Tagged: Earthquakes

If you live in the Northwest, it's hard to escape the knowledge that the possibility of a major earthquake is real. 

Yet, far more than half of residents here are not prepared for such a disaster. Despite frequent campaigns encouraging homeowners to have at least a 3-day supply of emergency water, food and first aid on hand, authorities assume only 30-40 percent of us actually do.

One of the world’s most advanced research ships will be cruising along the Washington and Oregon coasts this month – to look for clues about giant earthquakes. 

A zone that runs parallel to the coast – but deep beneath the sea – is known to have unleashed mega-quakes in the past, similar to the one that caused the giant tsunami last year in Japan. The Cascadia fault zone runs about 700 miles alongside Vancouver Island, Washington and Oregon.

Geologists have discovered two previously unknown earthquake faults – and possibly a third – near Bellingham. The scientists working for the U.S. Geological Survey believe the shallow faults are capable of spawning damaging tremors.

A research grant announced Tuesday will allow seismologists to take the first steps toward an early warning system for earthquakes in the Northwest. An operational system is still a long way off, but it could eventually resemble the computerized warnings pioneered in Japan.

Back in March, some Japanese residents got an alert via cell phone or a TV screen pop-up. The alert warned them that severe shaking would begin within seconds.

Pacific Northwest Seismograph Network director John Vidale says an early warning, even of less than a minute, gives time to prepare.

A 6.4 magnitude earthquake occurred about 73 miles off the coast of Vancouver Island at 12:41 this afternoon. There are no reports of damage or injuries. A Royal Canadian Mounted Police dispatcher in Tofino, British Columbia, said most people there barely felt the quake. 

Washington State Department of Transportation (WSDOT) says it has inspected area bridges and all appear undamaged.

For years top scientists have said a big earthquake near the Hanford Nuclear Reservation is highly unlikely in our lifetimes. Now, a new geological study is being published, and what it says is shaking up assumptions.

If you’re near the coastline and a major earthquake strikes, the advice as always is to scramble for higher ground. But sometimes, high ground is far away. For example, if you’re in Ocean Shores or Seaside, Ore., the best option could be to head for the rooftop of a sturdy building, if there is one.

In Westport, and communities along the Northwest coast,  the horrible and gripping images of destruction from the Japanese earthquake and tsunami are still top-of-mind. In this fishing and beach resort town, retiree Linda Orgel is one of hundreds of coastal residents spurred to become better prepared. That interest is being channeled into planning and design meetings for a possible string of manmade refuge towers.

Earthquake scientists are hoping to build an early-warning system for Washington, Oregon and California.  It would give typically about five to 30 seconds of notice that a big quake was starting. The scientists have been meeting this week to craft a proposal. 

There’s no way to predict earthquakes. But once a big one starts, it sends out different kinds of shock waves that move at different speeds. One type is fast-moving, but barely perceptible. These are called P-waves. They arrive before the slow traveling but damaging shock waves (called S-waves).  

So, if you have precise sensors, they can detect the fast-moving waves and send out alarms.