radiation belts st. petersburg (rbspb) meeting: list of interesting storms and events drew l. turner...
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Radiation Belts St. Petersburg (RBSPb) Meeting:List of Interesting Storms and Events
Drew L. Turner and Mike Hartinger
Mini-GEM: Dec. 2010
RBSPb 2010• 18 researchers (incl. students), representing institutions from USA, Russia,
Japan, and EU, met in St. Petersburg, Russia in late July• Workshop website: http://www.i-mp.org/conference/i-mp_2010/• Workshop format, open-discussion talks covering:
– ULF waves– Whistler-mode chorus– EMIC waves– Effects of the plasmasphere– Observational studies– Data assimilation– Instrumentation and upcoming missions
• Tutorial talk by Mike Schulz on the limiting energy spectrum of a saturated radiation belt
• At the end of the workshop, there was a brainstorming session on collaborative projects…
Events List• Radiation belt events with interesting, clear, and/or intriguing
characteristics, e.g.:– Storm-time dynamics– Non-storm enhancements– Sudden dropout/loss events
• A database of these events could (or “should”?) be generated• Database should include details for each event:
– General information and data (i.e. fluxes, solar wind, etc.), – What has been studied previously, include any publications and their
conclusions– What is being studied currently– Recommendations for future study
• This should prove to be a useful reference tool for radiation belt researchers
Examples: BzV
P dyn
KpD
stAE
OMNI2
166 168 170 172 174 176June 1995:– 1 of 2 non/weak-storm
enhancement event– Exhibits a very sudden
enhancement of radiation belt electrons
– No publications on theseThanks to CDAWeb and LANL for online data access; also GPS data courtesy of R. Friedel, T. Cayton, and S. Bourdarie
BzV
P dyn
KpD
stAE
OMNI2
338 340 342 344 346 348
Examples:
Thanks to CDAWeb and LANL for online data access; also GPS data courtesy of R. Friedel, T. Cayton, and S. Bourdarie
December 2000:– 2nd non/weak-storm
enhancement event– Unlike 1st event, this one
exhibits a slower build up of energetic electrons
February 2009: – Small storm with typical main-phase
dropout and strong enhancement– Modeling analysis published in JGR
[Tu et al., 2010]
Examples:
– Data also available from 1st BARREL balloon test flight
– All this information (i.e. data, plots, references, and conclusions) for each event could be stored in one place!
Event Database - Goals
• Select several events that should be studied, are currently being studied, or have already been studied to improve our understanding of radiation belt dynamics
• Incorporate these events into a database that is accessible to the radiation belt research community
• Facilitate collaboration on these events through the database
• Goal today: feedback on potential events and the database; if favorable, structure and location of the database
Proposed Implementation of Database
Event List
Single Event
Topics list
Ongoing Research Previous Publications/short summary
Overview Plots (e.g. Kp) Discussion Board
Lead(s)
Links to data/figures
Summary
www.virbo.org/RBSPb
Discussion: “We think that a large dynamic pressure pulse caused a sudden, dramatic dropout in PSD during this interval”
Topics: Radial Diffusion, Sudden PSD dropouts, Chorus waves
Publications: None
Current Research: Yuri Shprits, reanalysis results
Select June 1991 event
Select Sudden PSD dropout topic
June 1991:– Example of sudden, catastrophic
dropout in phase space density– Reanalysis results show that drop
outs in the radiation belt fluxes occur when the pressure pulse hits the Earth’s magnetosphere
– The correlation between pressure pulses and dropouts suggests that the primary cause of PSD dropouts in the outer portion of the radiation belts is loss to the magnetopause or tail, followed by outward radial diffusion
Example:
Eventswww.virbo.org/RBSPb