Quake only classed as light on scale
SATURDAY’S quake was classed as light on the Richter scale.
The scale was developed 72 years ago by American scientists Charles Richter and Beno Gutenberg.
It calculates the amount of seismic energy released by an earthquake.
Earthquakes can range from microquakes (less than 2 on the scale), which would not be felt, through to meteoric (10 on the scale).
The worst earthquake recorded was in Chile in May 1960 and measured 9.3 on the scale.
While east Kent’s measurement of 4.3 is deemed light, a measurement of 5 is considered moderate and can cause major damage to some buildings.