Other
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsm14b..03n&link_type=abstract
American Geophysical Union, Fall Meeting 2006, abstract #SM14B-03
Other
2753 Numerical Modeling, 2778 Ring Current, 2788 Magnetic Storms And Substorms (7954), 3315 Data Assimilation
Scientific paper
We have developed a technique to estimate the distribution of ring current ions and inner magnetospheric electric potential by assimilating a sequence of the ENA data from the IMAGE satellite into a kinetic ring current model (CRCM) by Fok et al. (2001). In this technique, the magnetospheric electric potential distribution is represented by the sum of the Volland-Stern type field and a deviation from it, and the deviation is estimated in the course of the data assimilation process. From the estimated electric potential distribution, the ring current ion distribution is also estimated. Using this technique, we investigated some magnetic storms. The results suggested that the case in which a peak of ENA emission appears around the post-midnight occurs due to a strong westward electric field around the post-midnight as proposed by Ebihara and Fok (2004) who calculated electric potential distribution with another approach.
C:son Brandt Pontus
Ebihara Yasuhiro
Fok M.-
Higuchi Takeo
Keika Kunihiro
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