Question

The epicentre of an earthquake is:
A. deep under the crust of earth
B. in the mantle of earth
C. on the surface of earth
D. in the core of earth

Answer 1

Answer:

C. on the surface of earth

Answer 2

The epicentre of an earthquake is C. on the surface of earth

Explanation:

• Epicentre is point on the earth's crust that is directly above the origination of earthquake (hypocentre).
• The rupture damage is maximum at this point in the earth's surface but subsurface fault rupture are longer than this rupture.
• The time difference between primary wave and secondary wave of the earthquake is used to determine the distance of the epicentre.
• Epicentre measurements from atleast three stations are used to calculate actual epicentre.
• The distance between epicentre measurements in earth's surface is used to determine seismic magnitudes.