Earthquake art.
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 r
eflects 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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