University
of Washington launches effort to prepare Northwest region for 9.0
magnitude quake
26
April, 2014
April
2014
– SEATTLE
— Scientists fully expect that the coast of Washington, Oregon,
British Columbia and part of northern California to see a magnitude
nine subduction zone earthquake again. It’s been 314 years since
the last one in January of the year 1700. Scientists know of this
quake because of written reports from Japan that recorded a tsunami.
The reports of a giant wave also correlate with rings in old trees
killed when marsh land along the Washington coast dropped several
feet, allowing sea water to envelope their roots. This week,
scientists with the University of Washington gathered 55 experts from
around the region. Their goal: to step up efforts to prepare for the
next magnitude nine earthquake in the Northwest and the ensuing
recovery. “That’s the critical part. To be prepared and then to
bounce back.” said John Vidale, Washington state’s seismologist
and head of the Pacific Northwest Seismic Network. Vidale moderated
the event. The project is called M9, as in magnitude 9. But the
lessons learned from it could be applied to any major natural
disaster in Washington, a state that’s currently recovering from
the landslide near Oso on March 22 that killed at least 41 people.
In
addition to earthquake scientists, M9 participants included
structural engineers, transportation experts, and representatives
from the insurance industry, social scientists, oceanographers,
tsunami specialists and emergency managers. The plan is to update the
science to better prepare everything from skyscrapers to bridges to
people in their own homes for when a mega-quake hits. “People may
not be preparing themselves adequately for the kind of disaster
that’s going to happen,” said Ann Bostrom with the U.W. Evans
School of Public Affairs. But she added that the big quake is just
one scenario that threatens people and homeowners. “I do think
about insurance, about the preparations people can do. I think about
the mental preparations people have to do in order to plan for all
kinds of hazards, and what we can do in our risk communications
projects to help people do that,” Bostrom said. Interdisciplinary
efforts have happened before, at meetings and conferences. But this
time it’s a bigger commitment to work together: a three year, $4
million project financed by a grant from the National Science
Foundation. The risk from violent shaking and a tsunami is not just
confined to coastal communities. The Seattle area is also considered
at an elevated risk. The city and some of the surrounding area sits
on a basin of softer soil and rock surrounded by harder materials.
That could trap earthquake waves and cause them to resonate for a
longer period of time, creating more damage. An area of further study
is how those earthquake waves, particularly ones of certain
frequencies will effect tall downtown buildings. -KREM
Small
earthquake strikes off Oregon coast: tension mounting on dangerous
Cascadia fault
April
2014 – OREGON - A magnitude 4.7 earthquake struck on Friday off the
coast of Oregon in the Pacific Ocean, the U.S. Geological Survey
said, but it did not trigger a tsunami warning. The USGS said the
quake, which was only 6.2 miles below the seabed, was centered 132
miles west of Bandon, Oregon. The Pacific Tsunami Warning Center
showed no tsunami warning in effect following the small quake.
–Reuters
Major
stress is erupting along a very dangerous region of the Cascadia
Subduction zone – indicating seismic tension on one of the most
dangerous faults in North America is mounting and should be monitored
very closely. -TEP
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