The Cascadia Subduction Zone (CSZ) is a 1,000 km (620 mi) long dipping fault that stretches from Northern Vancouver Island to Cape Mendocino in northern California. The Cascadia Subduction Zone is where the oceanic Juan de Fuca plate is diving underneath the North American plate. They don’t always spend everything they have,” said Brian Atwater of the U.S. Geological Survey Earthquake Hazards Program. Next chance follows the ETS Cycle of 14, 15.5, 14, 12.5, 14 months etc. The Pacific Northwest has experienced 41 subduction-zone earthquakes in the past ten thousand years. New to me! u/Deaconblues18. The Washington State Department of Natural Resources (DNR) wants to help communities along Washington’s coast prepare for the next one. It is a very long, sloping subduction zone that separates the Explorer, Juan de Fuca, and Gorda plates, on the one hand, and the North American Plate, on the other. There have been 41 earthquakes in the last 10,000 years within this fault that have occurred as few as 190 years or as much as 1200 years apart. 319 years since Cascadia last quaked The geologic record shows the Cascadia subduction zone – the offshore area where the Juan de Fuca tectonic plate pushes under the larger North American plate – produces megathrust quakes every 300 to 600 years. Massive damage will occur. Subduction doesn't exist, that's what says me. The Cascadia Subduction Zone is where the oceanic Juan de Fuca plate is diving underneath the North American plate. It's due, according to the scientists. Thanks for the share. Reddit; Wechat; Abstract. The connection not only confirmed that the Cascadia Subduction Zone is active; it placed it among the most powerful subduction zones in the world. Share 674 Tweet Share Reddit ... in a region known as the Cascadia subduction zone. Some say 7.5 magnitude, some 7.8, magma infiltration origin. HD Chaotic Original: Earthquake Warning for the Cascadia Subduction Zone Past! A major earthquake measuring magnitude 6.4, has struck in the Cascadia Subduction Zone off the coast of Oregon. The Cascadia Subduction Zone, which runs from northern Vancouver Island to Northern California, is Canada’s most active earthquake region. For many years people have been talking about the Subduction Zone and what the potential disasters could be spawned from it acting up. New Juan de Fuca plate is created offshore along the Juan de Fuca Ridge.. Seattle Fault Zone. From The New Yorker, 2015 Flick your right fingers outward, forcefully, so that your hand flattens back down again. It's called the Cascadia Subduction Zone. There may have been a lot of “breakage” during the last quake or there could be parts of the fault that didn’t break. Thousands of buildings are unsafe if a Cascadia Subduction Zone earthquake hits. Here’s the first chapter of Doughton’s book , excerpted in Pacific NW Magazine. A recent M6.3 earthquake off the Oregon coast triggered Cascadia concerns. 6. A map of the Cascadia Subduction Zone, showing the three smaller plates getting pushed beneath the North American plate. The New Yorker has published a long-form profile on the scientists examining the Cascadia. The last major CSZ earthquake and tsunami occurred in 1700. The Pacific Northwest is an exciting place to observe geologic processes in action. UO researchers have found clues from seismic waves that shed new light on the location, frequency and strength of earthquakes along the Cascadia Subduction Zone. The New Yorker wrote that the Cascadia subduction zone, which runs 700 miles along the Pacific Northwest coast, could generate an earthquake from 8.0 and 8.6 magnitude if the southern portion of the zone gives way. In most other subduction zones, tectonic plates slide more freely and therefore have more frequent earthquakes, releasing built-up pressure more often. Cascadia subduction zone videos and latest news articles; GlobalNews.ca your source for the latest news on Cascadia subduction zone . 14 comments. Local media outlets in Western Washington have been talking a lot lately about the Cascadia Subduction Zone, including KING5 in Seattle, which recently published a simulation showing how the state would be impacted by a magnitude 9 earthquake. Above all else, we respect everyone's opinions and ALL religious beliefs and creeds. Science points to a large 8.0-9.0 magnitude Cascadia Subduction Zone (CSZ) earthquake ripping across the 800-mile CSZ fault line on average once every 200 to 500 years. By using our Services or clicking I agree, you agree to our use of cookies. It’s a hypothetical magnitude-9.0 earthquake that could happen along the Cascadia Subduction Zone, a 1,000 kilometre fault line that runs from … Archived. It has been 320 years since the last major earthquake hit the Cascadia subduction zone. Also, I read that a LOT of housing/structures in Portland are brick, etc. The undersea Cascadia thrust fault ruptured along a 1000 km length, from mid Vancouver Island to northern California in a great earthquake, producing tremendous shaking and a huge tsunami that swept across the Pacific. It separates the Juan de Fuca and North America plates. The CSZ is different than most subduction zones in that it is "locked." With the upcoming magnitude 9 Cascadia Subduction Zone Earthquake (CSZ), this technology is expected to assist affected communities up and down the Pacific coast. Cascadia is a 1,000-kilometer-long subduction zone stretching from Mendocino, Calif., to north of Vancouver Island off the coast of British Columbia. Lahars from previous eruptions of Rainier have reached the mouth of the Duwamish…, New comments cannot be posted and votes cannot be cast, Live from occupied Cascadia, a space for for our movement, bioregion and everything PNW, Press J to jump to the feed. The role that episodic tremor and slip (ETS) has on stress accumulation and stress release within the Cascadia subduction zone has implications for the accumulation of stress on upper plate faults as well as the magnitude and timing of