Global Magnetosphere Evolution During 22 June 2015 Geomagnetic Storm as Seen From Multipoint Observations and Comparison With MHD–Ring Rurrent Model

Thursday, 17 December 2015
Poster Hall (Moscone South)
Natalia Buzulukova1, Thomas Earle Moore1, John Dorelli1, Mei-Ching Hannah Fok1, David G Sibeck1, Vassilis Angelopoulos2, Jerry Goldstein3,4, Philip W Valek3,4 and David J McComas3,4, (1)NASA Goddard Space Flight Center, Greenbelt, MD, United States, (2)UCLA, Los Angeles, CA, United States, (3)University of Texas at San Antonio, San Antonio, TX, United States, (4)Southwest Research Institute, San Antonio, TX, United States
On 22-23 June 2015 a severe geomagnetic storm occurred with Dst minimum of approximately -200nT. During this extreme event, multipoint observations of magnetospheric dynamics were obtained by a fleet of Geospace spacecraft including MMS, TWINS, Van-Allen and THEMIS. We present analysis of satellite data during that event, and use a global coupled MHD-ring current model (BATSRUS-CRCM) to connect multipoint observations from different parts of the magnetosphere. The analysis helps to identify different magnetospheric domains from multipoint measurements and various magnetospheric boundary motions. We will explore how the initial disturbance from the solar wind propagates through the magnetosphere causing energization of plasma in the inner magnetosphere and producing an extreme geomagnetic storm.