Question

The S-P Interval of seismic waves recorded at a seismometer in eight minutes. Approximately how far away is the earthquakes epicenter from the seismometer? [equation: (S-P interval)= 0.00146 (distance to epicenter)]

A. 5,500
B. 8 km
C. Less than 1 km
D. 550 km

Answer 1

Option (A)

Step-by-step explanation:

The P and S waves are the Primary and the Secondary waves. This S-P interval is recorded at a seismometer which is given as 8 minutes.

Given, S-P interval= 8 minutes

Distance from the epicenter to the seismometer is required to find

According to the equation provided,

⇒(S-P interval) = 0.00146 × (distance to the epicenter)

⇒8 = 0.00146 × (distance to the epicenter)

⇒(distance to the epicenter) = 8 ÷ 0.00146

⇒(distance to the epicenter) = 5479.452 km

Thus, the approximate distance from the epicenter to the seismometer is 5500 km.

Thus, the correct answer is option (A).

Answer 2

The answer is less than 1 km.

Step-by-step explanation:

Finding the Epicenter and Determining the Magnitude of an Earthquake indicates P wave travel time versus separate, and the lower one demonstrates that the 36-second S-P interim relates to a separation of around 555 km. This demonstrates the separation must be under 1 km. Seismic tremor estimate is a quantitative proportion of the measure of the quake at its source. The Richter Magnitude Scale estimates the measure of seismic vitality discharged by a quake. At the point when a quake happens, its extent can be given a solitary numerical incentive on the Richter Magnitude.