Investigating the Earth's magnetosphere response to IMF Bz magnitude using SWMF

Details Investigating the Earth's magnetosphere response to IMF Bz magnitude using SWMF Investigating the Earth's magnetosphere response to IMF Bz magnitude using SWMF

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm23b1693c&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SM23B-1693

Other

2134 Interplanetary Magnetic Fields, 2740 Magnetospheric Configuration And Dynamics, 2753 Numerical Modeling, 2784 Solar Wind/Magnetosphere Interactions, 2788 Magnetic Storms And Substorms (7954)

Scientific paper

Observations indicate that the magnitude of southward interplanetary magnetic field (IMF) contributes to different magnetosphere response modes. Using the University of Michigan Space Weather Modeling Framework (SWMF), including a global magnetosphere model, coupled with an inner magnetosphere model and an ionosphere electrodynamics model, we attempt to quantify the role of the IMF Bz in determining the level of activity in the magnetosphere. In separate experiments, the IMF Bz component is set to -2.5 nT, - 5 nT, -10 nT, -15 nT and -20 nT while keeping the other input solar wind parameters constant. We have found that the magnetosphere becomes more and more active as IMF Bz becomes more negative. The average vertical magnetic field at geosynchronous orbit, at all local times, decrease systematically, i.e., the inner magnetosphere becomes more stretched as the IMF Bz becomes more negative. The standard deviation also becomes larger, implying that the magnetosphere shows more variability. When the IMF is weak (-2.5 nT), the magnetic field at local midnight is quasi-steady. The magnetosphere starts to show quasi- periodic (~ 2 hours) dipolarizations when IMF is -5 nT and stronger. However, as the IMF Bz becomes more negative, increased turbulence develops around the inner magnetosphere and appears to disrupt the periodic formation of the night side reconnection.

Affiliated with

Also associated with

No associations

Rating

Investigating the Earth's magnetosphere response to IMF Bz magnitude using SWMF 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 Investigating the Earth's magnetosphere response to IMF Bz magnitude using SWMF, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Investigating the Earth's magnetosphere response to IMF Bz magnitude using SWMF will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1094927