High speed solar wind streams with and without magnetic storms at Earth

Details High speed solar wind streams with and without magnetic storms at Earth High speed solar wind streams with and without magnetic storms at Earth

May 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agusmsa13a..11k&link_type=abstract

American Geophysical Union, Spring Meeting 2005, abstract #SA13A-11

Mathematics

Probability

2752 Mhd Waves And Instabilities, 2784 Solar Wind/Magnetosphere Interactions, 2788 Storms And Substorms, 7867 Wave/Particle Interactions

Scientific paper

We show two high speed solar wind streams in April 2002 carrying solar energy flux that with high probability, couple to the Earth's magnetosphere and cause enhanced magnetospheric fluctuations. Many aspects of the two streams are similar and with similar effects at Earth. However there are also significant differences that allow us to differentiate cause and effect in some cases. For the first stream the IMF is primarily northward and Dst at Earth is modest. The second stream has strong southward IMF and large Dst. The first high speed stream is not associated with a large magnetic storm, but strong Pc5 pulsations are observed just inside the magnetopause (dawn, noon, and dusk), in the magnetotail, and at geostationary orbit. The second high speed stream shows strong magnetospheric pulsations and is associated with a large magnetic storm. Enhanced fluxes of energetic particles are observed for both streams, but the second stream with the geomagnetic storm shows fluxes extending across a larger L-shell range. Wind observations, 70-80 RE upstream from Earth, show significant, sustained power at Pc5 frequencies intrinsic to the high speed stream for both cases. The enhanced power is evident in dynamic pressure fluctuations and to a lesser extent in compressional magnetic field fluctuations. In the Earth's magnetosphere the wave mode depends on the location that the waves are observed. Polodial mode waves are commonly seen on the dawn and dusk flanks of the magnetosphere, but at the nose the compressional component is frequently dominant. In the magnetotail, there are both polodial and torodial modes, but the torodial mode is usually dominant.

Affiliated with

Also associated with

No associations

Rating

High speed solar wind streams with and without magnetic storms at Earth 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 High speed solar wind streams with and without magnetic storms at Earth, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High speed solar wind streams with and without magnetic storms at Earth will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1690193