium, we show that sign-singularity is
present everywhere in low-frequency turbulent samples. The cancellation exponent
can be related to the characteristic scaling laws of turbulence. Differences in
the values of κ, calculated in both high- and low-speed streams,
allow us to outline some physical differences in the samples with different
velocities. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|