http://www.google.com/hostednews/ap/article/ALeqM5hqWSYEtLLH1GAXBH2GV-HsR3rBdAD9E4SKO00Chile was ready for quake, Haiti wasn't
By FRANK BAJAK (AP)
PORT-AU-PRINCE, Haiti — The earthquake in Chile was far stronger than the one that struck Haiti last month — yet the death toll in this Caribbean nation is magnitudes higher. The reasons are simple. Chile is wealthier and infinitely better prepared, with strict building codes, robust emergency response and a long history of handling seismic catastrophes. No living Haitian had experienced a quake at home when the Jan. 12 disaster crumbled their poorly constructed buildings.
And Chile was relatively lucky this time. Saturday's quake was centered offshore an estimated 21 miles (34 kilometers) underground in a relatively unpopulated area while Haiti's tectonic mayhem struck closer to the surface — about 8 miles (13 kilometers) — and right on the edge of Port-au-Prince, factors that increased its destructiveness.
"Earthquakes don't kill — they don't create damage — if there's nothing to damage," said Eric Calais, a Purdue University geophysicist studying the Haiti quake. The U.S. Geological Survey says eight Haitian cities and towns — including this capital of 3 million — suffered "violent" to "extreme" shaking in last month's 7-magnitude quake, which Haiti's government estimates killed some 220,000 people. Chile's death toll was in the hundreds. By contrast, no Chilean urban area suffered more than "severe" shaking — the third most serious level — Saturday in its 8.8-magnitude disaster, by USGS measure. The quake was centered 200 miles (325 kms) away from Chile's capital and largest city, Santiago.
In terms of energy released at the epicenter, the Chilean quake was 501 times stronger. But energy dissipates rather quickly as distances grow from epicenters — and the ground beneath Port-au-Prince is less stable by comparison and "shakes like jelly," says University of Miami geologist Tim Dixon. Survivors of Haiti's quake described abject panic — much of it well-founded as buildings imploded around them. Many Haitians grabbed cement pillars only to watch them crumble in their hands. Haitians were not schooled in how to react — by sheltering under tables and door frames, and away from glass windows. Chileans, on the other hand, have homes and offices built to ride out quakes, their steel skeletons designed to sway with seismic waves rather than resist them...
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