The Office of Emergency Management said Oregon has the potential for a 9.0 magnitude or larger earthquake caused by the Cascadia Subduction Zone and a resulting tsunami … Some noted that no parent earthquake had been felt; they were wondering what had set off the waves. Click layers on and off to customize the information you want to see. As an example, Figure 4.10 presents a simulation of the great 1700 tsunami that was generated by a magnitude 9.0 earthquake on the Cascadia subduction zone. On 11 October 1918, the western coast of Puerto Rico was hit by a major earthquake which caused a tsunami.The 1918 earthquake was caused by an old left-lateral strike-slip fault near the Mona Passage.In 1953, Santo Domingo, Dominican Republic, was affected by the Santo Domingo earthquake.The actual subduction zone (Puerto Rico Trench) has not ruptured in over 200 years, … Cascadia Subduction Zone. The Seattle Hazard Explorer provides information about the hazards we face and gives you access to the same data that informs citywide emergency planning.. Use the map to the right to view data for a variety of hazards. So Lay isn’t suggesting that an earthquake in Japan or Sumatra is going to trigger a big one in the Cascadia subduction zone, the line along the coasts of Washington… Before the seismic discovery of the Cascadia Subduction Zone. Zoom in to or search for locations that are of interest to you. Track individual visitors using your website in real-time. A major Cascadia Subduction Zone or Seattle Fault event would cause tens of billions of dollars in damages, hundreds of fatalities, and destroy regional transportation, communications, and utility networks. Samurai, merchants, and villagers wrote of minor flooding and damage. The Pacific Northwest is an exciting place to observe geologic processes in action. A subduction zone is a plate boundary along which one plate of the Earth’s outer shell descends (subducts) at an angle beneath another (Figure 4-14). Add to your site in minutes! A puzzling tsunami entered Japanese history in January 1700. Before anyone knew the scale of preparation required to protect against a massive tsunami-generating earthquake—not half a … They had no way knowing that the tsunami had been spawned during an earthquake along the coast of northwestern North America. After 1 hour, the leading tsunami wave crest has already inundated the local coastlines of Oregon, Washington, and Vancouver Island and has reached as far south as San Francisco. The tsunami generated by the 1964 magnitude 9.2 earthquake in the Gulf of Alaska (Prince William Sound) caused damage and loss of life across the Pacific, including Alaska, Hawaii, California, Oregon, and Washington. In northern California, the Cascadia subduction zone ends, and the plate boundary transitions into the San Andreas fault, a strike-slip system between the Pacific and North American plates. A subduction zone is usually marked by a deep trench on the sea floor. An example is the Cascadia Subduction Zone offshore of Washington, Oregon, and northern California (see Figure 4-19 below). Current building standards distinguish between … Understand & grow your traffic with free, live analytics. National Park Service sites in the Coastal Ranges of Washington, Oregon and northern California contain rugged mountains of rocks that were manufactured in the ocean, then scraped off the plate and lifted out of the sea.
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