Explore the harsh history and tragic expeditions of Antarctica, from early explorations to the Antarctic Treaty. Discover the geological evolution of the continent and its impact on global climate. Dive into the expeditions to the South Pole, scientific achievements, and advancements in Antarctic science with satellite technology.
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Quick takeaways
Antarctica's history spans millions of years from a warm past to an ice-covered present.
International cooperation in scientific research has made Antarctica a valuable laboratory for various disciplines.
Deep dives
The Geological Origins of Antarctica
Antarctica, one of the world's oldest continents, was once part of the ancient landmass Gondwana and has remained over the South Pole for at least 100 million years. Evidence of fossil plants suggests Antarctica had a warm past, despite its current icy conditions.
Formation and Behavior of Ice Sheets
Around 35 million years ago, the ice sheet in Antarctica began forming and gradually expanded to cover almost the entire continent. Ice moves slowly through crystal deformation, with ice streams flowing faster due to lubricating water at the base. Basal geothermal heating melts the ice at the bottom, contributing to faster ice flow.
Exploration and Scientific Discoveries
Early explorers like James Cook and the heroic age of exploration, especially Scott's expeditions, made significant Antarctic discoveries. Scientific research commenced during World War II with research bases established for monitoring German raids. The International Geophysical Year in 1957 furthered scientific collaboration, leading to the Antarctic Treaty System.
Role of Antarctica in Climate Research
Antarctica serves as a unique laboratory for various sciences like atmospheric studies, cosmic ray research, and climate monitoring. The continent's pristine environment and international collaboration enable crucial research on climate change, paleoclimate, and ice sheet behavior. Unexpected discoveries like ancient subglacial lakes highlight Antarctica's ongoing scientific significance.
Melvyn Bragg and his guests discuss the history of Antarctica.The most southerly of the continents is the bleakest and coldest place on Earth. Almost entirely covered in ice, Antarctica spends much of the winter in total darkness.Antarctica was first named in the second century AD by the geographer Marinus of Tyre, who was one of many early geographers to speculate about the existence of a huge southern landmass to balance the known lands of northern Europe. But it wasn't until the nineteenth century that modern man laid eyes on the continent.In the intervening two hundred years the continent has been the scene for some of the most famous - and tragic - events of human exploration. In 1959 an international treaty declared Antarctica a scientific reserve, set aside for peaceful use by any nation willing to subscribe to the terms of the agreement.With: Jane FrancisProfessor of Paleoclimatology at the University of LeedsJulian DowdeswellDirector of the Scott Polar Research Institute and Professor of Physical Geography at the University of CambridgeDavid WaltonEmeritus Professor at the British Antarctic Survey and Visiting Professor at the University of Liverpool.Producer: Thomas Morris.
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