The moment magnitude scale (MMS; denoted explicitly with Mw or Mw, and generally implied with use of a single M for magnitude) is a measure of an earthquake's magnitude ("size" or strength) based on ...

Earthquake strength is registered on the moment magnitude scale, which measures how much energy was released when the rocks along a fault moved during the quake. By Henry Fountain Earthquake strength ...

AUSTIN (KXAN) — Since the 1890s, the invention of the seismograph has given scientists an understanding of the intensity and magnitude of earthquakes. In 1935, Charles Richter developed the Richter ...

(Corrects paragraph 5 of Feb 27 story to make clear that a magnitude 7.0 quake releases 1,000 times more energy than a magnitude 5.0, not 900) Feb 27 (Reuters) - A massive magnitude-8.8 earthquake ...