11.07.2015 Views

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

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

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

SHOW MORE
SHOW LESS
  • No tags were found...

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Digitization and Processing of J.M.A. Strong Motion Records 393Table 2. List of <strong>the</strong> <strong>Seismograms</strong>Earthquake Station # V Natural Damping Arm Paperperiod factor (h) length speedNS EW NS EW NS EWS anriku- 0 ki(1933. 3. 3)Iwaki-0 ki(1938. 5.23)Fukussima-Ken-Toho-Oki(1938.11.5-6)Tonankai(1944.12. 7)Nankaido(1946.12.2 1)Tokachi-Oki(1968. 5.16)Nihonkai-Chubu(1968. 5.26)Sendai 0MitoMito(1st)C(2nd) C(3rd) CSendai(1st) C(3rd) CMurotomisaki CMishima CSumoto CMiyazkiAkitaS akat aNiigataMoriNiigataTomakomaiICJJJJJJ2 4.0 - -2155 - 207.1 - .39712 5.0 5.0 .4037 .3310 385.9 392.8 -59562 4.5 3.5 .1665 -1480 402.6 390.5 .58342 4.5 3.5 .1665 -1480 403.1 390.5 .58342 4.5 3.5 .1665 .1480 392.1 408.7 .58342 - 4.0 - 21552 - 4.0 - 21552 7.2 7.1 .3301 .33011 5.0 5.5 .1665 .16552 - 4.4 - .30152 - 6.2 - .21551 5.9 5.7 .5519 .55191 6.0 6.0 .5519 .55191 6.0 6.0 ,5519 .55191 6.0 6.0 .5519 .55191 5.9 6.0 .5519 .57311 6.0 6.0 .5519 .5266--362.1306.9--300.0300.0300.0300.0300.0300.0203.7 .5583203.7 .5736497.1 .5717306.9 1.179200.7 .3833284.7 .4372300.0 .5000300.0 -5000300.0 .5000300.0 .5000300.0 .5000300.0 .5000# = Types of seismograph: O=Omori’E, C = CMO, I = Imamura’s, J = J.M.A.;V = Magnification; Natural Period in sec; Arm Length in mm; Paper Speed in mm/sec.Figure 2. Seismogram at Mishima <strong>from</strong> <strong>the</strong> 1944 Tonankai event.

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!