FG: The Magnetosheath - Revision history

Peterchi: Revise 2013 schedule

2013-06-16T14:00:35Z

Revise 2013 schedule

Gemeditor at 01:31, 12 June 2013

2013-06-12T01:31:47Z

Gemeditor: Add FG sessions at 2013 Summer Workshop

2013-06-12T01:17:08Z

Add FG sessions at 2013 Summer Workshop

Gemeditor at 19:43, 29 July 2012

2012-07-29T19:43:38Z

Gemeditor at 19:42, 29 July 2012

2012-07-29T19:42:45Z

Gemeditor at 15:41, 22 April 2010

2010-04-22T15:41:14Z

Gemeditor: New page: Chairs: Steven Petrinec and Katariina Nykyri

2010-04-06T20:50:46Z

New page: Chairs: Steven Petrinec and Katariina Nykyri

New page

Chairs: Steven Petrinec and Katariina Nykyri

@@ Line 9: / Line 9: @@
 * Afternoon Session: 1:30 - 3:00 pm
-Scheduled Speakers:
+Scheduled Presentations:
-* Katariina Nykyri
+* Katariina Nykyri: Statistical study of magnetosheath properties using 6+ years of THEMIS data
-* David Sibeck
+* Brian Walsh: X-ray emissions from the Earth's magnetosheath
-* Brian Walsh
+* Andrey Samsonov: Influence of IMF cone angle on magnetosheath parameters: isotropic and anisotropic MHD results
-* Andrey Samsonov
+* David Sibeck: The magnetosheath at lunar distances
-* Nick Omidi
+* Nick Omidi: Generation of large scale density and temperature structures in the magnetosheath
-* Chih-Ping Wang
+* Jean Berchem: 3D Global Hybrid – Global MHD Comparisons
-* Viacheslav Merkin
+* Viacheslav Merkin: Kelvin-Helmholtz instability of the magnetospheric boundaryin a 3-dimensional global MHD simulation during northward IMF conditions
-* Ted Fritz
+* Ted Fritz: TBD
 ([http://gem.epss.ucla.edu/mediawikiwiki/images/6/6c/SCHEDULE_Magnetosheath_FG.pdf Focus Group agenda] for download)

@@ Line 5: / Line 5: @@
 == Sessions at the 2013 Summer Workshop ==
-Monday, 17 June (Salon C)
+Date/Room: Monday, 17 June (Salon C)
 * Morning Session: 10:30 am - 12:15 pm
 * Afternoon Session: 1:30 - 3:00 pm

← Older revision		Revision as of 01:17, 12 June 2013
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−	'''Chairs: ''Steven Petrinec ~~and~~ Katariina Nykyri~~'''''~~	+	''Focus Group Co-Chairs:''
		+	* Steven Petrinec
		+	* Katariina Nykyri
		+
		+	== Sessions at the 2013 Summer Workshop ==
		+
		+	Monday, 17 June (Salon C)
		+
		+	* Morning Session: 10:30 am - 12:15 pm
		+	* Afternoon Session: 1:30 - 3:00 pm
		+
		+	Scheduled Speakers:
		+	* Katariina Nykyri
		+	* David Sibeck
		+	* Brian Walsh
		+	* Andrey Samsonov
		+	* Nick Omidi
		+	* Chih-Ping Wang
		+	* Viacheslav Merkin
		+	* Ted Fritz
		+
		+	([http://gem.epss.ucla.edu/mediawikiwiki/images/6/6c/SCHEDULE_Magnetosheath_FG.pdf Focus Group agenda] for download)

	== White Paper ==		== White Paper ==

← Older revision		Revision as of 19:43, 29 July 2012
Line 7:		Line 7:

	== Workshop Report: Summer 2012 ==		== Workshop Report: Summer 2012 ==
−
−	~~FG Leaders: Katariina Nykyri and Steve Petrinec~~

	Magnetosheath FG held three sessions. Sessions had two invited speakers and eight contributed presentations allowing plenty of time for questions, discussion and planning. Research methodology of the session speakers utilized magnetosheath data from various spacecraft missions including Cluster, THEMIS, Geotail etc. The modeling efforts included global hybrid simulations, global and local MHD and Hall MHD simulations and support vector regression machine technique. Also a development of the new global scale Vlasov model with initial results was discussed. We have divided a discussion of the sessions into 1. Highlights, 2. Where We Are Headed, 3. What we Have Accomplished and 4. Concluding Remarks.		Magnetosheath FG held three sessions. Sessions had two invited speakers and eight contributed presentations allowing plenty of time for questions, discussion and planning. Research methodology of the session speakers utilized magnetosheath data from various spacecraft missions including Cluster, THEMIS, Geotail etc. The modeling efforts included global hybrid simulations, global and local MHD and Hall MHD simulations and support vector regression machine technique. Also a development of the new global scale Vlasov model with initial results was discussed. We have divided a discussion of the sessions into 1. Highlights, 2. Where We Are Headed, 3. What we Have Accomplished and 4. Concluding Remarks.

