时间：4月2日周三 4:15-5:15地点：南楼 211 会议室

唐斌斌

中国科学院空间科学与应用研究中心空间天气学国家重点实验室副研究员

主要从事数值模拟和数值建模的工作，在太阳风-磁层相互作用，磁层电流体系，磁层-电离层耦合等方面具有一些实际经验。

2002-2006年 中国科技大学空间物理专业本科

2006-2011年 中科院空间中心博士

2011年至今 中科院空间中心天气室工作

Radial interplanetary magnetic field

and its impact on earth‘s magnetospheric system

报告人：唐斌斌

中科院空间科学与应用研究中心

Abstract: The radial interplanetary magnetic field (IMF), which means the IMF orientation is aligned with the solar wind velocity, is a special state of the solar wind. In this talk, the origin, occurrence numbers of long duration of radial IMF events and their characters are first reviewed. And then, the responses of magnetospheric system to radial IMFs are discussed, which seem to be very different from conventional cases. For example, the location of subsolar magnetopause would move outward by ~2Re comparing with model predictions, which makes the magnetosheath thinner than usual. However, many features of the magnetosphere under the radial IMF still remain open. Here a global MHD simulation is performed, and the most important features that characterize magnetospheric activities (such as magnetic reconnections, the associated magnetospheric convection, the interhemispheric asymmetry, Kelvin-Helmholtz vortex and the ground geomagnetic activity) are investigated. These results imply the controlling role of the IMF direction between the solar wind and magnetosphere interactions