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- THE WEEK, Page 16NATIONNot Quite the Big One
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- But the worst jolt in 40 years gives Californians a real scare
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- If anything positive can be said about the strongest
- earthquake to hit California in 40 years, it's that it chose a
- relatively good place and time to strike. Sunday's powerful
- early-morning jolt -- 7.4 on the Richter scale in contrast to
- 7.1 for the 1989 San Francisco Bay area quake -- shook people
- from their beds and houses from their foundations and was felt
- as far away as Colorado and Washington. But it was centered in
- the sparsely populated Mojave Desert, some 100 miles east of Los
- Angeles. A second quake, with a Richter rating of 6.5, struck
- an even more remote region in the San Bernardino Mountains, 20
- miles closer to L.A.
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- Though just one person died last week vs. 62 in the San
- Francisco quake, that death was particularly poignant. The
- parents of Joseph Bishop, 3, had traveled across the U.S. from
- Newburyport, Mass., to visit the town of Yucca Valley for a high
- school reunion; the little boy was killed when a fireplace
- tumbled down on him while he slept. The quake also caused more
- than 400 injuries and $91 million in property damage, along with
- widespread power outages and temporary disruptions to local
- water supplies.
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- While neither of the Sunday quakes hit along the San
- Andreas Fault, where experts believe the Big One will eventually
- strike, both were on faults that intersect it. That could put
- more pressure on the San Andreas and hasten the arrival of a
- mega-quake -- a devastating prospect, since the San Andreas runs
- through the populous Los Angeles basin.
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- Some geologists see last week's quakes as evidence of a
- new, major fault in the making. The San Andreas marks a
- dividing line where two continental plates -- rock pancakes tens
- of miles thick and hundreds or thousands of miles across that
- make up the earth's surface -- are grinding past each other. As
- the plate carrying Los Angeles heads north toward Alaska, it
- scrapes against the plate carrying most of the rest of the U.S.,
- sticking for years and then suddenly spurting forward. Near Palm
- Springs, the San Andreas Fault makes a jog to the west,
- suggesting that it may be trying to take a shortcut along a new
- line of least resistance and that eventually the section near
- Los Angeles may quiet down. That's the good news. Unfortunately,
- it's not likely to happen for another 50 million years or so.
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