@ ŒfÚŽGŽi˜ajF “ú–{’nkHŠwƒVƒ“ƒ|ƒWƒEƒ€˜_•¶W VolF 9-1Šª ”NF 1994”N •ÅF 571-576•Å ’˜ŽÒi˜ajF •‘º@‰ë”VC@’r‰Y@—F‘¥ ƒ^ƒCƒgƒ‹i˜ajF ’ZŽüŠúƒf[ƒ^‚©‚猩‚½‚P‚X‚Q‚R”NŠÖ“Œ’nk‚ÌkŒ¹‰ß’ö ´˜^i˜ajF
- ƒL[ƒ[ƒhi˜ajF - ŒfÚŽGŽi‰pjF PROCEEDINGS OF THE JAPAN EARTHQUAKE ENGINEERING SYMPOSIUM ’˜ŽÒi‰pjF Masayuki TAKEMURA, Tomonori IKEURA ƒ^ƒCƒgƒ‹i‰pjF SOURCE PROCESS OF THE 1923 KANTO EARTHQUAKE AS DEDUCED FROM DATA IN SHORT PERIOD RANGE ´˜^i‰pjF
Source process of the 1923 Kanto Earthquake is investigated from the data of old strong motion seismograms at Gifu observatory (¡=226km) and descriptions of about 200 personal experiences near the focal region. The natural period of vertical component of the seismograph at Gifu observatory was about 1 sec. The record in vertical component, which is filtered in the frequency range from 1 to 2 Hz, indicates that two large events occurred at about 10 sec interval in the rupture process of the main shock. Judging from the contents of the personal experiences, the first event occurred near Odawara city and the second event under the Miura Peninsula. ƒL[ƒ[ƒhi‰pjF - ‹LŽ–‹æ•ªF - ‹æ•ª @@@ˆÏˆõ‰ï˜_•¶W