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22 July 2021 | Story Ruan Bruwer | Photo Roger Sedres
Can Wayde van Niekerk repeat his amazing feat from the 2016 Olympics – now five years later – at the next Games?

It is a year later, but the Tokyo 2020 Olympics finally started on Friday, 23 July 2021. In team South Africa, a couple of the athletes and management, many of them medal contenders, call themselves Kovsies.

From 1 August, the progress of the country’s golden boy, Wayde van Niekerk, will be closely followed when he tries to hold on to the title as Olympic 400 m champion – he is still the world record holder (set at the 2016 Games). The final of the 400 m is scheduled for 5 August.

One of only five female athletes in the South African team, Gerda Steyn will compete in the marathon on 7 August. This is her first time at the Olympics. 

She is in red-hot form. In April, she broke a 25-year record in Italy when she ran the fastest-ever marathon by a South African woman, finishing in 2:25:28. She is the defending Comrades and Two Oceans champ.

Protea hockey player, Nicole Erasmus, will become a fourth-generation Olympic contender in her family. Her mother, Lynne Walraven (née Tasker) was a Zimbabwean swimmer, her great-uncle, Anthony Tasker, was a member of the South African rowing team, and her great-great-uncle, Frank Rushton, was a South African hurdles athlete. 

From 26 to 28 July, the South African sevens rugby team, with former Shimlas Chris Dry as a team member and Neil Powell as head coach, will aim to improve on their bronze medal achieved in 2016. Powell was also the head coach at the time, and another former Kovsie, Philip Snyman, captained the Blitzboks.

Kate Murray (formerly Roberts), head coach and high-performance manager of Triathlon South Africa, will act as the SA triathlon coach. She is a double Olympic participant, having raced for South Africa at the 2008 and 2012 Olympic Games.

 


News Archive

Scientists discover a water reservoir beneath the Free State
2009-12-09

Dr Holger Sommer

The Mantle Research Group Bloemfontein (MRGB), under the leadership of Dr Holger Sommer, a senior lecturer in the Department of Geology at the University of the Free State (UFS), has discovered an enormous water reservoir 160 km beneath the Free State.

This discovery, according to Dr Sommer, is the first of its kind in South Africa after he had previously made a similar finding in Colorado, USA.

However, this water cannot be used for human consumption. “It is not frozen water; it is not molecular water; it is not fresh water; it is not salty water; it is OH – water which is sitting in the crystal lattice,” he said.

He said the reservoir was comparable in size to Lake Victoria in Tanzania.
The researchers collected eclogites from the Roberts Victor (Rovic) Mine close to the town of Boshof, south-west of the Free State, for their study.

“The Rovic eclogites are rocks which represent former oceanic crust transported into the earth’s interior by complex plate tectonic processes about 2.0 billion years ago,” explained Dr Sommer.

“These rocks were finally carried back to the earth’s surface by volcanic (kimberlite) eruptions around 130 million years ago. Eclogitic rocks are therefore a window into the Earth’s interior.”

The question from the beginning for all MRGB scientists was: Is there water inside these rocks in such depth, and if so, where is it located?

To answer this question, Dr Sommer and his research fellows separated single mineral grains from eclogite samples and prepared about 100 micrometer (0,1 mm) thick rock sections. Afterwards, specific particle accelerator (Synchrotron) measurements were carried out in the city of Karlsruhe in Germany.

“And indeed, the MRGB found water inside the studied rocks from the Roberts Victor Mine,” he said. “The water was located in defect structures in crystal lattices and along boundaries between single mineral grains.”

“The occurrence of water at such depth would give first evidence that all water of the oceans could be stored five to ten times in the earth’s mantle.”
The study was conducted about a year ago.
 

Media Release
Issued by: Mangaliso Radebe
Assistant Director: Media Liaison
Tel: 051 401 2828
Cell: 078 460 3320
E-mail: radebemt.stg@ufs.ac.za
4 December 2009

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