1. The module for region tracking developed for the ring diagrams can be used for this program. There are some local analyses that could benefit from sampling in a polar coordinate system centered on the tracked region which will require some additions to the track_region program. 2. The remainder of the analysis up to the computations of the travel times is currently done in IRAF. This will need to be incorporated into a strategy module. The compiled parts of this code are not currently using the R8800 architecture adequately. The most time-consuming part of the analysis, the crosscorrelations, could benefit by a recoding in C or by a new version of IRAF (supposedly to be ready sometime this year). 3. Inversion has not been done yet on this problem. Actively working on the problem are S. D'Silva and A. Kosovichev. 4. Analysis up to the travel time determination has been done with 17 hours of South Pole data from Jan. 1991. Signatures of wave speed variations and flows have been detected associated with active regions. Some further analysis to try to optimize the spatial resolution of the results will be useful. 5. It would be useful to analyze some higher resolution data, say from La Palma, to see what useful things might be seen. In the above- mentioned South Pole study, there was not enough spatial resolution to resolve supergranulation. It would be very exciting to be able to measure the subsurface supergranulation flow and any associated wave speed variations.This page last reviewed 14 Aug 1995
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