There are two types of seismic waves associated with every earthquake, called P and S waves....

There are two types of seismic waves associated with every earthquake, called P and S waves. They travel in every direction away from the source of an Earthquake called the epicenter. Because they each travel with different speeds, seismologists can determine the distance from a seismic station to an epicenter. An earthquake occurred in an area when a P wave travels at 5 km/s and the S wave travels at 3 km/s. A seismic station measures an SP lag time of 16.9 seconds (meaning the P wave was detected 16.9 seconds before the S wave). How far is the epicenter from the seismic station?

Solutions

Expert Solution

step;1

Given that

velocity wave P=5 km/s

velocity of wave S=>3 km/s=0.83 m/s

time difference =16.9 second

step;2

now we find the distance

distance S=0.83*16.9 +1/2*9.8*16.9^2=14.03+1399.5=1413.53 meters=1.41353 km

genius_generous answered 1 year ago

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