2014 Orkney earthquake
Magnitude 5.5 earthquake near Orkney, Klerksdorp, South Africa / From Wikipedia, the free encyclopedia
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The 2014 Orkney earthquake occurred at 12:22:33 SAST on 5 August, with the epicentre near Orkney, a gold mining town in the Klerksdorp district in the North West province of South Africa. The shock was assigned a magnitude of 5.5 on the Richter scale by the Council for Geoscience (CGS) in South Africa,[2][8][9] making it the biggest earthquake in South Africa since the 1969 Tulbagh earthquake,[10] which had a magnitude of 6.3 on the Richter scale.[11] The United States Geological Survey (USGS) estimated a focal depth of 5.0 km (3.1 mi).[1] The CGS reported 84 aftershocks on 5 August and 31 aftershocks on 6 August, with a magnitude of 1.0 to 3.8 on the Richter scale.[5] According to the CGS, the earthquake is the biggest mining-related earthquake in South African history.[3]
UTC time | 2014-08-05 10:22:33 |
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ISC event | 610571677 |
USGS-ANSS | ComCat |
Local date | 5 August 2014 (2014-08-05) |
Local time | 12:22:33 SAST (UTC+02:00)[1] |
Magnitude | 5.5 ML[2] |
Depth | 5.0 km (3.1 mi)[1][3] |
Epicenter | 26.9717°S 26.7094°E / -26.9717; 26.7094[1] |
Areas affected | South Africa, also felt in Botswana, Swaziland, Lesotho and Mozambique |
Max. intensity | MMI VI (Strong) [1] |
Foreshocks | 4.9 MW at 16:16:25 SAST on 15 June 2014[4] |
Aftershocks | 3.8 ML at 16:58:42 SAST on 5 August 2014[5] |
Casualties | 1 dead[6] 34 injured[6][7] |