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28 March 2022 | Story Leonie Bolleurs | Photo Sonia Small (Kaleidoscope Studios)
Prof Francis Petersen and Dr Khotso Mokhele
During the signing ceremony, delegates had the opportunity to visit the MAGIC laboratory, which is housed in the Geology Building on the UFS Bloemfontein Campus. From the left, are Prof Francis Petersen and Dr Khotso Mokhele.

Did you know that one can photograph a plant so clearly from a distance that it is likely to detect the health of its leaves? Or can you contemplate the possibility of taking a photograph of three similar-looking rocks, being able to distinguish them from each other due to spectral properties associated with their internal mineral content?

This and other drone-based geological imaging are made possible by the Merensky group for Aerial Geological Image Classification (MAGIC) at the University of the Free State (UFS).

Recently (24 March 2022), the President of the Hans Merensky Foundation (HMF), Dr Khotso Mokhele, signed a R11 million five-year research grant agreement with the UFS. Merensky research projects are currently limited to three South African universities – Stellenbosch University (for forestry research), the University of Pretoria (for avocados), and now the UFS.

Demonstration and application

Dr Mokhele, who is also the former Chancellor of the UFS, states: “When I walked into the MAGIC Lab, I knew that something special was going to happen here. What we are launching today will become a world-class and world-leading facility.”

According to him, Dr Hans Merensky, whose legacy is facilitated by the foundation, was one of the most influential geologists in South Africa. He discovered, among others, deposits of gold, platinum, diamonds, phosphates, and vermiculite. After several decades of operating in the geological sciences and with his knowledge of soil health, Merensky became a conservationist of note and played a key role in the establishment of the country’s agricultural practices.

“The main objective of the Hans Merensky Foundation is to promote and assist in the development of the resources of South Africa and neighbouring territories – particularly such natural resources as soil, water, flora, and fauna – and to promote the health and welfare of the inhabitants; more specifically, through research, experimentation, and demonstration and through the correlation and application of scientific knowledge.” 

“You have to take the knowledge and translate it into demonstration of what that knowledge can do, and then apply it,” says Dr Mokhele.

The grant is also evidence of Dr Merensky’s generosity. He is well quoted saying: “This country has given to me so much, that I am only too happy to be allowed to help it to develop in some way, and I am grateful to be able to give back to it a fraction of what it has given to me.” 

Next generation of scientists

The Rector and Vice-Chancellor of the UFS, Prof Francis Petersen, said at the signing ceremony that this is an exciting project. “For us as a university, research and the development of the next generation of scientists are critical. This is part of our mandate. This project is one of those catalysts for the development of what the mandate is all about – research output, capacity building, and impact through our students and our research in a broader society.”

He thanked Dr Mokhele for facilitating the project and introducing the UFS to the Hans Merensky Foundation, having the confidence that the university has the capacity to deliver.  

“For Dr Mokhele, it is all about the science. To a certain extent, his driving force was to use science to make a difference in the lives of people,” says Prof Petersen. 

He continues: “The institution is highly committed to this project and will make sure that it receives the maximum support to make it a success.”

The grant has been allocated to MAGIC and funds will be used to support research programmes. “This includes student bursaries, staff salaries, capital expenditure acquisitions such as high-performance computers, as well as the drones that the project makes use of,” states Dr Martin Clark, Lecturer in the Department of Geology.

According to him, the group aims to develop drone-based geological imaging in South Africa, with specific attention to mineral and groundwater exploration endeavours.

Dr Martin Clark
(Dr Martin Clark, principal investigator of MAGIC, says what makes him excited about this project is how the research impacts
society. Photo: Sonia Small

Impacting society 
 
“What makes me excited about this project is how the research impacts society.  This includes developing geological imaging capacity in South African geologists with a 4IR skillset, ensuring that they remain competitive in a global market,” says Dr Clark.

He is also of the opinion that many industries will be able to see for themselves how this technology can improve their businesses. “Drone-based geological imaging can be quicker, cheaper, and safer for collecting much of the initial information that informs more expensive exploration processes, such as drilling. Additionally, it is non-invasive, and has little to no impact on the environment during data collection. Drones can also, in terms of safety, collect data from unstable rock walls – historically, geologists would have to take those measurements themselves, with rock falls resulting in a significant number of deaths every year.”

Recent research

Dr Clark says drone-based imaging has supported research initiatives in the Vredefort Dome. “Using drone-collected high-resolution images of meteorite impact melt rocks, along with field observations of how much and where foreign rock components were contained within (clasts), we could make a case for turbulent flow in the migration of impact melt material within the deep crust.”
 
He adds that three papers are currently underway, each predicated on drone imagery that enables new insights into geological processes or the ability to digitally translate geological information inside and outside the classroom.

The growing research group, with Dr Clark as the principal investigator, consists of one PhD student, two master’s students, and two honours students, with several postdoctoral research fellows to follow soon. 

The difference

Although several universities in the country have started using drones, the UFS has significant support to grow drone applications. With assets such as the high-performance computing cluster, very large drone-borne datasets can be resolved in record time.  

“The UFS also has a wealth of world-class researchers focused on topics such as farming and environmental management, who will be able to benefit from the drone infrastructure being established on campus. We are aiming to be the go-to geological drone imaging group in South Africa,” he says. 




