Case Study of ULF Waves in the Cusp Region

Details Case Study of ULF Waves in the Cusp Region Case Study of ULF Waves in the Cusp Region

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsm51a..03l&link_type=abstract

American Geophysical Union, Fall Meeting 2003, abstract #SM51A-03

Physics

2724 Magnetopause, Cusp, And Boundary Layers, 2728 Magnetosheath, 2731 Magnetosphere: Outer, 2752 Mhd Waves And Instabilities, 2784 Solar Wind/Magnetosphere Interactions

Scientific paper

We investigate properties of ULF wave activity in the cusp region and the high latitude boundary layer (HLBL) during three polar cusp crossings of the Cluster spacecraft in March 2001. Various regions (the HLBL, plasma mantle, magnetosheath and the magnetopause) in a crossing event are identified by examining the signatures of energetic particles (30 - 1500 keV for ions and 20 - 400 keV for electrons) from the RAPID experiment and the variations of magnetic field and plasma parameters. Strong magnetic fluctuations are seen in the magnetosheath adjacent to the magnetopause and in the cusp. The Poynting flux of the waves in the magnetosheath is often seen flowing mainly in the direction of plasma bulk flow. In the cusp, strong wave energy flux is seen in some cases flowing toward the ionosphere, which may provide an important part of the the energy transported from the solar wind into the magnetosphere. We have also examined the signatures of possible wave mode conversion at the magnetopause, a phenomena often seen in the low latitude boundary layer, and compared the signatures with the field and plasma variations (e.g. the gradient of the Alfven velocity), which are predicted to be closely related to the phenomena. In HLBL, we observed the intensity of energetic ions pulsating at periods ranging from 100 to 300 sec. The relationship between these pulsations and the ULF waves will be discussed.

Affiliated with

Also associated with

No associations

Rating

Case Study of ULF Waves in the Cusp Region 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 Case Study of ULF Waves in the Cusp Region, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Case Study of ULF Waves in the Cusp Region will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1650171