distance apart = d in METERS
Tp = d / 9970
Ts = d/5530
so
d/5530 - d/9970 = 92.9
d( 1/5530 - 1/9970) = 92.9
divide resulting d by 1000 to get km
Earthquakes produce two kinds of seismic
waves: he longitudinal primary waves (called
P waves) and the transverse secondary waves
(called S waves). Both S waves and P waves
travel through Earth’s crust and mantle, but
at different speeds; the P waves are always
faster than the S waves, but their exact speeds
depend on depth and location. For the purpose of this exercise, we assume the P wave’s
speed to be 9970 m/s while the S waves travel
at a slower speed of 5530 m/s.
If a seismic station detects a P wave and
then 92.9 s later detects an S wave, how far
away is the earthquake center?
Answer in units of km.
1 answer
1 answer