subduction megathrust events. Last year, scientists published a model of how Grays Harbor and Pacific County would be hit with a massive wave following a 9.0 earthquake along the Cascadia Subduction Zone, the fault line that runs about 600-miles along the West Coast. The Cascadia Subduction Zone (CSZ) "megathrust" fault is a 1,000 km long dipping fault that stretches from Northern Vancouver Island to Cape Mendocino California. What do you know about it? The quake took place at 11:08 AM eastern US time Thursday at a very shallow depth of only 12km. John F. Cassidy, Robert M. Ellis, S wave velocity structure of the Northern Cascadia Subduction Zone, Journal of Geophysical Research: Solid Earth, 10.1029/92JB02696, … Update 10/18/2020 A new Slow-Slip Event (SSE), aka Episodic Tremor and Slip (ETS) began in the northern section (Wrangellia Zone) of the Cascadia Subduction Zone on 10/4/2020, according to the PNSN. Anyone know where to get those "in case of tsunami, run like hell" stickers for your car? Those living along this stretch are occasionally treated to some shaky moments by the subduction of the … It contains many features of a textbook subduction zone, with the exception of having extraordinarily low earthquake rates. And, yes, I read that volcanic activity (Mt. Seven of its volcanoes have erupted since the start of the 18th century. Using Reddit. The CSZ extends for nearly … The Cascadia Subduction Zone, located in the U.S. Pacific Northwest and southwestern British Columbia, has hosted magnitude ≥8.0 megathrust earthquakes in the geologic past, a future earthquake is imminent, and the potential impacts could cripple the region. With little or no warning, the Cascadia Subduction Zone will produce a catastrophic earthquake and accompanying tsunami that will essentially destroy everything west of Interstate 5 in the Pacific Northwest. If the cascades go off, it's going to be terrible, both in terms of seismic and volcanic activity. After news of … The Cascadia Subduction Zone, located in the U.S. Pacific Northwest and southwestern British Columbia has hosted magnitude ≥8.0 megathrust earthquakes in the geologic past; a future earthquake is imminent, and the potential impacts could cripple the region. Advertisement. ), a M4.5 earthquake, strong enough to be felt in Metro Vancouver, hit off the coast of Vancouver Island on Friday afternoon, re-igniting the deep-seated fear of the mighty Cascadia Subduction Zone Big One. Seems like the Cascadia Subduction Zone is hot, surprising the experts such that they've never seen before. This is a forum for free thinking, not hate speech. “Faults tend to be pretty good at this. Terms | … Print. ern Cascadia subduction zone. When the ‘big one” hits the Cascadia Subduction Zone, it’s game-over for Seattle. On … The Seattle Fault Zone extends east-west through the very middle of the city. If you believe the evacuation signs. r/Cascadia: Live from occupied Cascadia, a space for for our movement, bioregion and everything PNW Cascadia subduction zone. save hide report. 2 years ago. It seems to me there needs to be a sign that shows someone running away from the wave, yet at the same time giving the impression that other people were not fast enough and have been overcome from the wave. Evidence has been obtained for the accumulation of elastic strain across the northern Cascadia subduction zone that may be released in a future very large subduction thrust earthquake. Recent subduction zone fault earthquakes around the world underscore the similar challenges we will face when Quakes along this zone could be as large as magnitude 7.5. help Reddit App Reddit coins Reddit premium Reddit gifts Communities Top Posts. This is an extremely dangerous development. In most other subduction zones, tectonic plates slide more freely and therefore have more frequent earthquakes, releasing built-up pressure more often. Press question mark to learn the rest of the keyboard shortcuts. New Juan de Fuca plate is created offshore along the Juan de Fuca ridge. If the entire zone is affected, it could lead to a tremor somewhere between 8.7 and 9.2 magnitude. Abstract Southwest British Columbia has the potential to experience large‐magnitude earthquakes generated by the Cascadia Subduction Zone (CSZ). Credit: USGS. Tsunami to the Northwest. and not even remotely capable of withstanding that kind of Activity. Evidence has been obtained for the accumulation of elastic strain across the northern Cascadia subduction zone that may be released in a future very large subduction thrust earthquake. New Juan de Fuca plate is created offshore along the Juan de Fuca Ridge.. 9.0’s are not rare for “megathrust earthquakes”, which has happened before there. Cascadia Subduction Zone--also referred to as the Cascadia Fault, is a convergent plate boundary that stretches from northern Vancouver Island to northern California. It also explains the science behind the Cascadia Subduction Zone. Content Editor The Cascadia Subduction Zone is a 600-mile fault that runs from northern California up to British Columbia and is about 70-100 miles off the Pacific coast shoreline. The Cascadia subduction zone, where the Juan de Fuca plate subducts beneath North America, presents one of the greatest earthquake hazards in the U.S. Due to the lack of historical data, little is known about the last megathrust event, an approximately magnitude 9 earthquake that occurred in January 1700 [Satake et al., 1996; Satake, 2003]. The Cascadia subduction zone is a region where two tectonic plates are colliding. While we are preparing for the 320th birthday of the M9.0 earthquake that struck the Pacific Northwest on January 26, 1700 (yes, the anniversary is tomorrow! https://www.reddit.com/r/Cascadia/comments/3nd8gu/cascadia_subduction_z… ** Several years ago, a journalist for the New Yorker wrote a column that revealed the destructive potential of Cascadia being that of 8.7 to 9.2 in magnitude. 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