In fact, the Richter scale was replaced in the 1970s by other ... scale used relatively high-frequency data from nearby seismograph stations, according to the USGS, but as more stations were ...

The strength of an earthquake is measured on the Richter scale and recorded on a seismograph. Magnitudes are based on a logarithmic scale, meaning for each whole-number increase on the scale ...

A massive earthquake of magnitude five hit the Morigaon district of Assam in the early hours of Thursday; there has been no news of destruction or injuries.