The kinematics and geometry can locate the point where the earthquake occurs: Point of interception of the three circles
The earthquakes occur due to a sudden movement of two tectonic plates, this movement produces longitudinal and transverse waves with different speeds, called S and P waves. The speed of the waves is constant, so we can use the uniform kinematic movement relationship
v = d / t
Where v is the speed of the wave, d is the distance and t is the time.
The speed of the two types of waves is known, they depend on the material and type of wave varies between 4 and 7 km / S, the time is measured in the seismometers, for which we can calculate the distance.
For a seismometer, the calculated distance corresponds to a circle, so to locate the epicenter of the earthquake we must have a minimum of three earthquakes, the point of intersection of the circles is the place of occurrence of the event, see the attachment for a diagram of the process.
In conclusion, with kinematics and geometry we can locate where the earthquake occurs: Point of interception of the three circles
Learn more about Earthquakes here
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