Question

What is difference between seismic focus and epicentre of the earth according to an earthquake?

Answer 1

seismic focus is the point from where the waves arise. it is the point where fault occurs. epicenter is the point above earth surface from the seismic focus.
seismic focus is located below earth  surface. epicenter is vertically above seismic focus above earth surface.
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Answer 2

Answer:

Difference is given as under

Explanation:

• A seismic focus is a place on the surface of the earth more or less related to the fault surface. Its point is above the surface

• The epicenter is a point on point on the earth's surface usually above the hypocentre point in the crust were the seismic rupture begins. When the energy is released the waves travel through this point  

• Seismographs are used to measure these changes in the surface of the earth.

• The focus line runs parallel to the fault line in accordance with the earthquake.