Taking place about two-and-a-half seconds apart, the earthquakes measured 6.9 on the Richter magnitude scale.
On April 25, 2008, the quake of largest magnitude occurred, registering 4.7 on the Richter scale and causing damage in the immediate area around the epicenter, including destroying 200 feet of a wooden flume suppling water from the Highland Ditch, also known as the Highland Ditch flume.
The Balcones Fault zone was most recently active on 01/22/2013 10:16PM UTC-06:00 at the epicenter near Irving, Texas, registering a 3.0 on the Richter magnitude scale.
The second one was the most powerful earthquake ever recorded on Earth, peaking at 9.5 on the Richter scale.
Kushimoto (or specifically, Shiono-Misaki) was the epicenter of the Great Nankai Earthquake, a magnitude 8.0 earthquake that struck the area on December 21, 1946 at 4:19am.
On 2 April 1990, the Pontesford-Linley Fault registered an earthquake with a magnitude of 5.1 on the Richter scale, known as the Bishop's Castle earthquake.
The earthquake's magnitude was measured at 6.9 on the Richter scale, the most powerful ever recorded in the Caucasus Mountains, and caused significant damage to the infrastructure of Oni.
On 2 April 1990, the Pontesford-Linley Fault - registered an earthquake with a magnitude of 5.1 on the Richter scale, known as the Bishop's Castle earthquake.
The first quake occurred on April 21 and had a magnitude of 7.6.
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A magnitude 5.4 earthquake struck Gippsland near Moe at 8.55 pm on 19 June 2012, at a shallow depth of 9.9 km.
In the early evening of 21 December 1988, the observatory's seismometers recorded the destruction of Pan Am Flight 103, which exploded over the nearby town of Lockerbie in an event registering 1.6 on the Richter scale.
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.
On January 26, 2001 a devastating earthquake centred near Bhuj, measuring 6.9 on the richter scale, struck the city.
He was mentored by Professor Frank Press, Professor Clarence Allen, and the famous Professor Charles Francis Richter creator of the Richter magnitude scale.
The, on 1 January 1980, a series of seismic events, in the order of 7 on the Richter magnitude scale caused destruction to homes on Terceira, Graciosa, Faial and São Jorge islands.
The Molalla Union High School building was dedicated in February 1926, and served as the freshmen, sophomore, junior and senior campus until the 5.6 Richter Scotts Mills earthquake on March 25, 1993, rendered the building unsafe for students.
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.