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Historical Seismograms - Evidence from the AD 2000 Izu Islands ...

Historical Seismograms - Evidence from the AD 2000 Izu Islands ...

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Catalogue of Chinese Earthquakes (M 2 6.5)117Table 1. Station Corrections, SvStation Correction Standard Number of PeriodSV deviation, r observations (year.month)Osaka -0.057 0.25 37 1902 - 1920-0.23 0.27 21 1921 - 1930Kobe +0.20 0.38 14 1914 - 1927Strasbourg +o.oo 0.15 12 1921 - 1930-0.24 0.22 18 1931 - 1940-0.46 0.26 10 1941 - 1948Tashkent -0.12 0.24 85 1934 - 1940Vladivos t ok +0.16 0.30 69 1934 - 1940Moscow +0.004 0.17 69 1935.04 - 1940Pulkovo -0.11 0.21 75 1934 - 1940Sverdlovsk +0.13 0.20 51 1934 - 1940Irkutsk -0.014 0.19 28 1934.06 - 1940Baku -0.06 0.17 24 1934 - 1940Hongkong +0.054 0.37 35 1937.08 - 1940.02Jiufeng (Chiufeng) -0.025 0.28 8 1931 - 1935Uppsala -0.23 0.33 10 1941 - 1948Prague -0.24 0.22 24 1941 - 1948h 1100n = 52 n= 7-A< +0.06F=AM 1 +0.07? 0.13ncT= 20.10c\! 0 c\! ? MG-MS 000 9 MG-mgTOO0h= 40-100n n=8h 40-100n n-7OM +0.18 a M +0.070 V MG-Ms00V 0 9 MG-m,B700Figure 2. Statistical comparison of MG (Gutenberg, 1954) with A4s and mg.

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