Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsh31a1665s&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SH31A-1665
Physics
2134 Interplanetary Magnetic Fields, 2149 Mhd Waves And Turbulence (2752, 6050, 7836), 2159 Plasma Waves And Turbulence, 7513 Coronal Mass Ejections (2101)
Scientific paper
Recent efforts that focus on the MHD extensions to Kolmogorov's 4/5 Law have shown that the interplanetary spectrum at 1 AU results from the intrinsically turbulent dynamic of the interplanetary medium. Cascade rates for energy flowing from large to small scales are in agreement with the rate of local heating as determined by the radial gradient of the thermal proton temperature. We continue this effort to place greater restrictions on solar wind type that refine our comparison with observations and we show that the transport of energy through the multi-dimensional spectrum leads to a 2D state that populates wave vectors perpendicular to the mean magnetic field. However, we also resolve a reduced cascade rate associated with moving energy to larger parallel wave vectors. The balance between these two cascades is examined in detail for fast and slow wind observations.
Forman Miriam A.
MacBride Benjamin T.
Smith Walter C.
Stawarz Joshua E.
Vasquez Bernard J.
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