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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

UFS congratulates Free State on matric results
2017-01-05

 Description: 002 IBP Matric results Tags: 002 IBP Matric results

With projects like the Internet Broadcast Project and the
Schools Partnership Projects the UFS helps to improve
education at schools in the Free State.
Photo: iStock

The University of the Free State (UFS) congratulates the Free State and its learners on their outstanding performance in the 2016 matric results. The university, who also plays a role in promoting excellence at school level, is proud of the Free State’s achievement as the best-performing province in the country with a 93,2% pass rate, excluding progressed learners.

“On behalf of the university community I would like to congratulate the Free State MEC of Education, Tate Makgoe, who is also a member of the UFS Council, and the Department of Education in the province on this fine achievement. The UFS is proud to be involved in projects that contribute to the success of the province’s learners. These include the Internet Broadcast Project (IBP) and the Schools Partnership Projects (SPP). The projects help to improve the quality of teaching and help learners to overcome severe domestic conditions in rural areas,” says Prof Nicky Morgan, Acting Vice-Chancellor and Rector of the UFS.

Internet Broadcast Project

The UFS IDEAS Lab in the Department of Open and Distance Learning on the UFS South Campus supports learners in 83 schools through the IBP with the help of academic videos. The project is a collaboration between the university and the Department of Education in the province. It includes support for subjects such as Mathematics, Physical Science, Life Science, Economics, Accounting, and Geography.

A purpose-built school appliance, comprising a projector, speakers, and a PC, is set up at each school, where learners receive video lectures from highly-qualified teachers.

During a function held in Bloemfontein on 5 January 2017 to congratulate performing schools in the province, Mr Makgoe made special mention of the IBP and said that part of the success of the province can be attributed to the project. Many of the top performing schools had learners who participated in the project. One of the districts that forms part of the project, the Xhariep District, was announced as the top performing district in the province, and is second in the country.


Schools Partnership Projects

The SPP focuses on teachers in order to have a more sustainable impact, with 69 schools in the Free State and Eastern Cape being part of it.

It makes use of mentors (30) who assist teachers and headmasters with school management, Mathematics, Physical Science, Accounting, and English as language of learning. The project has an annual budget of more than R15 million – all the funds come from sponsors outside the UFS.

Mentors visit schools and share knowledge, extra material, and technology to improve the standard of teaching. The change has been significant. Matric results and Bachelors pass rates have improved dramatically in these schools.

Another aspect is the identification of learners with potential (so-called first-generation students) to go to university. They are assisted through extra classes and in applying for tertiary education and bursaries.

Many of them currently study at the UFS, and also receive mentorship at university.

Dr Peet Venter, SPP Project Manager, said his team is proud to be part of the process of helping the Free State to become the number one province in the country again.

Both the IBP and SPP was started in 2011 and are managed from the university’s South Campus in Bloemfontein.

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