1. Time Series of Magnetograms: Evolution, Interpretations, Inferring Flows G. Fisher, Y. Li, B. Welsch

2. Discussion Topics G. Fisher: LCT, ILCT Y. Li: LCT applied to data, masking (thr), convergence/cancellation/rotation 1.12 May 1997 2.25-26 Sept. 1996 3.28-29 Oct. 2003 B. Welsch: reality check – FGE data

3. Flare Genesis Experiment Balloon-borne (Antarctic) observations of NOAA 8844, 25 Jan 2000 54 vector magnetograms, ~2.3/5.3 min. per hi-res: 18” pixels (130.5 km), ~520 x 520 pix LCT at t i differenced over t i +/-10, for  t ~85 min. Doppler maps, too! (No info. on method.) Tracking of white light images underway…

4. Test velocity inversion methods… Data movie Doppler movie LCT ILCT MEF

5. FGE Data Movie (BACK)

6. FGE Doppler Map (BACK)

7. LCT Results

8. MEF Horiz (LCT)

9. MEF V_z (DOPPLER)

10. ILCT Horiz (LCT)

11. ILCT V_z (DOPPLER)

12. ADC V_z (DOPPLER)

13. Apparent horizontal motion can be either true horizontal motion, or vertical motion of a tilted field geometry. ILCT: Reinterpret LCT, a la Demoulin & Berger (2003)

14. ILCT, cont’d: Find Similar to MEF, use scalar potentials: As w/MEF: indn eqn. fixes ; ass’d. Instead of minimizing ‘energy’ to find, ILCT uses LCT to constrain :