On 12 January 2010 a earthquake struck Port-au-Prince.
As soon as Haiti was struck by a earthquake, Babatunde Fashola launched an appeal to raise up to one million U.S. dollars.
In 1990 a 7.3-Thomas C. Hanks
In 1979 the Japanese-American seismologist Hiroo Kanamori, professor of seismology at the California Institute of Technology and Dr. Hanks (then a graduate student at Caltech) suggested the use of Moment magnitude scale to replace the Richter magnitude scale for measuring the relative strength of earthquakes.
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The 1880 earthquake which struck Zagreb (also known as The Great Zagreb Earthquake) was a 8.0 magnitude earthquake which occurred on 9 November 1880.
The 2013 Bushehr earthquake was a magnitude 6.3 Iranian province of Bushehr, near the city of Khvormuj and the towns of Kaki and Shonbeh.
Kanamori and American seismologist Thomas C. Hanks developed the moment magnitude scale which replaced the Richter magnitude scale as a measurement of the relative strength of earthquakes.
The scale is intended to be logarithmic, similar to the moment magnitude scale that is used to describe the comparative magnitude of earthquakes.