@@ Line 1: / Line 1: @@
-Chairs: Steven Petrinec and Katariina Nykyri
+'''Chairs: ''Steven Petrinec and Katariina Nykyri'''''
-==Call for presentations at 2010 GEM Workshop:==
+== White Paper ==
-'''Magnetosheath studies'''
+* Magnetosheath Focus Group White Paper: 2012-May-11 [http://gem.epss.ucla.edu/mediawikiwiki/images/d/d7/GEM_Msheath_FG_white_paper_V1.pdf (download)]
-The Primary Objectives and Expected Activities of the FG:
+== Workshop Report: Summer 2012 ==
-. To produce more comprehensive models of large scale magnetosheath
+FG Leaders: Katariina Nykyri and Steve Petrinec
-. To improve understanding of magnetosheath plasma instabilities and
+Magnetosheath FG held three sessions. Sessions had two invited speakers and eight contributed presentations allowing plenty of time for questions, discussion and planning. Research methodology of the session speakers utilized magnetosheath data from various spacecraft missions including Cluster, THEMIS, Geotail etc.  The modeling efforts included global hybrid simulations, global and local MHD and Hall MHD simulations and support vector regression machine technique. Also a development of the new global scale Vlasov model with initial results was discussed. We have divided a discussion of the sessions into 1. Highlights, 2. Where We Are Headed, 3. What we Have Accomplished and 4. Concluding Remarks.
-. To develop a better understanding of the effects on magnetospheric
+. Highlights:
-The focus group proposal with specific science questions can be found at
+Heli Hietala showed Cluster observations of  super magnetosonic magnetosheath jets and discussed their possibe generation mechanism to be related to the wavy structure of the bow shock, which could lead to formation of a secondary shock. Jets can have scale sizes 1-6 R_E and produce magnetopause perturbations, magnetospheric pulsations and short local ionospheric convection enhancements.
-http://gem.epss.ucla.edu/mediawiki/pdf/GEM_FG_MSheath_proposal.pdf.
-We especially encourage data-analysts utilizing in-situ spacecraft
+Antonius Otto used 2D MHD and Hall-MHD simulations and showed that there is a significant entropy (non-adiabatic heating) increase at the magnetopause only when magnetosheath beta is low. Entropy production in 2D reconnection occurs in  i) in the diffusion region ii) sometimes through weak fast shock at the leading edge of the steady outflow region, iii) through shocks at the boundary between outflow and inflow region. However, the heating in the diffusion region is likely of small importance because of the small volume ~ ion inertia scale. Also, the nonadiabatic heating is significant in the outflow regions only for small plasma beta. Nonadiabatic heating occurs in Hall dynamics at the same rate (for the same conditions) as in MHD.
-See GEM website for further details: http://www.cpe.vt.edu/gem/
+Katariina Nykyri used 15 Global MHD simulations (BATSRUS hosted at CCMC) to determine the magnetosheath properties during Parker Spiral  (PS) and Ortho-Parker Spiral (OPS) IMF orientation for various solar wind plasma betas and solar wind Mach numbers.  She then generated 30 local simulations at the dawn-dusk terminator at each flank corresponding to global simulations. Results showed that dawn-flank is more Kelvin-Helmholtz unstable for PS orientation which can lead into more plasma heating on dawn-side magnetopause due to reconnection and shocks generated by KHI and due to kinetic Alfven wave generation.
-Best wishes,
+. Where We Are Headed:
-''Katariina Nykyri & Steven Petrinec''
+A) Need to identify the best method for the statistical studies of magnetosheath properties:

← Older revision		Revision as of 15:41, 22 April 2010
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	Chairs: Steven Petrinec and Katariina Nykyri		Chairs: Steven Petrinec and Katariina Nykyri
		+
		+	==Call for presentations at 2010 GEM Workshop:==
		+
		+	'''Magnetosheath studies'''
		+
		+	Magnetosheath focus group will hold sessions at the next GEM workshop on 21-25th of June, 2010 in Snowmass Village Colorado. We invite short presentations related to any of the focus group topics.
		+
		+	The Primary Objectives and Expected Activities of the FG:
		+
		+	1. To produce more comprehensive models of large scale magnetosheath
		+	flow and field patterns, and geometry of the magnetosheath region
		+
		+	2. To improve understanding of magnetosheath plasma instabilities and
		+	wave particle interactions: Spatial distribution and characteristics
		+
		+	3. To develop a better understanding of the effects on magnetospheric
		+	dynamics due to processes occurring in the magnetosheath and due to
		+	characteristic magnetosheath properties.
		+
		+	The focus group proposal with specific science questions can be found at
		+	http://gem.epss.ucla.edu/mediawiki/pdf/GEM_FG_MSheath_proposal.pdf.
		+
		+	We especially encourage data-analysts utilizing in-situ spacecraft
		+	measurements from Themis and Cluster missions, theoretical modelers,
		+	global and local modelers to participate in this workshop and present
		+	your findings. We also encourage presentations of studies of magnetosheaths
		+	around other solar system bodies, as they relate to the terrestrial magnetosheath.
		+
		+	See GEM website for further details: http://www.cpe.vt.edu/gem/
		+
		+	Best wishes,
		+
		+	''Katariina Nykyri & Steven Petrinec''