a full inversion taking into account horizontal, vertical flows, and ... OLA method. regularization by hand. solutions for two depths are shown (3Mm and 14 Mm) ...
Helioseismic Holography & some experiments on 'field effects' in CR1988 ... 3 x 3 mosaic covering 120 x 120 each tile: 40 x40 (cropped from 60 x60 box) ...