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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

Parking at UFS for visitors
2007-11-10

UFS creates more parking for visitors

In its effort to make it easier for visitors to park on the Main Campus of the University of the Free State (UFS) in Bloemfontein, two paid parking areas will be put into operation as from Monday, 5 November 2007.

These parking areas are part of a comprehensive new parking strategy of the UFS, which is being implemented since September 2007. As part of the strategy, areas of the central campus have been reserved for staff and visitors and hundreds of new parking areas were developed for students at the entrance in Wynand Mouton Avenue (at the Faculty of Health Sciences) and the entrance in DF Malherbe Avenue (at the Agriculture Building).

“The paid parking areas for visitors, which are as close as possible to the busy and largely closed-off central campus, were created as an additional service to visitors,” said Ms Edma Pelzer, Director of Physical Resources at the UFS.

According to Ms Pelzer, persons who attend meetings, seminars or short courses, visiting colleagues, consultants, service providers, family of students and staff members, clients, etc. can make use of this parking.

“We have found that it is often difficult for visitors to obtain parking in or close to the central campus. Now they will have a choice to either park in the visitors parking areas at a minimal fee or to park in any of the open unreserved parking areas on campus,” said Ms Pelzer.

The areas, which will be closed off behind booms on weekdays from 06:00 until 18:00, are situated to the eastern side of the “Red Square”, east of the CR Swart and Idalia Loots Buildings and west of Campus Avenue North between the Psychology and the Flippie Groenewoud Buildings.


Media Release
Issued by: Lacea Loader
Assistant Director: Media Liaison
Tel: 051 401 2584
Cell: 083 645 2454
E-mail: loaderl.stg@ufs.ac.za  
2 November 2007

Parking for visitors: Important notice:

As from Monday 5 November 2007 two paid parking areas on the UFS Campus will be put into operation. The areas will be closed off behind booms on weekdays from 06:00 until 18:00. These will be manned and R3 per hour will be charged.
 

The following areas are involved:

  • P3: The area to the east of the “Red Square”, east of the CR Swart and Idalia Loots Buildings.

     
  • P6: The area to the east of Campus Avenue North between the Psychology and Flippie Groenewoud Buildings.

    The friendly co-operation of users of motor vehicles on campus is requested to allow this implementation to proceed as smoothly as possible.

Parking for visitors: More information

The strategy to create paid parking areas for visitors

The decision to reserve areas in the central campus areas for the convenience of visitors was taken as part of the comprehensive new parking strategy of the UFS approved by the Executive Management in May 2007 and which is being implemented since September.

All visitors need not park in these areas. Visitors may park for free on any open (unreserved) parking bay on campus. These paid parking areas for visitors, as close as possible to the busy and largely closed-off central campus, have been created as an additional service to visitors.

The strategy to close off parts of the central campus for staff members and visitors was implemented after sufficient alternative parking areas had been developed for students.

What is meant by the term “visitors”?

It includes all persons who are not students of staff members of the UFS and who visit the campus for one reason or another. Persons who attend meetings, seminars or short courses, visiting colleagues, consultants, service providers, family of students and staff members, et cetera are included.

As at present, it will, of course, be possible to make special arrangements with Protection Services to make it possible for VIP visitors to park as near as possible to their destinations.

No student or staff member will be actively prevented from parking in the area. They will, however, be discouraged by the fact that R3 per hour will be charged without exception.

The visitors’ parking area and access to it

  • P3: The area to the east of the “Red Square”, east of the CR Swart and Idalia Loots Buildings. The area is within easy walking distance for visitors to, among others, the following buildings: George du Toit Administration Building, Theology Building, Idalia Loots Building, CR Swart Building, Johannes Brill Building, Van der Merwe Scholz Hall.

    The area is conveniently accessible from the following entrances: Nelson Mandela Drive, Groenewoud Street and Wynand Mouton Drive.

     
  • P6: The area to the west of Campus Avenue North, between the Psychology and Flippie Groenewoud Buildings. The area is within easy walking distance for visitors to all the academic buildings in the central campus, such as the Chemistry Building, Stef Coetzee Building, the Geography Building, et cetera and located directly opposite the general information point on the Thakaneng Bridge.

    The area is conveniently accessible from the following entrances: Fürstenburg Road and DF Malherbe Avenue (at the Agriculture Building).

     

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