Date: Thu, 24 Feb 2005 15:26:21 +0100 From: Angel VenedikovTo: David Crossley , ggpmail@eas.slu.edu Dear Colleagues, We have undertaken some investigations of the proper oscillations of the Earth, generated by the Sumatra quake, on some seismic data (Figure 1 through 3 in the attachment). We use our proper methods, specially developed for similar problems. After David Crossley was so kind to distribute the GGP data, we have made first attempts to study the phenomena on SG data (Figure 4 in the attachment). My preliminary conclusion is that the GGP data provides excellent possibilities for this task. All comments, questions and critics are welcome. Most friendly, Angel Venedikov.