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.

2 72 T. R. Toppozada, C. R. Real, and D. L. Parkt'.;-35"-50 MILES60KlLOMETERSI(117'Figure 2. Earthquakes of M > 6, 1869-1906. The areas damaged (MM intensity VIIor greater) are outlined. Earthquakes not damaging a definable area are indicated bya square at <strong>the</strong> epicenter. The earthquakes are numbered chronologically according toTable 1.Even with today's population distribution, earthquake damage is a poor indicatorof M > 6 seismicity. There remain unpopulated areas where such earthquakescause no damage. For example <strong>the</strong> M6.4 and M6.3 Mammoth Lakes earthquakesof 25 May 1980 (event 64) damaged a very small area in <strong>the</strong> Sierra Nevada. Also,<strong>the</strong> M6.2 Borrego earthquake of 1954 (event 58) occurred in <strong>the</strong> desert, and causedno significant damage. Comparing Figure 3 with Figures 1 and 2, illustrates that<strong>the</strong> modern record is more complete for earthquakes that were not significantly

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

Saved successfully!

Ooh no, something went wrong!