by Mitch Battros-Earth Changes Media March 12th, 2014 seems as though the 6.9 magnitude earthquake which just off the coast of northern California was just a whimper not to be overly concerned. But you won’t find a single seismologist who would agree with such a notion. In fact, it would appear every seismologist, geologist, and volcanologist is on high alert knowing the potential danger hovering like a mist over the entire west coast. Pay Attention: Within minutes of the northern California 6.9 event, modern 3.0 to 4.0 quakes popped up just north of Washington State on the border with Canada. Within this same period, a volcano in Alaska light-up. Now, just minutes before this article, a 5.1 mag. quake hit just off the coast of Oregon. Put these events together and you just outlined the Cascadia Subduction Zone; one of the most volatile and dangerous zones along the entire North American continent.This is not a time to panic, but you would be foolish not to be reasonably prepared. I have placed a few suggestions at the bottom of this article. Also Pacific Northwest has a 40% chance of being hit by a magnitude 8 or larger earthquake in the next 1 to 50 years. That's more than double previous estimates of a 10-15% risk. Great Subduction Zone earthquakes are the largest earthquakes in the world, and can exceed magnitude 9.0. Earthquake size is proportional to fault area, and the Cascadia Subduction Zone is a very long sloping fault that stretches from mid-Vancouver Island to Northern California. separates the Juan de Fuca and North American plates. Because of the very large fault area, the Cascadia Subduction Zone could produce a very large earthquake. Thermal and deformation studies indicate that the locked zone is fully locked for 60 kilometers (about 40 miles) downdip from the deformation front. Further downdip, there is a transition from fully locked to aseismic sliding.NOTE: The ECM sponsorship initiative continues, however, our low discount rate has been suspended (not good timing) until we can afford to bring it back with more sponsors coming forward. My out-of-pocket expenses are just too high to continue. Watch for updates as this may be re-instated in the next few days. Ocean floor is sinking below the continental plate offshore of Washington and Oregon. The North American Plate moves in a general southwest direction, overriding the oceanic plate. The Cascadia Subduction Zone is where the two plates meet. The zone separates the Juan de Fuca Plate, Explorer Plate, Gorda Plate, and North American Plate. Here, the oceanic crust of the Pacific Ocean has been sinking beneath the continent for about 200 million years, and currently does so at a rate of approximately 40 mm/yr. Major cities affected by a disturbance in this subduction zone would include Vancouver and Victoria, British Columbia; Seattle, Washington; Portland, Oregon; and Sacramento, California.Researchers at Oregon State University, and published by the U.S. Geological Survey, the study concludes that there is a 40 percent chance of a major earthquake in the Coos Bay, Ore., region during the next 50 years. And that earthquake could approach the intensity of the Tohoku quake that devastated Japan in March of 2011. The publication of the peer-reviewed analysis may do more than raise awareness of earthquake hazards and risks, experts say. The actuarial table and history of earthquake strength and frequency may eventually lead to an update in the state’s building codes. Geologists and civil engineers have broadly determined that the Pacific Northwest region is not well prepared for such a colossal earthquake. The tsunami produced may reach heights of approximately 30 meters (100 ft). suggests that the southern Oregon coast may be most vulnerable based on recurrence frequency. Tectonic processes active in the Cascadia subduction zone region include accretion, subduction, deep earthquakes, and active volcanism that has included such notable eruptions as Mount Mazama (Crater Lake) about 7,500 years ago, Mount Meager about 2,350 years ago and Mount St. Helens in 1980. Turbidite systems along the continental margin of Cascadia Basin from Vancouver Island, Canada, to Cape Mendocino, California, United States, have been investigated with swath bathymetry; newly collected and archive piston, gravity, kasten, and box cores; and accelerator mass spectrometry radiocarbon dates.According to Chris Goldfinger, a professor in OSU's College of Earth, Ocean, and Atmospheric Sciences and lead author of the study, the southern margin of Cascadia has a much higher recurrence level for major earthquakes than the northern end and it is overdue for a rupture. However, that doesn't mean that an earthquake couldn't strike first along the northern half, from Newport, Oregon, to Vancouver Island. Major earthquakes tend to strike more frequently along the southern end - every 240 years or so - and it has been longer than that since it last happened. The probability for an earthquake on the southern part of the fault is more than double that of the northern end. the past 10,000 years, there have been 19 earthquakes that extended along most of the margin, stretching from southern Vancouver Island to the Oregon-California border. These would typically be of a magnitude from about 8.7 to 9.2 - really huge earthquakes. Researchers have also determined that there have been 22 additional earthquakes that involved just the southern end of the fault. The last mega-earthquake to strike the Pacific Northwest occurred on Jan. 26, 1700. Written records in Japan document how an ensuing tsunami destroyed that year's rice crop stored in warehouses.The clock is ticking on when a major earthquake will next strike, Jay Patton, an OSU doctoral student and a co-author on the study. it hits:Violent shaking may last two minutes or more. The ocean floor will drop, most likely creating a tsunami that will strike long stretches of the coast. The central Olympic peninsula will suddenly rise, while some coastal areas will sink below sea level.If an earthquake occurs at or near coastlines: - Drop, cover and hold. Get under a sturdy object and hold on. Watch for falling objects.- As soon as the shaking is over, move to high ground or inland. Do not wait for an official warning.- Stay away from the coastal waters. Waves may continue to arrive for hours.- Listen to your local radio station for an official "All Clear" notice before returning to the coastal area.- Be alert for aftershocks.Protect yourself and your family: - Develop a family disaster plan. Everyone needs to know what to do on their own to protect themselves from an earthquake.- Be familiar with local Emergency Management earthquake and tsunami plans. Know where to go to survive a tsunami.- Be prepared to survive on your own for a minimum of three days.- Prepare a disaster supply kit for your home, automobile and work.Take a first aid course and learn survival skills. Knowledge is your greatest defense against potential disaster.ECM SUSPENDED - It's Time to Join ECM - Because It's That Important Currently Suspended - Watch for re-installed in the next few daysFor 781235, SAN ANTONIO, TX 78278We are reducing our cost of the ECM news service due to current high-risk events. It has always been our mission to be a conduit to 'you'. Unlike any other news service, we get our information direct from top scientists in geo-physics(earth) solar-physics(space), honored elders from indigenous sacred tribes, and front-line emergency management workers from FEMA, Red Cross, Doctors without Borders, and more.No one is more aware than ECM regarding the delicate and needed responsibility of how best to disseminate current and coming events based strongly on highly credible scientific findings and recent discoveries. We give serious discernment on ancient text - telling of prophecy and predictions which have a history of accuracy, and methods of emergency preparedness for both physical and mental stability.
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