The Level of Turbulence in the Solar Wind and the Driving of the Earth's Magnetosphere

Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

2149 Mhd Waves And Turbulence, 2728 Magnetosheath, 2784 Solar Wind/Magnetosphere Interactions, 7831 Laboratory Studies, 7863 Turbulence

Scientific paper

Times when the level of magnetic-field fluctuations in the solar wind are very small (IMF calm) are compared with "normal" times (IMF noisy). Using ISEE-3 and ISEE-2 data, for a given value of solar-wind vBz, it is found that the auroral electrojet indices AE, AU, and AL and the planetary index KP are substantial reduced in magnitude when the IMF is calm. This is particularly true for times when the IMF Bz is northward. An analogy is explored between the solar-wind-driven magnetosphere and laboratory fluid-flow experiments in which the drag on an obstacle in the flow and the structure of the fluid wake behind the obstacle are varied by injecting turbulence of various amplitudes in the upstream fluid. The laboratory results are explained with the concept that turbulent eddy viscosity, which is a function of the turbulence amplitude, controls the coupling of the fluid to the obstacle. This eddy-viscosity-coupling concept is explored for the solar-wind driving the magnetosphere via the magnetosheath. A clue as to why SMCs (steady magnetospheric convection events) occur may be uncovered.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

The Level of Turbulence in the Solar Wind and the Driving of the Earth's Magnetosphere does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Level of Turbulence in the Solar Wind and the Driving of the Earth's Magnetosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Level of Turbulence in the Solar Wind and the Driving of the Earth's Magnetosphere will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1278229

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.