8.5
9.1 on the Richter Scale.
9.0
The 2011 Tohoku earthquake measured 9.0 on the Richter scale.
The 2011 earthquake was a 5.8 magnitude on the Richter scale.
The March 11, 2011 earthquake was originally measured at magnitude 8.9, but later upgraded to 9.0 by both USGS and Japan scientists.
At first they estimated it as an 8.9 on the Richter scale, but later was revised as a 9.0.
8.9 on the Richter scale.
The Christchurch earthquake that struck New Zealand on February 22, 2011, had a magnitude of 6.3 on the Richter scale.
The Japan earthquake of March 11, 2011 was a 9.0 on the moment magnitude scale, which replaced the Richter scale.
8.9
Because it's Charles Richter's last name... He made the Richter Scale... The Richter Scale can only go up to a 9.9999999(continuous 9)... In Japan in March 2011 the earthquake was a 9.1... It was the 3rd largest earthquake on record
The magnitude of the 2011 earthquake in Christchurch, New Zealand, was 6.3 on the Richter scale.