All were between 4 and .8 on the Richter magnitude scale.

The strongest tremor has measured 6.0 on the Richter magnitude scale.

It had an estimated magnitude of 8.4 on the Richter magnitude scale.

It is estimated that at ground zero the earthquake would have registered 10.2 on the Richter magnitude scale.

The Richter magnitude scale is a mathematical device to compare the size of earthquakes.

It measured 7.7 on the Richter magnitude scale.

Taking place about two-and-a-half seconds apart, the earthquakes measured 6.9 on the Richter magnitude scale.

During the 1998 games, the mountain suffered a mild earthquake that registered 5.0 on the Richter magnitude scale, but the skiing events continued.

There were at least 155 aftershocks, reaching a magnitude of up to 5.5 on the Richter magnitude scale.

The earthquake measured 4.8 on the Richter magnitude scale, and is rated as the largest earthquake in the region for four decades.

There were multiple explosions, causing some earthquakes, some measuring over 3.0 on the Richter magnitude scale.

The earthquake was considered "moderately strong" with a local magnitude calculated at 4.2 - 4.3 on the Richter magnitude scale.

It was later improved by Charles Richter, the father of the Richter magnitude scale.

Since the mid-20th century, the use of the Richter magnitude scale has largely been supplanted by the moment magnitude scale in many countries.

August 5 - Ambato earthquake in Ecuador, measuring 6.8 on the Richter magnitude scale.

Earthquakes are extremely rare in the Netherlands; this one, measuring 2.3 on the Richter magnitude scale, was a result of drilling for natural gas.

Three earthquakes in 1811 and 1812, estimated at approximately 8 on the Richter magnitude scale, were said to have temporarily reversed the course of the Mississippi.

Harifal territory is in a very strong (vii) earthquake zone, with occurrences of earthquakes at 6-7 on the Richter magnitude scale.

Chinese government official sources state a magnitude of 7.8 on the Richter magnitude scale, though some sources listed it as high as 8.2.

The total number of earthquakes in the area reached over 5,000 and ranged from magnitude .7 to magnitude 4.7 on Richter magnitude scale.

The 2007-2008 Nazko earthquakes were a series of small volcanic earthquakes measuring less than 4.0 on the Richter magnitude scale.

A major earthquake measuring 8.3 on the Richter magnitude scale struck northern Bihar on 15 January 1934.

Listed below are all known earthquakes measured or estimated to have a moment magnitude scale or Richter magnitude scale of 8.5 and above.

These earthquakes were normally no more than magnitude 1.0 on the Richter magnitude scale, but at least one earthquake was as strong as magnitude 3.9.

Aftershocks greater than 5 Richter magnitude scale (or more correctly local magnitude M scale) are listed in the table below: