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BEGIN:VEVENT
DTSTAMP:20260524T182525Z
DTSTART;VALUE=DATE-TIME:20241204T163000
DTEND;VALUE=DATE-TIME:20241204T173000
SUMMARY:Clare Watt (Northumbria): Temporal variability of Earth’s outer r
 adiation belt: the connection between observations and models
TZID:Europe/London
UID:20241204-8ac672c7922845770192306564fd4e50@warwick.ac.uk
CREATED:20241127T093654Z
DESCRIPTION:The near-Earth plasma environment is home to a region where h
 igh-energy electrons are trapped by the Earth’s magnetic field\; this re
 gion is known as the outer radiation belt. The amount of high-energy ele
 ctrons and the extent of the belt in space are highly variable in time. 
 The variability of the belt is likely driven by transient structures in 
 the solar wind\, such as coronal mass ejections and corotating interacti
 on regions. The physical mechanisms for the variability of the high-ener
 gy electron flux in the outer radiation belt include the influence of wa
 ve-particle interactions\, injections of high-energy electrons from the 
 tail plasma sheet\, and the action of sudden compressions on the magneto
 sphere. However\, we don’t currently understand the system sufficiently 
 well to be able to reliably connect solar wind variability directly to r
 adiation belt variations. In this seminar\, I will talk about our recent
  work on the variability of processes in the magnetosphere from an obser
 vations perspective. Crucially\, I’ll make the link to how we model the 
 outer radiation belt and locate our current (known!) unknowns. We will t
 ake a tour through substorm injections\, sub-grid wave-particle interact
 ions\, and the action of ultra-low frequency waves\, culminating with pl
 ans for future work and community modelling resources.
LOCATION:PLT
CATEGORIES:Departmental Colloquium
LAST-MODIFIED:20241127T093654Z
ORGANIZER;CN=Valery Nakariakov:
END:VEVENT
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