A major earthquake measuring magnitude 6.4, has struck in the Cascadia Subduction Zone off the coast of Oregon. The quake took place at 11:08 AM eastern US time Thursday at a very shallow depth of only 12km.

This is an extremely dangerous development. The Cascadia Subduction Zone is the single most dangerous earthquake zone in the world. A large rupture of this zone would send Tsunamis into the US west coast, destroying everything west of Interstate 5.

TO have this magnitude quake strike so suddenly is a bad sign or potential worse to come.

At depths shallower than 30 km or so, the CSZ is locked by friction while strain slowly builds up as the subduction forces act, until the fault’s frictional strength is exceeded and the rocks slip past each other along the fault in a “megathrust” earthquake. The fault’s frictional properties change with depth, such that immediately below the locked part is a strip (the “Transition Zone”) that slides in “slow slip events” that slip a few cm every dozen months or so. This relieves the plate boundary stresses there, but adds to the stress on the locked part of the fault. Below the transition zone geodetic evidence suggests that the fault slides continuously and silently at long term plate slip rate. From its surface trace offshore to a depth of possibly 5 km, all remote from land, observations are few and it remains unknown whether the fault is stuck or slipping silently.

Great Subduction Zone earthquakes are the largest earthquakes in the world, and are the only source zones that can produce earthquakes greater than M8.5. The CSZ has produced magnitude 9.0 or greater earthquakes in the past, and undoubtedly will in the future.

The last known megathrust earthquake in the northwest was in January, 1700, just over 300 years ago. Geological evidence indicates that such great earthquakes have occurred at least seven times in the last 3,500 years, a return interval of 400 to 600 years. To learn more about the history of the Cascadia Subduction Zone and the science that led to the discovery of it, delve into land level changes and turbidites created by the CSZ earthquakes. For more about the Cascadia Subduction Zone, visit the USGS webpage discussing this topic.

The CSZ may be unique among the worlds subduction zones in that it produces very few (if any) earthquakes unambiguously on the plate interface. Coupled with evident occurrence of great megathrust earthquakes, the CSZ must be much more strongly locked than other subduction faults. The geological evidence has led to different interpretrations, moreover, about whether the entire CSZ always ruptures in great M9 earthquakes, or whether smaller M8 or M8.5-sized events also can break parts of the zone in between the full rupture events.

The M9 Project is a team of experts whose goal is to reduce catastrophic potential effects of a Cascadia megathrust earthquake on social, built, and natural environments through the advancement of methodologies, early warnings, and community planning.

The challenges start with assessing the range of distributions of fault motion and, therefore, the shaking and tsunamis that the Cascadia fault might generate. The project addresses factors not previously considered, including the distribution and timing of energy release on the fault, the coherent variation of frequency content of fault motion with fault depth, and the 3D effects of the deep basins along Puget Sound—and will specify the uncertainty in the estimated motions, which is critical to probabilistic estimation of earthquake impact, including liquefaction, landslides, tsunamis, and built infrastructure response.

The project will develop new probabilistic, statistical, and numerical methodologies to provide deeper insight into these phenomena. The project’s research will improve forecasting of landslides and liquefaction through better resolution of the underlying physics with recent data from Japan and Chile. It will also improve estimation of tsunami effects by developing more realistic scenarios of seafloor deformation and by estimating the battering power of entrained debris. Built-environment response to the unique long-period and long-duration ground motions will be evaluated probabilistically using advanced numerical simulation. To inform the development and deployment of earthquake early warning in the U.S., the project includes interview and survey research on the potential effects of messages that provide just a few seconds or minutes of warning. With local communities and agency partners, the project will improve the utility of probabilistic information by comparing how stakeholders interpret (a) single “worst case” hazard scenarios and (b) multiple probabilistic scenarios, and how each type of scenario is then incorporated into community emergency preparedness and long-range planning. The project will also advance the integration of probabilistic assessments into hazards education.

The last decade has provided unexpected lessons in the enormous risks from giant subduction earthquakes of M9. Sumatra 2004, Chile 2010, and Japan 2011 each caused devastation that took scientists and residents by surprise. M9 earthquakes in the Cascadia subduction zone pose the greatest natural hazard in the Pacific Northwest and provide an integrative focus for interdisciplinary research on reducing future losses to extreme events. To address challenges in risk reduction, this project brings together experts from academia, government, and other nonprofit organizations. The shared vision is to reduce the catastrophic risk of a Cascadia M9 earthquake through integrated advances in forecasting, warning and adaptive planning across the social, built and natural environments. The project will move beyond generalized scenarios toward probabilistic predictions of M9 seismic events and the subsequent hazards, with the objective of integrating these into community resilience planning and advancing the state of earthquake early warning systems.

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The Lost Ways 2 program is to reveal all the ancient techniques and secrets used by our forefathers to deal with harsh conditions such as diseases, wars, drought, and other life-threatening conditions.

In this program the author explains how to grow and store these foods for a long time in pit holes. Other than this, you will find a lot other valuable information explained in this guide on topics such as finances, health, and life crisis among others.

Basically the guide covers majorly on the super nutrient foods that can help you survive during times of food shortages. These foods have a longer lifespan which enabled our ancestors to store them even when they didn’t have access to refrigerators and other related technologies.

Inside this document you will discover how the pioneers from the Wild West hunted deer and how they tanned hides without chemicals and without spending a dime. You’ll also find out how to butcher a deer and what parts are best for certain preservation methods.

Lost Way 2 – second edition show you how to use the activated charcoal to build yourself a simple and reliable water filter that can clean 800 gallons of water.

When all the water is contaminated, and all you can find are muddy creeks and pools with diseases running rampant you’ll keep your loved ones drinking crystal-clear healthy water. Activated charcoal pills are very useful in treating acute food and chemical poisoning too.

Books can be your best pre-collapse investment.

Carnivore’s Bible (is a well known meat processor providing custom meat processing services locally and across the state of Montana and more. Whether your needs are for domestic meator wild game meat processing)

The Lost Book of Remedies PDF (contains a series of medicinal andherbal recipes to make home made remedies from medicinal plants and herbs. Chromic diseases and maladies can be overcome by taking the remedies outlined in this book. The writer claims his grandfather was taught herbalism and healing whilst in active service during world war two and that he has treated many soldiers with his homemade cures. )

Easy Cellar (Info about building and managing your root cellar, plus printable plans. The book on building and using root cellars – The Complete Root Cellar Book.)

The Lost Ways (Learn the long forgotten secrets that helped our forefathers survive famines, wars, economic crisis and anything else life threw at them)

LOST WAYS 2 (Word of the day: Prepare! And do it the old fashion way, like our forefathers did it and succeed long before us,because what lies ahead of us will require all the help we can get. Learn the 3 skills that ensured our ancestors survival in hard times offamine and war.)

SOURCE : https://www.prepperfortress.com/major-earthquake-m6-4-off-oregon-coast-in-cascadia-subduction-zone/