What made the 1964 Alaska earthquake special at the time it happened? Studies of ground motion have led to a peak ground acceleration estimate of 0.14–0.18 g. The Alaska earthquake was a subduction zone (megathrust)
What made the 1964 Alaska earthquake special at the time it happened?
Studies of ground motion have led to a peak ground acceleration estimate of 0.14–0.18 g. The Alaska earthquake was a subduction zone (megathrust) earthquake, caused by an oceanic plate sinking under a continental plate. The fault responsible was the Aleutian Megathrust, a reverse fault caused by a compressional force.
How many deaths were there in the Great Alaska Earthquake?
The number of deaths from the earthquake totalled 131; 115 in Alaska and 16 in Oregon and California. The death toll was extrememly small for a quake of this magnitude due to low population density, the time of day and the fact that it was a holiday, and the type of material used to construct many buildings (wood).
What destroyed Anchorage in 1964?
1964 Alaska earthquake
The 1964 Alaska earthquake, the strongest earthquake ever recorded in North America, struck Alaska’s Prince William Sound, about 74 miles southeast of Anchorage. Most of Alaska’s mainland felt the magnitude 9.2 earthquake, which wobbled Seattle’s Space Needle some 1,200 miles away.
What was remarkable about the 1964 Alaska earthquake?
It rattled for about four minutes, destroying a major part of downtown Anchorage and leading to damaging landslides in Anchorage, according to the U.S. Geological Survey. The quake was so powerful it caused the Space Needle to sway, so strong it caused rivers and lakes to slosh as far away as Louisiana and Texas.
What is the largest tsunami ever recorded?
Lituya Bay, Alaska, July 9, 1958 Its over 1,700-foot wave was the largest ever recorded for a tsunami. It inundated five square miles of land and cleared hundreds of thousands of trees. Remarkably, only two fatalities occurred.
What is the largest earthquake ever recorded in Alaska?
Largest earthquake in 50 years: What we know so far | Alaska Earthquake Center. At 10:15pm Alaska time on July 28, a magnitude 8.2 earthquake struck offshore of the Alaska Peninsula, the largest U.S. earthquake in 50 years. The Chignik Earthquake depth was approximately 28.5 miles, an intermediate-depth earthquake.