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03 November 2022 | Story Leonie Bolleurs | Photo Supplied
Dr Liezel Rudolph
Dr Liezel Rudolph, a lecturer in the Department of Geography, recently returned from an expedition to Gough Island in the South Atlantic Ocean, where she was involved in research that aims to better understand the landscape evolution of some subantarctic islands and their response to long-term climate change.

A study of subantarctic islands tells us that, in general, the Southern Hemisphere is experiencing a rise in temperature, with an increase in rainfall in some locations, and other areas becoming drier. The annual temperature and rainfall average remain the same in some places, but there is a change in seasonality and synoptic weather events.

This is according to Dr Liezel Rudolph, a lecturer in the Department of Geography at the University of the Free State (UFS). She recently returned from an expedition to Gough Island in the South Atlantic Ocean, supported by the South African National Department of Forestry, Fisheries and the Environment, the National Research Foundation, and the Royal Society for the Protection of Birds.

This teacher of modules on Process Geomorphology and fieldwork techniques at the UFS, says the objective of her work on the island was to do a geomorphological survey of the island and explore the suitability of geochronological dating techniques on the island’s substrate. 

She explains that with geochronological methods one can determine the age of rock material as well as the rate of landscape change on the island. “In other words, dating when the volcano was formed and determining how long it takes for weathering to break down the rock material, and erosional processes to remove soil material.”
 
The research she is involved in, forms part of a SANAP-NRF-funded project, Sub-Antarctic Landscape Climate Interactions, which aims to better understand the landscape evolution of some subantarctic Islands and their response to long-term climate change. 

Studying the past to understand the present

According to her, studying landscape change enables one to better understand climate change over a long period of time. 

She states that the more regions are investigated, the clearer the picture of climate change will become. “The Earth is a large, complex system. By studying climate change in one location, one cannot simply assume that the same type and rate of change is occurring everywhere else. It would be like imaging a 1 000-piece puzzle by building with 10 pieces. The Southern Hemisphere is predominantly ocean, which makes it difficult to pin down land-atmosphere interactions – but the subantarctic islands give us the opportunity to create data points for the Southern Hemisphere, which would otherwise be a very large missing piece of the puzzle,” explains Dr Rudolph.

She says the interaction between ocean, atmosphere, and land remains complex and it is important to study the entire picture in order to fully understand how this is happening. Especially since the climate is changing at a drastic rate.

Dr Rudolph, whose research at the UFS is focused on constraining the last glaciation of subantarctic Marion Island though various proxies and dating techniques, says the subantarctic islands are very sensitive to changes in climate. 

A clearer picture of climate change

She was part of previous expeditions to the island. Although all these expeditions had different goals, according to her, they all aimed to answer the same questions, which are how the island’s landscape has developed throughout history and what the climatic drivers were during its evolution. 

“The landscape responds to changes in temperature and precipitation. Under colder, wetter conditions – when the island’s surface is subject to a freeze-thaw process – a range of peri-glacial landforms will develop. These landforms will still be evident in the landscape years later under a different climate, for example, warmer or drier conditions. We can study these landforms in real-time and establish whether they are actively forming or are relict features that formed under different climatic environments,” remarks Dr Rudolph.

The research, which is taking place in collaboration with the British Antarctic Survey, is co-led by Prof Werner Nel from the University of Fort Hare, and Prof David Hedding from the University of South Africa. 

• Dr Rudolph is grateful to the Government of Tristan da Cunha, which is responsible for managing the conservation of Gough Island, for permitting them to do scientific work on the island. 

News Archive

State of our campuses: UFS extends vacation as from 28 September until 7 October 2016
2016-09-28

In solidarity with the call for free education for the poor and missing middle, a discussion was held with the University Management Committee this morning, in consultation with the student leadership, and after careful assessment of operational matters on all three campuses of the University of the Free State (UFS), we agreed upon the following:
 
1.    All classes, tests, and assignments will be suspended until Friday 7 October 2016. This means that the university will close on Wednesday 28 September 2016 for an extended vacation until 7 October 2016. The academic programme will resume on Monday 10 October 2016.
                     
2.    This will allow the entire university time to demonstrate solidarity, in collaboration with student leadership, academic and support staff, and the broader community in support of free higher education for the poor and missing middle.
                  
3.    The administration of the university will continue on Thursday 29
September 2016, and staff will have access to their offices to plan the additional academic support for students, to consider the re-scheduling of the academic calendar, to engage with the Department of Higher Education and Training in relation to the students’ demands, and to continue with support services during the extended vacation.
 
4.    The university management and student leadership will also, over the next three days, engage in discussions to provide for a platform that is conducive to continued collaboration between students and the university leadership.
 
5.    The suspension of tests, classes, and assignments will also allow time for a social compact and code of ethics for protests to be agreed upon and signed between student leadership and the university management.

 In respect of the Qwaqwa Campus, some protesting students yesterday intimidated others and forcibly removed staff, as well as security personnel. Today, university property was burnt. In view of our commitment to the safety of staff, students, and university property at the campus, it was necessary to evacuate the campus – including residences – with immediate effect. However, residential students are allowed to remain on campus until midday tomorrow (28 September 2016).

The university leadership again wants to emphasise its support for a national policy of free education for the poor and missing middle and stresses its support for peaceful protests on matters that are of concern to our students.
 
We further understand the frustration of many students and their parents/guardians at the closure of the campuses and the impact it has on academic staff, staff in the Support Services, our security personnel, teaching, learning, projects, assignments, lectures, tests, fieldwork, and the academic calendar in general, and commit to do all in our power to ensure the delivery of quality education to all our students under difficult circumstances.


Released by:
Lacea Loader (Director: Communication and Brand Management)
Telephone: +27 51 401 2584 | +27 83 645 2454
Email: news@ufs.ac.za | loaderl@ufs.ac.za
Fax: +27 51 444 6393

 

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