Question

What is the distance of the epicenter from a certain recording station if the difference in arrival time of P and S waves is 1minute in 10 seconds​

Answer 1

Answer:

if the time separation between the arrival time of the P- and S-waves is 5 minutes:40 seconds, the epicenter must be 4000 km away.

Answer 2

Given:

The difference in arrival time of P and S waves = 1 min 10 seconds

To find:

Distance of the epicenter from a recording station

Solution:

P and S waves are abbreviations for primary and secondary waves during an earthquake respectively.

Primary waves are recorded first in the seismograph followed by secondary waves.

Distance between epicenter and station = x = (t X 100) / 8

The time interval should be taken in seconds

Hence, 1 minute 10 seconds = 60 + 10 seconds

= 70 seconds

Substituting,

x = 70 X 100 / 8

= 875 Km

Hence, the distance of the epicenter from a certain recording station is 875 Km.