What fault line caused the 1964 Alaska earthquake?
thrust fault boundary
The 1964 Alaska earthquake resulted from rupture along the thrust fault boundary bet- ween the downgoing Pacific Plate and the overriding North American Plate, causing widespread shaking and tectonic defor- mation.
Did the 1964 Alaska earthquake cause a tsunami?
The earthquake triggered a swell of devastating tsunamis, landslides and submarine slumps which caused massive property damage and loss of life. The death toll reached 131 people: 15 died during the initial tremors and the rest in the subsequent tsunamis and landslides.
How high was the 1964 tsunami in Valdez Inlet and what caused it?
The local tsunamis were generated by landslides, which were triggered by the earthquake. At the Valdez Inlet a large landslide was triggered by the earthquake generated a tsunami that had a run-up measured at 67.0 m in the inlet.
What plate boundary is Alaska on?
Living with Earthquakes in Alaska The southern edge of our state is an active tectonic plate boundary where the Pacific plate subducts (i.e., dives beneath) the North American plate along the great Alaska-Aleutian Megathrust.
How far away could the 1964 Alaska earthquake be felt?
The earthquake was felt throughout most of mainland Alaska, as far west as Dutch Harbor in the Aleutian Islands some 480 miles away, and at Seattle, Washington, more than 1,200 miles to the southeast of the fault rupture, where the Space Needle swayed perceptibly.
What was the depth of the 1964 Great Alaska Earthquake?
1964, March 28, 1964, 03:36:14 UTC. 61.04 N, 147.73 W, depth 33 km, magnitude 8.4 MS, intensity X. Prince William Sound, Alaska. This great earthquake and ensuing tsunami took 125 lives (tsunami 110, earthquake 15), and caused about $311 million in property loss.
What was the depth of the 1964 Alaska earthquake?
What type of fault is Aleutian Trench?
It is classified as a “marginal trench” in the east as it runs along the margin of the continent.
Where is this earthquake’s epicenter?
The epicenter is the point on the earth’s surface vertically above the hypocenter (or focus), point in the crust where a seismic rupture begins.
What tectonic plate is Alaska?
How deep is the trench by Alaska?
25,000 feet
The Aleutian Trench is about 2200 statute miles long, 50 to 100 miles wide, and has a maximum depth of slightly over 25,000 feet. The north side of the trench slopes 3°–4° and the south side l°–4°.