"When
a magnitude 6.8 earthquake shook Olympia, Wash., in 2001, shopowner
Jason Ward discovered that a sand-tracing pendulum had recorded the
vibrations in the image above.
Seismologists say that the
“flower” at the center reflects the higher-frequency waves that arrived
first; the outer, larger-amplitude oscillations record the
lower-frequency waves that arrived later.
'You never think
about an earthquake as being artistic — it’s violent and destructive,”
Norman MacLeod, president of Gaelic Wolf Consulting in Port Townsend,
told ABC News. “But in the middle of all that chaos, this fine, delicate
artwork was created.'"
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