Cancellation exponents and multifractal scaling laws in the solar wind magnetohydrodynamic turbulence
Item
Title (Dublin Core)
Cancellation exponents and multifractal scaling laws in the solar wind magnetohydrodynamic turbulence
Description (Dublin Core)
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.
Creator (Dublin Core)
Carbone, V.
Bruno, R.
Date (Dublin Core)
2018-09-27
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.1007/s00585-996-0777-0
https://angeo.copernicus.org/articles/14/777/1996/
Source (Dublin Core)
eISSN: 1432-0576
Language (Dublin Core)
eng
