From Gondwana to Antarctica the Discovery Of, and Early Expeditions To, Antarctica Indigenous Plants and Animals Arc C 4 0 0
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TTHEHE LLASTAST GGREATREAT Department of Science and Technology WWILDERNESSILDERNESS www.dst.gov.za Sou y from th Af From Gondwana to wa rica The discovery of, and a . I Antarctica km t t early expeditions to, 0 ak 0 e 1195-13695-136 mmyaya 0 s Antarctica 4 4 JURASSIC ERA – A single s i 0 335050 BBCC mass of land (a super- a d continent) called Early Greeks hypothesise ic a Gondwana begins t y that a large mass of land to break up to c s must exist to counter the r form modern day t weight of the Arctic. They a o Africa, Antarctica, t call this land Antarctica n t New Zealand, Australia and India. Dinosaurs r – meaning ‘opposite the Arctic’. evolve and oceans teem with fi sh. Bird-like A a . creatures evolve and the climate is warm and wet. v y e 11773773 a l Captain James Cook circumnavigates the 1136-6536-65 mmyaya t Antarctic and is the fi rst to cross the Antarctic M h CRETACEOUS ERA – Antarctica has a sub- / Circle. e l i tropical climate and is covered with ferns and r r conifers. Australia and New Zealand breaks e p 11819819 away from Antarctica as it drifts towards the b A Fabian von Bellingshausen becomes fi rst person South Pole. y d to see the Antarctic continent, after crossing the s n h Antarctic Circle. a 6600 myamya i p PALAEOCENE ERA – As the continents drift r . e Weddell Sea 11820820 further apart from each other, oceans begin to I t b Captain John Davis, on a sealing expedition, surround them. Antarctica drifts further south c m towards the South Pole and moves further away a reports fi rst landing on the continent of e n from New Zealand and Australia. c Antarctica. o e n D / l r y e 11823823 554-384-38 mmyaya b b e British whaler James Weddell sails m EOCENE ERA – Large ice caps form on r e e a v to 74 degrees South, which is the c Antarctica as it settles in its position over the o h N e n d e b furthest most south sailed. The e e t South Pole. The surface becomes jagged with ice w mountains which stretch from coast to coast. Weddell Sea is named after him. 338-268-26 mmyaya South Pole 11840840 OLIGOCENE ERA – Icebergs become British, French and American expeditions permanent and Antarctica becomes Indigenous plants and animals establish status of Antarctica as a continent. a frozen winterland with little vegeta- tion, the coldest temperatures and Antarctica is a hostile environment and most of the plants and creatures in 11899899 strongest winds. South Africa will not survive there. Lichen – a plant composed of fungus and Carsten Borchgrevink leads British expedition algae – is found growing on the rocky outcrops. Invertebrates (animals that landed men at Cape Adare. This was the fi rst 226-76-7 mmyaya without any backbones) such as ticks and mites are also found. Larger land expedition team to spend a winter in Antarctica. MIOCENE ERA – Whole surface of Antarctica animals include penguins and seals. Some breeds of becomes covered with ice and seal-like 11911911 creatures, or pinnipeds, become inhabitants penguin include the Emperor and Adelie penguin. Norwegian Roald Amundsen, along with four of Antarctica. Twelve seal species live on the coastline. The other expedition members, discovers a new surrounding ocean is the home of whales, route that leads to the South Pole. 77-1,8-1,8 mmyaya which feed on krill and Ross Sea PLIOCENE ERA – Fossils of plants and animals sometimes seals and 11923923 from this era indicate many ice sheet movements The beginning of large-scale factory-ship and melting. penguins. whaling in the Ross Sea. 11,8,8 mya-10mya-10 000000 yearsyears agoago 11928928 PLEISTOCENE ERA The Great Sir Hubert Wilkins makes the fi rst Antarctic fl ight Ice Age begins. 30% of the from the Antarctic Peninsular to the Ross Sea. Earth is covered by glaciers and some oceans freeze. 11935935 1100 000000 yyearsears Caroline Mikkelsen from Norway becomes the fi rst aagogo – TTodayoday woman to land on HOLOCENE – The Earth Antarctica. warms and deserts form in some areas. Human civilisations develop. A cold 11961961 ocean current isolates waters around Antarctica, The Antarctic Treaty governing activities in and the continent is permanently frozen. Antarctica is signed. South Africa is one of the original signatories of this Treaty. Note: mya = million years ago. SSOUTHOUTH AAFRICA’SFRICA’S Department of Science and Technology IINVOLVEMENTNVOLVEMENT www.dst.gov.za 11663663 – 11773773 Discovery of the Prince Edward Islands which includes Marion Island. 11800800 – 11932932 Sealing industry thrives and leads to the near extermination of fur seals on Prince Edward Islands. 