12,766 research outputs found
Dynamical Complexity, Intermittent Turbulence, Coarse-Grained Dissipation, Criticality and Multifractal Processes
The ideas of dynamical complexity induced intermittent turbulence by sporadic
localized interactions of coherent structures are discussed. In particular, we
address the phenomenon of magnetic reconfiguration due to coarse-grained
dissipation as well as the interwoven connection between criticality and
multifractal processes. Specific examples are provided.Comment: 6 pages, 2 figures, submitted to AIP Conference Proceedings for the
6th Annual International Astrophysics Conference, Honolulu, March 16-22, 200
Preferential Acceleration of Coherent Magnetic Structures and Bursty Bulk Flows in Earth's Magnetotail
Observations indicate that the magnetotail convection is turbulent and
bi-modal, consisting of fast bursty bulk flows (BBF) and a nearly stagnant
background. We demonstrate that this observed phenomenon may be understood in
terms of the intermittent interactions, dynamic mergings and preferential
accelerations of coherent magnetic structures under the influence of a
background magnetic field geometry that is consistent with the development of
an X-point mean-field structure.Comment: 12 pages, 5 Postscript figures, uses agums.st
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