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

~~ ~158 Tokuji UtsuTable 1. (Continued )Y M D h m Lat Long Dep M D Y M D h m Lat LongDep M DON O E km ON ‘E km1923 9 1 3 34 35.0 139.5 s 6.0 01923 9 1 3 36 36.0 140.0 s 6.0 01923 9 1 3 39 35.2 139.7 s 6.6 x1923 9 1 3 48 35.4 139.8 s 7.0 x1923 9 1 4 13 35.0 140.0 s 6.4 01923 9 1 4 20 35.1 139.8 s 6.2 01923 9 1 4 30 35.2 139.0 s 6.3 x1923 9 1 5 23 35.4 139.0 s 6.7 x1923 9 1 6 19 35.5 140.5 s 6.5 01923 9 1 7 38 35.5 138.9 s 6.8 11923 9 1 13 52 35.0 140.0 s 6.0 01923 9 2 0 59 35.2 139.5 s 6.0 01923 9 2 2 46 34.9 140.2 s 7.3 11923 9 2 9 27 34.9 140.5 a 7.1 01923 9 2 9 49 35.3 140.6 a 6.3 01923 9 2 13 9 35.3 139.1 s 6.5 01923 9 2 14 16 35.3 139.1 s 6.2 01923 9 4 22 23 34.8 140.3 s 6.1 01923 9 7 17 32 34.4 139.8 a 6.2 01923 9 9 17 11 34.8 139.2 s 5.9 11923 9 17 339 31.0 140.0 150 6.4 01923 9 26 8 24 34.8 139.4 s 6.7 11923 10 3 15 54 35.4 139.1 s 6.4 01923 10 5 13 5 35.4 139.1 s 6.0 01923 10 9 11 22 39.5 141.0 120 6.2 01923 11 3 16 19 29.4 130.8 s 6.8 01923 11 4 20 45 35.7 139.2 s 6.3 01923 11 5 21 27 29.1 130.9 s 7.1 01923 11 6 19 18 29.2 130.4 s 6.5 01923 11 17 20 40 36.2 141.0 s 6.3 01923 11 23 2 32 35.4 139.5 s 6.2 01923 11 25 17 3 23.5 123.2 s 6.4 01923 12 4 23 40 33.3 134.0 s 6.5 01923 12 27 14 39 36.3 141.1 s 6.4 01924 114 20 50 35.5 139.2 s 7.3 31924 1 14 21 5 36.2 140.5 s 6.0 01924 2 2 22 25 35.4 141.2 s 6.3 01924 4 3 2 30 32.0 138.5 350 6.0 01924 5 22 18 8 42.7 142.3 100 6.3 01924 5 28 9 52 48.0 147.0 450 7.4 01924 5 31 12 2 36.4 141.6 s 6.3 01924 5 31 12 4 36.4 141.6 s 6.4 01924 6 30 15 44 45.0 147.5 150 7.6 01924 7 22 14 23 23.7 122.0 s 6.8 01924 8 6 14 22 35.5 140.6 B 6.3 01924 8 12 18 18 33.9 135.2 s 5.9 11924 8 14 18 2 36.2 141.6 s 7.1 01924 8 14 23 27 36.3 142.2 s 6.7 01924 8 17 145 35.6 142.1 s 6.3 01924 8 17 2 10 36.0 142.5 a 6.6 01924 8 25 14 31 36.2 142.0 s 6.7 01924 8 28 23 50 32.4 132.6 a 6.2 01924 9 18 1 8 36.3 140.2 a 6.6 01924 11 25 17 26 45.5 142.0 300 6.7 01924 12 27 11 22 44.0 146.0 150 7.4 01924 12 28 22 54 43.0 147.0 s 7.0 01925 1 18 12 5 47.0 154.0 s 7.4 01925 1 28 4 5 43.5 147.5 s 6.9 01925 2 1 5 24 43.5 148.0 s 6.4 01925 2 2 13 29 42.5 147.5 s 6.2 01925 2 2 19 25 43.0 148.0 s 6.2 01925 2 2 19 48 43.0 148.0 s 6.8 01925 2 2 22 12 43.0 147.5 a 6.3 01925 2 6 17 11 35.6 141.4 s 6.0 01925 2 20 1 2 45.5 150.5 s 7.0 01925 3 27 4 16 30.0 139.0 500 6.3 01925 4 19 15 46 33.0 138.0 350 6.8 01925 4 19 20 41 38.6 142.2 s 6.3 01925 5 15 18 25 30.5 138.5 400 6.0 01925 5 20 11 4 30.5 142.5 s 6.0 01925 5 22 9 40 30.5 142.0 s 6.3 01925 5 23 2 9 35.6 134.8 s 6.8 51925 5 25 16 22 35.6 134.8 s 6.3 01925 5 27 2 29 37.5 134.0 400 6.9 01925 6 2 5 18 41.3 142.0 s 6.4 01925 6 23 4 43 42.5 142.3 100 6.2 01925 7 3 19 20 35.5 133.3 8 5.8 11925 7 6 16 46 35.4 136.5 a 5.8 11925 8 10 0 37 33.3 130.9 s 4.4 11925 10 20 9 41 28.0 140.0 400 6.4 01925 11 10 14 44 39.0 143.5 s 6.0 0Data and time are in GMT. Letters “8” and “d” mean shallow (h < 100 km) and deep(h 2 100 km), respectively. Asterisks (*) indicate magnitudes estimated mainly fromtsunami data and/or amplitudes of long-period seismic waves at distant stations. The lastcolumn headed “D” gives the damage rating (see text).where n is the frequency of earthquakes of magnitude M, and N is the cumulativefrequency (n = -dN/dM). The logarithm of likelihood function is -247.04 forU, -247.19 for L, and -246.76 for M. Therefore the Makjanit formula is the bestin this particular case, but the difference among the three 3-parameter formulas isvery small.