About mineral and groundwater exploration


Dr Martin Clark explains that drones can carry several types of cameras, from regular photographic cameras that capture photos as we know it, to thermal cameras showing differences in hot and cold bodies, to spectral cameras capturing beyond what our eyes can see into other portions of the electromagnetic spectrum.  The MAGIC group mainly uses regular and spectral cameras for their applications. 

He says with mineral exploration, a high-resolution understanding of the geometry of rock bodies enables us to better identify where more costly mineral exploration techniques (e.g., drilling) should go.  This process allows for a better understanding of how geological areas have developed from a structural perspective – in essence, from where and how rocks have been displaced and deformed, and by association, the mineral deposits contained within.

“In terms of groundwater exploration, regular cameras are used to understand where rocks are fractured, where specific groundwater-influencing lithological bodies are located, and how they are orientated.” 

Dr Clark continues: “With spectral cameras, we can perceive the level of access that surface plants have to water resources. It is also possible to spot the distribution of plant types associated with, or strongly dependent on, available near-surface groundwater resources.  By using spectral data, which was historically collected from satellites, we can understand how areas of land have been affected by growing, shrinking, or shifting underground bodies of water.”




News Archive

New South African literature festival offers something for everyone
2016-03-23

The University of the Free State (UFS) in partnership with the Vrystaat Arts Festival is proud to present the first literature festival in central South Africa from 11-16 July in Bloemfontein. Afrikaans books and writers will feature prominently, in addition to other indigenous languages such as Sotho and Zulu. Several authors will be celebrating literature in English.

Vice-Chancellor and Rector of the University of the Free State Professor Jonathan Jansen says:  ‘The aim of the festival, part of the bigger Vrystaat Arts Festival, is to strengthen a culture of reading, not just in the Free State but nationally. The festival will market books as well as embrace new developments in the field of writing. I am incredibly excited about this inaugural event, which the university will support in the long-term.’

The theme of this year’s literature festival is ‘Our Africa’ and promises to provide all booklovers and readers tantalizing food for thought. Some of the authors attending the festival include, amongst others, the Hertzog-prize winner Adam Small, celebrating his 80th birthday as well as the release of his latest drama. Another legendary writer, dramaturge and actor, John Kani, will be speaking at the festival about his most recent theatre productions. The ever popular Marita van der Vyver will be visiting the festival from France, and the highly acclaimed writer Zakes Mda, will be flying in from the United States to deliver the inaugural Sol Plaatje Lecture. Mda, also a visual artist, will have some of his works on display.

Other international guests include Chika Unigwe, originally from Nigeria, who rose to fame in Belgium, and was described by South African writer Zukiswa Wanner as one of the five most renowned writers from Africa. Also attending will be Iranian writer Kader Abdolah, whose novels have been translated into more than 21 languages. Abdolah, a political refugee who escaped from Iran to the Netherlands in the 1980s, went on to establish himself as one of the most prominent Dutch novelists. Wilfried N’Sondé, originally from the Congo, who now lives in France, will also be a festival guest.
 
Theo Kemp, Coordinator of the Literature Festival says: ‘It is critical for us that robust debates on current affairs takes place as part of the festival. Festival participants will be able to engage with a range of authors on topical and sometimes sensitive issues. We welcome this debate – it is rare to have a platform where we can argue passionately yet respectfully about the future of our country in an international context.’

Critical topics covered include themes such as the state of Africa’s economies (with analyst and writer Victor Kgomoeswana); the relevance of the Anglo-Boer War in contemporary society (with Albert Blake and Johan Kruger); philosopher Achille Mbembe talking with Kevin Bloom and Richard Poplak about the changing face of Africa; and the political analysts Susan Booysen and John Matisonn examining the South African landscape in a post-municipal election environment.

Theuns Eloff, previous Rector of the University of Potchefstroom, whose new book What now, South Africa is launched this year, will partake in discussions around current affairs. So to Melanie Verwoerd and Sonwabiso Ngcowa aim to explore the phenomenon of the so-called ‘born frees’ in their book 21 at 21: The Coming of Age of A Nation.

Climate change and its impact on the Free State’s environment is another critical topic covered by Bob and Mary Schole with their book launch of Climate Change: Briefings from Southern Africa.

Festival goers can also look forward to a poetry café, where music and poetry will be mixed; informal visits with writers around food and story telling; as well as word and music productions where popular travel writers such as Johan Bakkes, Dana Snyman, Erns Grundling and Pienkes du Plessis will be present.

Writers will also be involved in a range of panel discussions – including on the ethics of writing biographies (Lindie Koorts and Mark Gevisser); alternative narratives of South Africa in the eighties (Ivan Vladislavic and Johann Roussouw); and discussions with writers such as Hans du Plessis, Bernard Odendaal, Hanlie Retief, Rudie van Rensburg and Irma Joubert.

Workshops will also feature in the programme with writers such as Francois Smith and Henning Pieterse, associated with the Department of Afrikaans and Dutch at the UFS, offering short courses on creative writing; while Johann Roussouw from the Department of Philosophy at the UFS will present a series of talks on the books of Karel Schoeman.

The final festival programme will be launched on 28 April 2016.

The Vrystaat Literature Festival was initiated by the University of the Free State in partnership with the Vrystaat Arts Festival. Project sponsors include Media24, ATKV, Vlaamse Letterenfonds, Institut Francais, Nederlandse Letterfonds, Van Rensburg Pataloe and the Flemish Embassy.
 

For further enquiries contact:

Theo Kemp
theo.kemp@volksblad.com
+27(0)83 462 9613
www.vrystaatartsfestival.co.za

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