Case study of nightside magnetospheric magnetic field response to interplanetary shocks

Details Case study of nightside magnetospheric magnetic field response to interplanetary shocks Case study of nightside magnetospheric magnetic field response to interplanetary shocks

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010jgra..11510247w&link_type=abstract

Journal of Geophysical Research, Volume 115, Issue A10, CiteID A10247

Physics

2

Magnetospheric Physics: Solar Wind/Magnetosphere Interactions, Magnetospheric Physics: Magnetospheric Configuration And Dynamics, Magnetospheric Physics: Numerical Modeling, Magnetospheric Physics: Magnetosphere: Inner, Magnetospheric Physics: Magnetotail

Scientific paper

Observations show that the geosynchronous magnetic field in midnight sector sometimes decreases when an interplanetary (IP) fast forward shock (FFS) passes Earth, even though the magnetosphere is always compressed. We perform case studies of the response observed by the GOES spacecraft at geosynchronous orbit near midnight to two IP shocks passing Earth. One shock produces a decrease in BZ (a negative response) and the other an increase in BZ (a positive response). A global 3D MHD code is run to reproduce the responses at geosynchronous orbit, and to further provide information on the initiation and development of BZ variations in the entire magnetosphere. The model reveals that when a FFS sweeps over the magnetosphere, there exist mainly two regions, a positive response region caused by the compressive effect of the shock and a negative response region which is probably associated with the temporary enhancement of earthward convection in the nightside magnetosphere. The spacecraft may observe an increase or decrease of the magnetic field depending on which region it is in. The numerical results reproduce the main characters of the geosynchronous magnetic field response to IP shocks for these two typical cases.

Affiliated with

Also associated with

No associations

Rating

Case study of nightside magnetospheric magnetic field response to interplanetary shocks 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 nightside magnetospheric magnetic field response to interplanetary shocks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Case study of nightside magnetospheric magnetic field response to interplanetary shocks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1233527