The quake damage may exceed 1 billion dollars, and at least one person was killed. google_ad_width = 200; The region has a history of large earthquakes - most recently a magnitude 6.5 in 1965 and a 7.1 in 1949. Subduction Zone or Megathrust Quakes occur on the interface between the North American plate and the Juan de Fuca plate, a small plate extending from northern California to British Columbia. Earthquakes are caused by the abrupt release of this slowly accumulated strain. It was a result of normal faulting within the descending slab, but it has not been possible to determine which of the two possible fault planes indicated by the focal mechanism is correct. Live in the Seattle area long enough and you’ll experience an earthquake.

Summary authors & editors: Martin Ruzek. Provided by: Paul Morin, University of Minnesota The earthquake, which was measured at 6.8 on the Richter scale, closed the Seattle-Tacoma airport, prompted searches for people trapped in … The quake damage may exceed 1 billion dollars, and at least one person was killed. Interact: var addthis_pub="usra";Share | Discuss on Facebook | Subscribe, , Earth Science Picture of the Day is a service of, 3D VRML Visualization of the Data (requires CosmoPlayer), CosmoPlayer viewing software (Windows only), IRIS page on Seattle quake (visualizations and more). Some you may not even feel.
Most earthquakes in the Northwest are minor. The image above is a snapshot of a 3 dimensional visualization of the earthquake region. /* Archives 200x200 */ The region has a history of large earthquakes - most recently a …

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At 10:54 a.m. on February 28, 2001, a deep earthquake centered near the Nisqually Delta northwest of Olympia startles the entire Puget Sound region and causes more than $1 billion in damage to area buildings and roads.

The Cascadia Subduction Zone, which is the convergent boundary between the North America plate and the Juan de Fuca plate, lies offshore from northern-most California to southern-most British Columbia.

google_ad_client = "pub-1182166660032404"; Seattle Tacoma Area, Washington has had: (M1.5 or greater) 1 earthquake in the past 24 hours 3 earthquakes in the past 7 days; 8 earthquakes in the past 30 days

The two plates are converging at a rate of about 3-4 cm yr; in addition, the northward-moving Pacific plate is pushing the Juan de Fuca plate north, causing complex seismic strain to accumulate.

On February 28, 2001 at 10:54 am the Seattle / Olympia, Washington area was rocked by a magnitude 6.8 earthquake. Washington is situated at a convergent continental margin, the collisional boundary between two tectonic plates. google_ad_slot = "7812802037";

The earthquake was an intraslab event within the Juan de Fuca Plate. The tick marks on the map's depth axis represent 10 km distances down into the earth; the depth axis has been exaggerated three times normal so the data can be more easily read.

Others, like the 2001 Nisqually Earthquake, are large enough to feel and cause some damage.

When a 6.9 magnitude quake rocked the …


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