Question

002 10.0 points 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 pur- pose of this exercise, we assume the P wave's speed to be 8380 m/s while the S waves travel at a slower speed of 4590 m/s. If a seismic station detects a Pwave and then 41.8 s later detects an S wave, how far away is the earthquake center? Answer in units of km.

Answer 1

Denole the distance from the earthquake as, 9 vep)Taave Ta-TI-T s (4590 - 2380 ) = 418 SF 41.8 (4590-8380 = 1424.22] km.