[IGPP Everyone] Space Physics Seminar - Spring Quarter - Friday May 10, 2019
Marjorie Sowmendran
margie at igpp.ucla.edu
Tue May 7 09:44:31 PDT 2019
SPACE PHYSICS SEMINAR
DEPARTMENT OF EARTH, PLANETARY, AND SPACE SCIENCES
DEPARTMENT OF ATMOSPHERIC AND OCEANIC SCIENCES
UNIVERSITY OF CALIFORNIA, LOS ANGELES
(AOS M275C, EPSS M288C)
Statistical Study on Two Types Of Flux Transfer Events Observed By MMS Spacecraft
Cong Zhao
EPSS, UCLA
ABSTRACT
The magnetic and plasma structures on the dayside magnetopause are examined with unprecedented detail with the exceptionally high temporal resolution measurements of both magnetic field and plasma properties as well as the capability to disentangle the spatial and temporal variations. This capability is enabled by the closely-formed four-spacecraft-tetrahedron of the MMS mission. With this detailed examination using definitive criteria, we have been able to distinguish and identify different current structures in the vicinity of magnetopause, namely: the magnetopause current layer, flux transfer events (FTEs), and the magnetosheath field enhancement (MFE). Furthermore, with observations from MMS, the detailed properties of FTEs are studied for their better understanding. With these detailed analyses, we then show that there are two types, one with mixed plasma originated from two regimes (type A) and the other without the mix of signatures (type B); and that these two types of FRs are the same phenomena. Both FTEs are generated by dayside magnetic reconnection and are responsible for the magnetic flux transfer.
Friday, May 10, 2019
Room 6704 Geology
3:30 - 5:00 PM
In-Charge: C. T. Russell
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