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

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406 S. MayamuraTable 3. Earthquakes outside Japanese area, M 2 7.0, in <strong>the</strong> catalog of WDC-A Report SE-22 (1979) (SE22), which are not listed in <strong>the</strong> standard catalogs:Gutenberg and Richter (1954) (GR), RothC (1969) (RO), Duda (1965) (DU), Abe(1981) (A) and Abe and Noguchi (1983 a, b) (AN, AN’).Year Date Time Lat. Lon. h M Region Rem.1918 08.18 20.5 S 178.5 W 300 7.2 W. of Tonga Is.1927 12.04 34.5 N 121.5 W 7.3 Off Coast of Calif.1932 10.10 10.0 S 161.0 E 7.7 Solomon Is. *1932 11.02 32.0 S 131.5 W 7.5 N. Pacific Ocean1941 02.11 14:35 15.2 N 094.4 W 7.0 Near Coast of Oaxaca, Mexico1944 01.10 20:09 18.1 N 100.6 W 7.0 Guerrero, Mexico1945 04.15 35.0 S 178.0 W 7.0 E. of N. Is. NZ1945 06.03 13:05 08.3 N 082.6 W 7.0 Pan am a- Cos t a Rica border1946 05.16 01.0 S 098.0 E 7 .O S. Sumatra1948 06.18 00:53 06.5 S 155.0 E 7 .O Solomon Is.1948 08.11 10:36 17.7 N 095.2 W 30 7.0 Oaxaca, Mexico1949 05.30 01:32 20.8 S 069.0 W 100 7.0 N. Chile1950 01.02 15:14 11.5 S 165.4 E 150 7.0 Santa Cruz Is.1950 09.23 17.5 S 177.5 W 400 7.0 W. of Tonga Is.1950 11.06 2222 07.2 S 155.3 E 7.0 Solomon Is.1951 03.19 09.5 N 127.3 E 7.8 Philippine Is. region*1951 04.14 00:45 24.0 S 066.5 W 250 7.0 Salta Province, Argentina1952 09.30 12:52 28.5 N 102.0 E 7.1 Szechwan, China1952 11.29 08:25 53.0 N 160.0 E 7.0 Near E. Coast of Kamchatka1954 04.29 11:34 29.5 N 029.5 W 7.5 N. Atlantic Ocean1954 11.21 41.0 S 081.0 E 7 .O Mid-Indian Rise (1)1957 07.01 19:30 25.0 N 094.0 E 7.3 Burma-India Border(*) doubtful location and magnitude. Remarks: (1) Oct. 21 41.3 S 80.2 E, MRO = 6.7(RO)?Table 4. Earthquakes outside Japanese area with MRN < MGR in <strong>the</strong> catalogof WDC-A Report SE22 (1979) (SE22 ) based on Rika Nenpyo (1975) (RN).Year Date Time Lat. Lon. O h MRN MGR190719101912191419151915191719171919194304.1812.1607.0708.0411.0111.2102.2008.3101.0112.01235214:4507:5722:41072500:1319:2911:3602:5910:3413.6 N05.0 N63.3 N40.5 N38.9 N32.0 N19.0 N05.0 N19.5 S19.5 S122.9 E125.0 E157.4 W090.5 E143.1 E119.0 w080.0 W075.0 W176.5 W 180069.8 W 807.207.207.107.307.507.007.107.207.757.007.607.507.407.507.707.107.407.307.887.25<strong>from</strong> <strong>the</strong> seismic belts. Table 5(a, b, c) lists several such rare earthquakes as anexample. Figures 1 to 4 show <strong>the</strong> epicenter distributions of those rare earthquakesin SE Asia, Indian Ocean, Pacific Basin (1900- 1965), and Pacific Basin (1964- 1974) ,respectively.

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