South Africa isn’t well-known for main seismic exercise (nor many pure disasters for matter). But the nation has a suprising historical past of signifianct tremors and earthquakes and most of those appear to have occured across the mining belt.
The Council for Geoscience (CGS) confirmed that an earthquake occurred in Gauteng on Sunday morning at round 02:38. The tremor registered an area Magnitude (M) of roughly 4.4 as recorded by the South African Seismograph Community (SANSN).
ALSO READ: Joburg residents are ‘defacing’ potholes – and the town just isn’t pleased about it!
The epicentre was situated within the Boksburg space a number of kilometres outdoors East Rand Proprietary Mine (ERPM), within the East Rand of Johannesburg.
Can we blame earthquakes on mining exercise?
Within the wake of the damaging M4.9 Orkney quake of 2014, Professor Andrzej Kijko of the College of Pretoria’s Pure Hazard Centre stated that 95% of South Africa’s tremors had been brought on by mining, particularly across the areas of Klerksdorp, Welkom and Carletonville.
“Mining in South Africa is resulting in huge stress elements being created. If there’s a pure fault weak point 6km underground, the stresses brought on by mining can simply activate it.
ALSO READ: Council for Geoscience confirms Gauteng earthquake, says epicentre was outdoors a mine
“In South Africa one can simply count on earthquakes of such magnitude to happen each 5 to seven years,” he stated.
How large was this quake?
Up to now there have been no recorded fatalities from Sunday’s tremor, and minimal harm to infrastructure.
Not so for the earthquake of 1969 within the Western Cape, (which was nowhere close to the mining belt.)
At about 10:04pm on 29 September 1969, the Boland farming cities of Tulbagh, Wolseley and Ceres skilled essentially the most damaging earthquake in South African historical past.
ALSO READ: Watch: Earthquake damages a number of buildings in South Africa (Movies)
The epicentre of the earthquake was located in Saron – a area close to Tulbagh. The earthquake measured a large 6.3 on the Richter’s scale, with tremors reported within the broader Cape area.
Many properties had been destroyed and 12 folks died – amongst them kids at an area kids’s dwelling.
ALSO READ: Fracking rears its head once more as SA appears to be like for brand new vitality sources
Hundreds had been left homeless and landslides set off wildfires. The aftershocks from the quakes continued and may very well be felt for a number of months.
The Ceres-Tulbagh earthquake is the strongest earthquake to shake South Africa since measurements started round 1900.
Africa additionally will get the shakes
The most important earthquakes happen the place the oceanic crust is thrust below continents. The most important quake on this planet was a M9.5 earthquake that struck Chile in 1960.
Massive earthquakes are comparatively uncommon in Africa. Solely 4 earthquakes with above M7 have been recorded since 1900 – the most important being a M7.3 occasion in Tanzania in 1910. African nations uncovered to the very best danger are Morocco and Algeria, and nations that straddle the East African Rift.
CLICK HERE TO READ MORE ARTICLES BY NICK PAWSON
