CGS Special Report 203L .

USGS Open File Report 2007-1437L . By Arthur D. Frankel1 and Mark D. Petersen1. An ocean data buoy is alerting to an “event” in the Cascadia Subduction Zone off the west coast of Oregon.This is where a magnitude 9 earthquake hit in 1700. Appendix L: Cascadia Subduction Zone . Our research cruise is happening along the continental margin behind the subduction zone itself. No one knows when it will happen again: …

Block diagram illustrating an idealized geological setting offshore the state of Washington.

The synchroneity of a 10,000-year turbidite-event record for 500 km along the northern half of the Cascadia subduction zone is best explained by paleoseismic triggering by great earthquakes. Details. Detailed Description. The Cascadia Subduction Zone has remained locked, loaded, and quiet despite all this tumult elsewhere in the world. USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards. Get prepared for the Next Cascadia Subduction Zone Earthquake. According to the data buoy, the water column height (depth) fell sharply within minutes off the coast of Oregon, signaling the land beneath the ocean has suddenly “sunk.” The primary subduction zone we study is the Cascadia Subduction Zone, where the Juan de Fuca Plate is sliding beneath the North American Plate. Though it produced a few small earthquakes within the “locked zone”, none of the larger earthquakes so prevalent in other subduction zones around the world have happened here.

Subduction is the process of the oceanic lithosphere colliding with and descending beneath the continental lithosphere. Image Dimensions: 369 x 239. It runs 700 miles underwater along Pacific Northwest, from Canada to California.

subduction zone » subduction. Similarly, we find a likely synchronous record in southern Cascadia, including correlated additional events along the southern margin.

That subduction zone is largely responsible for the Cascade Volcanic Range, as well as significant … Subduction zone earthquakes represent some of the most devastating natural hazards on Earth. 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. As the subducting Juan De Fuca tectonic plate dives beneath North America, it can generate an earthquake, and trigger a tsunami. The Pacific Northwest is the site of the Cascadia subduction zone, where an oceanic tectonic plate (the Juan de Fuca plate) is being pulled and driven (i.e., subducted) beneath a continental plate (the North American plate). Date Taken: Monday, … USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards ... All Terms « strong motion. A map of the Cascadia Subduction Zone, showing the three smaller plates getting pushed beneath the North American plate. The Cascadia subduction zone could deliver the worst earthquake in North America. The last time the Cascadia subduction zone burped up a massive, zone-wide earthquake was way back in 1700. The Cascadia Subduction Zone. One of the best documentary film available right now is Cascadia, The Big … Inform you. It separates the Juan de Fuca and North America plates.

Two Contrasting Models of Lithospheric Structure. Version 1.0 New Juan de Fuca plate is created offshore along the Juan de Fuca ridge.

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.

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SCEC Contribution #1138L . Detailed Description . Thumbnail Medium Original.

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