11939939 – 11948948 After World War II, Marion and Prince Edward islands are annexed in 1948 and offi cially proclaimed South Africa’s territory. SA Agulhas South African base in Antarctica The SA Agulhas is the Department of Environmental Antarctica has hostile living conditions that are not suitable for human Aff airs and Tourism’s research and supply ves- beings, therefore the design of the South African base requires careful sel, which is used by the South African National consideration. In addition to this, researchers are committed to pre- Antarctic Programme (SANAP) for the transpor- serving the fragile environment of the Antarctic and have to be extra tation of personnel and cargo to its three bases careful not to destroy or pollute the surrounding ecosystems. in Antarctica and on Marion and Gough islands. When South African researchers fi rst started staying in the 11958/59958/59 Other countries also charter the Agulhas to assist Antarctic they stayed in bases – SANAE I, II and III – which were The fi rst South African National Antarctic with their Antarctic programmes, e.g. Germany. The built on the ice shelf. However, these bases had a short lifespan Expedition (SANAE) based at an old Norwegian ship also conducts research, weather observations and due to impacting snow. The decision was therefore made to station. buoy deployments in the waters surrounding Antarctica, build SANAE IV about 170km inland on a ‘nunatak’ and Marion and Gough islands. Many weather buoys have (meaning rocky outcrop) at Vesleskarvet. 11962962 been released at 12-hourly intervals on these voyages, and The frame of the base is made of steel and the outer SANAE I, the fi rst South African base is built in meteorological reports are transmitted every three hours layer is rigid, pre-constructed foam and fi breglass panels. Antarctica. when at sea. The Agulhas uses satellite navigation to plot The base is built on stilts, to allow for wind fl ow and to prevent 11963963 its way from South Africa to the three bases. The ship has the accumulation of snow. The roof and bottom panels a large hanger that accommodates helicopters used for air are painted bright orange which makes it easier to see The fi rst postgraduate degree (MSc) is awarded for research conducted as part of South African support in the offl oading of personnel and cargo at all three the base from the air. The living quarters are heated National Antarctic Programme (SANAP). stations. The Agulhas can accommodate 94 non-naval passen- by heat exchangers that are run off a generator. Fresh gers and each cabin has its own shower and toilet facilities. water is obtained by melting snow. 11970/71970/71 The fi rst SANAE base in Antarctica replaced by a second base called SANAE II. Living conditions for 11978978 humans in Antarctica The research vessel, the mv SA Agulhas, makes its maiden Antarctica has no native human population. It is a hostile voyage. environment and living there is extremely diffi cult. Researchers from a number of countries occupy the 11978/79978/79 continent at various bases. Ship and air support provide the SANAE II is replaced transportation by SANAE III. of personnel, 11981981 equipment, cargo and supplies. This Two long-range Aerospatiale Puma helicopters become available on the SA Agulhas. includes vehicles, food, fuel, research 11991/92991/92 equipment, – 11996/97996/97 clothing, etc. The SANAE IV base is erected on hard rock at Vesleskarvet in Antarctica. 22003003 Research support transferred to the Department of Science and Technology and logistics remains with the Department of Environmental Aff airs and Tourism. Department of Science and Technology DDIDID YYOUOU KKNOW?NOW? www.dst.gov.za GGoughough IIslandsland MMarionarion IslandIsland AANTARCTICNTARCTIC RRESEARCH:ESEARCH: Department of Science PPHYSICALHYSICAL SSCIENCECIENCE and Technology www.dst.gov.za Contact details University of KwaZulu-Natal Department of Physics www.ukzn.ac.za AANTARCTICNTARCTIC RRESEARCH:ESEARCH: Department of Science OOCEANOGRAPHICCEANOGRAPHIC SSCIENCECIENCE and Technology www.dst.gov.za to a concise unde utes rsta rib nd nt ing co o , f a th ic e r f w A e a t th of s sou h an e ce r o t and c as limat v e o e f h so t u t g h n i e t r a n g i Af t ric s a e . v n I measuring surfa ies include ce atmospher Study ctivit ic ing rch a th sea uch as turbulent fl uxes of momentum e o re es, s , sensibl c a’s fl ux e ea ic ce n fr rfa ern ocean. A u outh ic h s e s t n r th f a ra e u ea ve ce o ng n So c o n e v f o at e o i o d e s r Contact details n h e f o r c e a nt n s p y m e irls) n c e t d w e m o l a s a l S b l e l r o e a t l i d t n University of Pretoria r c a n n h i a a c e t m e v t o Dept.