| Session Details | |
| Section | ST - Solar & Terrestrial Sciences IG - Interdisciplinary Geosciences |
| Session Title | Geomagnetically Induced Currents and the Extreme Space Weather |
| Main Convener | Prof. Shigeru Fujita (Meteorological College, Japan Meteorological Agency, Japan) |
| Co-convener(s) | Dr. Ikuko Fujii (Meteorological College, Japan Meteorological Agency, Japan) Dr. Ryuho Kataoka (National Institute of Polar Research, Japan) Dr. Shinichi Watari (National Institute of Information and Communications Technology, Japan) Dr. Antti Pulkkinen (Catholic University of America/Institute for Astrophysics and Computational Sciences, United States) |
| Session Description | In March 13, 1989, huge geomagnetically induced currents (GIC) associated with sudden changes of the geomagnetic field caused power line failure in Canada due to damage of the transformer installed in a substation. In order to manage the damage from such extreme GIC events, we ought to know intensity and frequency of the extreme space weather events as well as the GIC caused by such extreme events. To tackle this issue requires interdisciplinary study from the solar physics, the space science (interplanetary, magnetospheric and ionospheric physics), and the solid Earth geomagnetism. In addition, although the GIC issue is usually regarded as the problems at the high-latitude countries, there were some reports about possible GIC accidents from mid- and low-latitude countries. .Therefore, the GIC is the global issue. Furthermore, the heterogeneous ground resistivity may result in unexpected local enhancement of the GIC. This fact indicates importance of the ground resistivity on the GIC together with input from the extreme space weather events. Therefore, this session discuss the nature and characteristics of the extreme space weather event from the solar physics and space science, observations and modeling of geomagnetically induced electric field (GIE) and/or GIC both in the high-latitude countries and in the mid- and low-latitude countries. We also welcome the studies in the related fields. |