Question

What is an epicenter

Answer 1

the point on the earth's surface vertically above the focus of an earthquake.
the central point of something.

Answer 2

Answer:

According to seismology, the 'epicenter' is the point on Earth’s surface directly above a 'hypocenter'. It is the 'point' where an 'earthquake' or any underground explosion originates.

Explanation:  

The distance to quake's epicenter can be calculated by a Geologist and this distance is called the 'epicentral distance'. The instrument by which the earthquake is measured is called Seismometer.  

These are of two types- Seismic magnitude scales and Seismic intensity scales.  

According to seismology, earthquake is measured in ' ° (Degrees)' and also it is denoted as Δ (Delta).