In fact, the Richter scale was replaced in the 1970s by other ... with German-American seismologist Beno Gutenberg — to measure the size of earthquakes occurring in southern California.

Another scale is based on the physical size of the earthquake fault and the amount of slip that occurred. Then there are also measures of earthquake shaking intensity. The intensity from one ...

Earthquake Magnitude Scale Magnitude Earthquake Effects Estimated Number Each Year 2.5 or less Usually not felt, but can be recorded by seismograph. Millions 2.5 to 5.4 Often felt, but only causes ...

The largest earthquake ever recorded was in Chile in 1960, it measured 9.5 on the Richter scale.