1. Overview of C2 mission and event Science Meeting Dartmouth 29-30 October 2009

2. Science objectives and questions (1) Does dynamic aurora move with respect to the background ionosphere? How much? Does it matter? (2) What is the spatial as compared to temporal variation of auroral parameters like B and E? What does this mean for theories of energy transfer? (3) Alfven waves carry disturbances and changes down to and through the auroral zone, giving us structured and dancing aurora. They are pretty: do they matter? Are these structures significant for magnetosphere/ionosphere coupling? Do direct observations of these motions validate theories and models?

3. BoBo PFRR PFISR Toolik Kaktovic E and B along B o e- across B o Fast e- down B o Image down B o Ground cameras Radar

8. VLF ELF Ions e- DCE

9. Array size: 4-6 km along B ~0.5 km across B Structure: 2 km wide footpoint 100-200 km

10. Alfven waves: velocity? For a several km wide structure In a density of around 10^4/cc at our altitudes 3000 km/sec is reasonable for a parallel phase speed

12. Themis Where we want it

13. Afternoon plan 1-2: overviews: K: overview of mission and event (10) Meghan: overview of particle data (5) Erik: overview of fields data (5) Hanna: overview of camera data (5) (Jim: overview of HF data) Marc: status of onboard camera (5) JohnB: view of event from Themis point of view (15) 2-2:30 Hanna: camera data analysis: keograms, stereo view, energy fluxes 2:30-3 K: PFISR, ERPAs, HT: densities and spacecraft potential 3-3:30 Coffee run 3:30-4:15 Meghan (John, Hanna): detailed PBI classifications of the event: macro 4:15-5:00 Erik (Meghan, K): details of vortex structures and particle motion; mag analysis and microphysics 5-5:30 all: generation of discussion-topic list for Friday morning