Other
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufmsa21b0446c&link_type=abstract
American Geophysical Union, Fall Meeting 2002, abstract #SA21B-0446
Other
2411 Electric Fields (2712), 2712 Electric Fields (2411), 2736 Magnetosphere/Ionosphere Interactions, 2788 Storms And Substorms
Scientific paper
On April 17, 2002 an intense, long duration electric field penetration event was captured by the Jicamarca incoherent scatter radar. Other radars in the U. S. chain detected the event as well, although not with as much clarity. The interplanetary electric field (IEF) is available from the ACE satellite as well. The ratio of the dawn dusk component of the IEF to the dawn dusk component in the equatorial ionosphere for periods less that about two hours is 15:1. We argue that this corresponds to the ratio of the size of the magnetosphere to the length of the connection line between the interplanetary magnetic field (IMF) and the Earth's magnetic field. Simultaneous magnetic field measurements at Huancayo reveal the same high frequency components and suggest that a chain of stations or an equatorial fleet of satellites in low earth orbit could be used to monitor the connection length continuously.
Chau Jorge L.
Kelley Michael C.
Makela Jarmo
Nicolls Michael J.
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