Earthquake similar to the East African rift system

The Ministry of Mines and Energy analysed data of the earthquake that struck Botswana on 4 April and has issued an explanation. The earthquake, which had a magnitude of 6.5 on the Richter scale, was felt in many parts of Southern Africa, including by many residents of the coastal areas of Namibia.
According to the Geological Survey of Namibia, which falls under this ministry, the event was similar to earthquakes of the East African rift system. “The rift system is a result of the breaking-off of the Somali-plate from the Africa-plate and runs from Eretria in the north down to Malawi in the south,” it states.
The extension towards the south is an area of active research. “The quake is a result of broadscale regional tectonic stresses similar to those that produce the East-African rift system,” it states.
The earthquake was measured at two Namibian stations, one in Windhoek and another one in Ariamsvlei, at about 18:42.
Additionally the Tsumeb station, forming part of the USGS global seismic network, recorded the event at around the same time. This was about two minutes after the quake occurred in Botswana. The epicenter was approximately 238km northwest of Gaborone in Botswana, at a depth of 29 kilometers.
Further analysis of the data from Namibia is currently not possible though as the network is undergoing an extensive infrastructural upgrade. “Therefore, only a few stations are currently online,” it states. According to the geological survey the region of southern Africa historically is perceived to have a low level of seismic activity. Earthquakes are not entirely uncommon in Namibia though and occur rarely, sometimes in the northwestern parts of the country.
The recent earthquake with a magnitude of 6.5 was perceived as “strong” and had the potential of damages that could occur. No damages were recorded in Namibia though.

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