Physics
Scientific paper
Dec 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003agufmsh22a0177w&link_type=abstract
American Geophysical Union, Fall Meeting 2003, abstract #SH22A-0177
Physics
7524 Magnetic Fields, 7529 Photosphere, 7594 Instruments And Techniques
Scientific paper
Coronal mass ejections (CME's) are magnetically-driven reconfigurations of plasma in the low-β solar corona; they are the primary drivers of space weather. One way to investigate coronal field evolution before and during such events involves driving MHD simulations of the coronal magnetic field using data from time series of vector magnetograms. Doing so requires specification of a three-component velocity field at the simulated photosphere, consistent with the observed magnetic field evolution in that layer. Unfortunately, such velocity data are not generally available. We have developed a method that finds photospheric plasma velocities consistent with both the flows derived by the familiar techinique of local correlation tracking (LCT), and the field evolution described by z-component of the induction equation. We present results obtained by applying this ``I+LCT'' technique to vector magnetograms, and to ``false'' magnetograms obtained from MHD simulations of photospheric field evolution.
Abbett William P.
Fisher George H.
Welsch Brian Thomas
No associations
LandOfFree
I+LCT: A Method for Determining Photospheric Flows from Magnetograms does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with I+LCT: A Method for Determining Photospheric Flows from Magnetograms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and I+LCT: A Method for Determining Photospheric Flows from Magnetograms will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1644869