1966 Toro earthquake

Earthquake in Uganda in 1966 August 2026 1966 Toro earthquake 1966-03-20 01:42:53 849400 iscgem849400 1966 03 20 y 04:42:53 Uganda 6.8 w y 36 km 0.85 N 29.87 E Dip-slip Uganda, Democratic Republic of the Congo, and Tanzania VIII 157 killed (+90 in the May 18 aftershock) The 1966 Toro earthquake, or the 1966 Ruwenzori earthquake, occurred on 20 March at 01:42 UTC (04:42 Uganda local time). The earthquake was located near the border between Uganda and the Democratic Republic of the Congo (DRC), to the south of Lake Albert. Some sources put the epicenter in Uganda while some put it in the Democratic Republic of the Congo.http://unesdoc.unesco.org/images/0000/000077/007799EB.pdf Earthquake reconnaissance mission: Uganda the Toro earthquake of 20 March 1966 Loupekine I.S. July 1966 UNESCO 5 May 201219 The earthquake had a magnitude of w y 6.8http://www.sagaonline.co.za/2009Conference/CD%20Handout/SAGA%202009/PDFs/Abstracts_and_Papers/mavonga_paper1.pdf Seismic hazard in the DRC and Western Rift Valley of Africa Mavonga T. Durrheim R.J. 2009 11th SAGA Biennial Technical Meeting and Exhibition Swaziland, 16–18 September 2009 66 5 May 2012 https://web.archive.org/web/20120318010126/http://www.sagaonline.co.za/2009Conference/CD%20Handout/SAGA%202009/PDFs/Abstracts_and_Papers/mavonga_paper1.pdf 2012-03-18 deadThe Ruwenzori area experienced large earthquakes on 20 March 1966 (Mw 6.8)66 and a maximum perceived intensity of VIII (Severe) on the Mercalli intensity scale.23 Tectonic setting The earthquake occurred in the Mt Rwenzori region, which lies within the Western Rift Valley of the East Africa Rift System, between Lake Edward and Lake Albert. The Mt. Ruwenzori region is the most seismically active region in Uganda and also one of the most seismically active zones in the East Africa Rift System and is bounded by steep active normal faults."The seismicity and tectonics of Uganda" by N. MaashaTwesigomwe E.M. 1997 Seismic hazards in Uganda Journal of African Earth Sciences 24 1/2 183–195 1997JAfES..24..183T 10.1016/S0899-5362(97)00035-3 The calculated focal mechanism for the earthquake was normal faulting in type,Foster A.N. Jackson J.A. 1998 Source parameters of large African earthquakes:implications for crustal rheology and regional kinematics Geophysical Journal International 134 2 425, 438 10.1046/j.1365-246x.1998.00568.x 1998GeoJI.134..422F free although the focal mechanisms of three of the aftershocks were dominantly strike-slip in type.Zana N. Tanaka K. 1981 Focal Mechanism of Major Earthquakes in the Western Rift Valley of Africa Tohoku Geophysical Journal 28 3–4 126 http://ir.library.tohoku.ac.jp/re/bitstream/10097/45289/1/AA0045942681834.pdf 5 May 2012 https://web.archive.org/web/20131211181831/http://ir.library.tohoku.ac.jp/re/bitstream/10097/45289/1/AA0045942681834.pdf 2013-12-11 dead[...] the tension axes are in the direction of east to west and that the pressure axes are about vertical direction. [...] Although the mechanism solutions obtained in this study include a large component of the strike slip faulting Damage Extensive damage was reported in both Uganda and the DRC. The earthquake caused 157 deaths: 104 in Uganda, one in Tanzania and 52 in the DRC. Buildings collapsed in both Uganda and the DRC.26 In Bundibugyo, the Court Hall was damaged.28 Cracks and fissures were observed on the ground. This earthquake could be felt in Uganda, the Democratic Republic of the Congo, Rwanda, Burundi, Tanzania, and Kenya.21 Landslides triggered by the earthquake blocked roads, impeding relief efforts.http://www.ngdc.noaa.gov/nndc/struts/results?eq_0=4362&t=101650&s=13&d=22,26,13,12&nd=display https://archive.today/20121212124221/http://www.ngdc.noaa.gov/nndc/struts/results?eq_0=4362&t=101650&s=13&d=22,26,13,12&nd=display dead December 12, 2012 Significant earthquake National Geophysical Data Center National Geophysical Data Center 5 May 2012 According to press reports, a strong aftershock on 18 May 1966, caused 90 deaths in the DRC. This aftershock caused damage to buildings in both Uganda and the DRC.18 Earthquake The earthquake was associated with 20 km on of surface faulting showing a downthrow of about 1.8 m on to the southeast, consistent with one of the two possible fault planes from the focal mechanism. The earthquake was preceded by numerous foreshocks on 18 and 19 March 1966, and was followed by many aftershocks during the next two months, nine of them with a magnitude of 5.0 or greater.17 The energy release of the main shock was about 2×1017 Nm. The energy release associated with aftershocks after 18 April was also significant. The sum of energy release of the aftershocks up to 45 days after the main shock was also about 2×1017 Nm, i.e. roughly equal to that of the main shock.41 See also List of earthquakes in 1966 List of earthquakes in DR. Congo Tooro Kingdom Toro sub-region References International Handbook of Earthquake & Engineering Seismology Part A, Volume 81A Global seismicity: 1900–1999 E. R. Engdahl A. Vallaseñor 2002 https://earthquake.usgs.gov/data/centennial/centennial.pdf Academic Press First 978-0124406520 681 External links 849400 Toro earthquake, 1966 Category:March 1966 in Africa Category:Earthquakes in Africa Category:Natural disasters in Rwanda Category:Earthquakes in the Democratic Republic of the Congo Category:1966 in Uganda Category:1966 in Tanzania Category:1966 in Rwanda Category:1966 in Burundi Category:1966 in Kenya Category:1966 in the Democratic Republic of the Congo Category:1966 disasters in Africa Category:20th-century disasters in Uganda Category:20th-century disasters in Rwanda Category:20th-century disasters in Tanzania