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The tremor measured 7.7 on the moment magnitude scale and 7.3 on the Richter scale, [9] and the focal depth was 8.0 km (5.0 mi). The Central Weather Bureau recorded a total of 12,911 aftershocks in the month following the mainshock. [10] The total energy released is estimated to be 2.1 × 10 17 J, [11] approximately the same as the yield of the ...
2016 Old Iliamna earthquake: September 3, 2016: Oklahoma: 5.8 M ww 0: 2016 Oklahoma earthquake: January 23, 2018: Alaska: 7.9 M ww 0: 2018 Gulf of Alaska earthquake: May 4, 2018: Hawaii 6.9 M ww 0 2018 Hawaii earthquake: November 30, 2018: Alaska: 7.1 M ww 0: 2018 Anchorage earthquake: July 4, 2019: California 6.4 M w 1 2019 Ridgecrest ...
Historical earthquakes is a list of significant earthquakes known to have occurred prior to the early 20th century. As the events listed here occurred before routine instrumental recordings — later followed by seismotomography imaging technique, [1] observations using space satellites from outer space, [2] artificial intelligence (AI)-based earthquake warning systems [3] — they rely mainly ...
Seismic moment is measured in newton-meters (N m or N⋅m) in the SI, or dyne-centimeters (dyn⋅cm; 1 dyn⋅cm = 10 −7 N⋅m) in the older CGS system. In the simplest case the moment can be calculated knowing only the amount of slip, the area of the surface ruptured or slipped, and a factor for the resistance or friction encountered.
At that time, the scale had four levels: bishin (微震, faint tremor), jakushin (弱震, weak tremor), kyōshin (強震, strong tremor), and retsushin (烈震, violent tremor). For example, a faint tremor event was described with a brief explanation, such as "Slightly felt by those who have experience of earthquakes" [ 13 ] [ 14 ] [ 15 ] .
The governor of Ishikawa Prefecture, Hiroshi Hase, said that the earthquake had produced at least 2.4 million tons of waste, equivalent to seven-years' worth of waste produced in the prefecture, with 60 percent of it originating in Suzu, Wajima, Noto and Anamizu, which was also equivalent to 60 years' worth of waste produced in these towns.
Tremors were felt in Eritrea and Somalia. 2 2 21 [125] Papua New Guinea, Bougainville offshore 6.6 493.5 I - - - 21 [126] Taiwan, Hualien offshore 6.3 42.8 IV - - - 24 [127] Azerbaijan Soviet Socialist Republic, Caspian Sea offshore 5.2 33.0 IV Some buildings were slightly damaged in southern Dagestan. - - 26 [128] Slovenia, Kočevje: 2.7 10.0 V
Largest in a swarm of 219 tremors affecting the area in one day. [34] Four people injured, [35] 713 houses destroyed and 415 others damaged in El Salvador. [36] At least 55 houses destroyed and 161 others damaged in Guatemala. [37] - 4 16 [38] Japan, Bonin Islands offshore 6.3 405.0 III - - - 17 [39] Iran, Mazandaran, 14 km (8.7 mi) south of ...