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Joint Photographic Experts Group Image  |  2001-06-19  |  25.4 KB  |  417x230  |  16-bit (12,945 colors)
   ocr: Rayleigh waves Love waves P-waves S-waves arrive normal background noise - . WWW - - -m amplitude - - VI - low (1 crest every irregular spacing 2-10 seconds) (>40 between seconds crests) regular spacing minute (1 crest every 20 seconds) very high amplitude time