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Accueil > Séminaires & Soutenances > Séminaires, soutenances de thèses et HDR précédents > 2009 > Séminaires 2009 > Le mardi 24 mars 2009 14h
Le mardi 24 mars 2009 14h
Kanako Seki (Université de Nagoya)
mardi 24 mars 14h
Saint-Maur salle de réunion
Investigation of particle acceleration and transport in Geospace :
The ERG project and related pre-launch activities for integrated data
analysis and modeling
Geospace storms are the largest electromagnetic disturbances in the
near-Earth space caused by CMEs and CIRs accompanied by the strong southward IMF.
During the geospace storms, it is observationally known that the
particle acceleration up to the relativistic energies are taking place as a
consequence of dynamic interactions of the magnetic and electric field and
particles. In the course of the acceleration processes, all charged particles in a wide energy range over 6 orders of magnitude (from <1eV to >MeV) are potentially
important. The occurrence frequency of geospace storms increases with increasing
solar activities.
Aiming at the next solar maximum, we are now developing the ERG
(Energization and Radiation in Geospace) project, which consists of the three parts :
1. Satellite
observation of equatorial inner magnetosphere with the particle sensor
package and wave instruments that cover potentially important energy and
frequency ranges,
2. Ground-based network observations of field configurations to
capture global features, and
3. Integrated data center to promote data analysis, modeling, and simulation studies to connect satellite and ground-based observations.
In this presentation, we report on the current status of the ERG
project and related pre-launch activities in Japan mainly focused on the 3rd part for
integrated data analysis and modeling, which includes recently started GEMSIS (Geospace Environment Modeling System for Integrated Studies) project of STEL,
Nagoya University. Key issues and scientific strategy of the data analysis,
modeling, simulation, and their combination in order to understand the physical
process of the plasma transport and particle acceleration in the inner
magnetosphere during the geospace storms will be also discussed.
Dans la même rubrique :
- Mardi 6 janvier 2009 à 14h
- Jeudi 15 janvier 2009 à 11h
- Jeudi 22 janvier 2009 à 11h
- Le jeudi 12 février 2009 à 11 h
- Le jeudi 5 mars 2009 à 11h
- Le lundi 9 mars à 14h
- Le mercredi 11 mars à 11 heures
- Le jeudi 12 mars à 14h
- Le jeudi 26 mars 2009 à 11h
- Lundi 30 mars 2009 à 14h
- Le jeudi 2 avril 2009 à 11h
- Le jeudi 9 avril 2009 à 11h
- Le lundi 27 avril 2009 à 11h30
- Le jeudi 7 mai 2009 à 11h
- le mardi 9 juin à 11h
- le jeudi 11 juin à 14h
- le vendredi 26 juin à 14h
- le jeudi 2 juillet à 11h
- Le jeudi 9 juillet à 10 heures 30
- Le jeudi 24 septembre à 11h
