SEISMIC-SOUNDING OF THE OUTER REGIONS OF THE SUN

The inverse scattering problem for recovery of the structure of the reflecting potential is investigated on the basis of the observed phases of acoustic-wave reflection. The linearized formulation of the ill-posed inverse problem, which is solvable with perturbation theory, is used. The perturbation of the potential of the standard model as a combination of five B-splines leads to a constructive solution of the problem of the discrepancies among the frequencies of the 5-min oscillations. The mismatch is reduced by an order of magnitude. The corresponding change in the reflecting potential profile is interpreted as a general increase in the convection efficiency. Agreement in the frequencies of oscillations with large values of l is also achieved.