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Gulf oil leak could take years to subside | If efforts fail to cap the leaking Deepwater Horizon wellhead in the Gulf of Mexico oil could gush for years-poisoning coastal habitats for decades, experts say. Last week the joint federal-industry task force charged with managing the spill tried unsuccessfully to lower a 93-ton
containment dome over one of three ruptures in the rig's downed pipe. Crystals
of methane hydrates in the freezing depths clogged an opening on the box, preventing
it from funneling the spouting oil up to a waiting ship. The scientists seem to
be running out of alternatives, National Geographic reports. "We don't have any
idea how to stop this," Matthew Simmons, retired chair of the energy-industry
investment banking firm Simmons & Company International said of the Gulf leak.
Some of the proposed strategies-such as temporarily plugging the leaking pipe
with a jet of golf balls and other material-are a "joke," he added. "We really
are in unprecedented waters," he said If the oil can't be stopped, the underground
reservoir may continue bleeding until it's dry, Simmons suggested. The most recent
estimates are that the leaking wellhead has been spewing 5,000 barrels (210,000
gallons, or 795,000 liters) of oil a day. And the oil is still flowing robustly,
which suggests that the reserve would take years to deplete. At that rate, it's
possible the Gulf oil spill's damage to the environment will have lingering effects
akin to those of the largest oil spill in history, which happened in Saudi Arabia
in 1991, said Miles Hayes, co-founder of the science-and-technology consulting
firm Research Planning, Inc., based in South Carolina. Up to 89 percent of the
Saudi marshes and 71 percent of the mud flats had not bounced back after 12 years,
the team discovered. "It was amazing to stand there and look across what used
to be a salt marsh and it was all dead-not even a live crab," Hayes said. There
could be similar devastation in US Gulf Coast marshes. As the nurseries for much
of the sea life in the Gulf of Mexico, coastal marshes are vital to the ecosystem
and the U.S. seafood industry. "Once it gets in there, we're not getting it out,"
said Hayes. "We have to hope for the best," says Simmons, "but plan for the worst." |
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