14,4oo km away. i think. check calculations to be sure.
Based on the average speed of a P-wave (6 km/s), if the observer detected the P-wave 8 minutes after the earthquake, they would be approximately 2880 km away from the epicenter. This calculation assumes the P-wave travelled directly through the Earth without any barriers altering its speed.
The Good Friday Earthquake on March 27, 1964 had its epicenter near Prince Wiliam Sound, Alaska. It lasted about 5 minutes, and caused 131 deaths, but it may not be true.This earthquake was the 4th most powerful earthquake ever recorded, and the most powerful earthquake to have an epicenter in the United States.
A P wave typically travels at around 6-8 km/s through the Earth's interior. Therefore, it would take approximately 1000-1333 seconds (or 16-22 minutes) for a P wave to travel 8000 km from an earthquake epicenter.
The last earthquake listed on the USGS website for (near) Tooele Utah occurred on April 20, 2014. See http://comcat.cr.usgs.gov/earthquakes/eventpage/uu60065467#summaryfor real time reports and updates. On their website, individuals can also report under "Did you feel it".
The duration of shaking in an earthquake varies depending on factors such as magnitude, depth, and distance from the epicenter. Generally, shaking can last from a few seconds to a few minutes. Large earthquakes with higher magnitudes tend to have longer durations of shaking.
Based on the average speed of a P-wave (6 km/s), if the observer detected the P-wave 8 minutes after the earthquake, they would be approximately 2880 km away from the epicenter. This calculation assumes the P-wave travelled directly through the Earth without any barriers altering its speed.
The Good Friday Earthquake on March 27, 1964 had its epicenter near Prince Wiliam Sound, Alaska. It lasted about 5 minutes, and caused 131 deaths, but it may not be true.This earthquake was the 4th most powerful earthquake ever recorded, and the most powerful earthquake to have an epicenter in the United States.
3.5 minutes after the earthquake.
To calculate the distance to the earthquake epicenter using the S-P interval, we can use the fact that the distance in kilometers is approximately equal to the S-P interval in seconds multiplied by 8. For an S-P interval of 6 minutes and 40 seconds (which is 400 seconds), the distance would be roughly 3,200 kilometers from the epicenter.
The time difference between the arrival of P (primary) and S (secondary) waves at a seismic station is directly related to the distance from the earthquake epicenter. In this case, the 8 minutes and 40 seconds delay corresponds to the time it took for the S waves to arrive after the P waves. Using the standard average velocities of P and S waves (about 6 km/s and 3.5 km/s respectively), we can calculate the distance to be approximately 34.6 kilometers from the epicenter.
It would take approximately 22 minutes for the first s-wave to arrive at a seismic station 4000 kilometers away from the epicenter of an earthquake. S-waves travel at an average speed of about 3.5 kilometers per second through the Earth's crust and mantle.
P-waves travel between 5-8 km/s. As such the epicentre could be anywhere between 1200 and 1920 km away.
The tsunami hit Japan about 30 minutes after the earthquake on March 11, 2011. The earthquake's epicenter was off the east coast of Japan, generating a large tsunami that caused widespread devastation along the country's coastline.
The duration of an earthquake can vary widely, from just a few seconds to several minutes, depending on factors such as the magnitude of the quake, the depth of the earthquake's focus, and the distance from the epicenter. Generally, most earthquakes last for around 10-30 seconds.
S-waves will take 31 seconds P-waves will take 8 minutes
A P wave typically travels at around 6-8 km/s through the Earth's interior. Therefore, it would take approximately 1000-1333 seconds (or 16-22 minutes) for a P wave to travel 8000 km from an earthquake epicenter.
The earthquake occurred at 05:46:23 UTC March 11, 2011, or 2:46:23 PM (local time) at epicenter. You can see what time that was in your area in the related links.