Cold Ions Observed near Magnetopause and their Effects on Reconnection : The Solar Wind-Magnetosphere-Ionosphere Coupling

ISBN-13: 9783659834578 / Angielski / Miękka / 2016 / 164 str.

Sun Hee Lee; Hui Zhang

Opis

Magnetic reconnection at the dayside magnetopause is one of the most important mechanisms that efficiently transfers solar wind particles, momentum, and energy into the Earth's magnetosphere. Cold dense plasma, originating either directly from the ionosphere or from the plasmasphere, has often been observed at the adjacent magnetopause. These cold plasmas may affect reconnection since they modify the plasma properties on the magnetospheric side significantly. Case and statistical studies of the characteristics of the cold ions observed at the dayside magnetopause are presented by using Cluster spacecraft datasets. The behavior of the cold dense plasma of ionospheric origin during magnetic reconnection at the dayside magnetopause, occurrence rates of plasmaspheric plumes and ionospheric outflows, and their dependence on the solar wind/Interplanetary Magnetic Field (IMF) conditions have been investigated. Finally, a controlling factor that leads to the asymmetric reconnection geometry at the magnetopause has been examined.

O autorze

Sun Hee Lee received her PhD in space physics from the University of Alaska Fairbanks. She worked with Professor Hui Zhang at the Geophysical Institute and Physics Department of UAF from 2010 to 2015. She was awarded NASA Earth and Space Science Fellowship from 2011 to 2014 and currently works at NASA Goddard Space Flight Center as a NASA Postdoc.