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                     **   THE GEM MESSENGER   **
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                                                  Volume 20, Number 35
                                                      December 4, 2010
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Mini-workshop Session on "Substorm Expansion Onset: The First 10 
Minutes"
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From: Vassilis Angelopoulos, Kazuo Shiokawa, Shin Ohtani, and
      Andrei Runov

The GEM Focus Group on "Substorm Expansion Onset: The First 10
Minutes" will have a session at the forthcoming 2010 GEM mini-workshop.

Date: Sunday December 12
Time: 2:30 - 4:00 PM
Place: City Room, Westin San Francisco Market Street hotel (50 Third 
St.)

For a full schedule of the mini-workshop see
http://aten.igpp.ucla.edu/gem/pdf/MiniWorkshopSchedule_GEM2010_r3.pdf

In the 2010 Summer Workshop we discussed substorm initiation processes 
focusing on four issues:
1. Onset timing in space and on the ground: 
observations/theory/simulations
2. How do midtail onset signatures propagate to near Earth and to the 
ground?
3. Ground-Space Mapping of Physical Processes
4. Substorm processes near transition between stretched and dipole 
field lines.

All presentations in this focus group were summarized into a matrix 
showing correspondence of each observation/model result to various 
substorm-onset physical models. The matrix is available at the GEM 
Wiki page (http://www-ssc.igpp.ucla.edu/gemwiki/index.php/FG12._Substorm_Expansion_Onset:_The_First_10_Minutes).

At the mini-workshop we will discuss the current status of studies on 
these issues, the observations vs. models matrix, and will identify 
issues to discuss at the 2011 Summer Workshop.

We invite community members who are interested in any of those items 
to participate in discussion, and we welcome suggestions for future of 
our focus group. Those who are interested in making a brief 
presentation with one or two viewgraphs are encouraged to contact the 
conveners for advanced scheduling.  Please also contact the conveners 
for additional information.

We are looking forward to see you in San Francisco

Vassilis Angelopoulos
Kazuo Shiokawa
Shin Ohtani
Andrei Runov


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