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Polar Discovery from Woods Hole Oceanographic Institution
Polar Discovery from Woods Hole Oceanographic Institution (8)
Tuesday, 03 June 2008 19:38
Volcanoes and Climate Change in Antarctica
Adam Soule from Woods Hole Oceanographic Institution talks about his volcano research and how Antarctica is sensitive to climate change. As a volcanologist, he will study the lava flows of the past, an important process in an actively evolving planet such as Earth. The products of volcanic eruptions cover more than 2/3's of the Earth's surface and are primary means for transferring heat and mass from the Earth's interior.
Tuesday, 03 June 2008 19:37
Collecting Climate Change Clues in Antarctica
Mark Kurz from Woods Hole Oceanographic Institution discusses how he can find out the ages of rocks in Antarctica to discover when ice sheets and glaciers advanced and retreated on the icy continent. That knowledge, in turn, helps scientists learn more about how and why Earth's climate changed in the past, providing clues to determine how humans are affecting Earth's climate today, and the impacts climate change will have on humans in the future.
Tuesday, 03 June 2008 19:36
Climate Change and the Arctic
Oceanographer Mary-Louise Timmermans discusses the importance of research to determine how much the Arctic's climate is changing.
Tuesday, 03 June 2008 19:26
Understanding Climate Change in the Arctic
Many climate models suggest the Arctic ice cover will melt within 50 years. Researchers at Woods Hole Oceanographic Institution want to measure the changes in the water—particularly the layered structure of the ocean—in order to understand what mechanisms might lead the ice cap to melt from below. The impacts for the ecosystem, the regional and global climate, and for commerce would be enormous. Many climate models suggest the Arctic ice cover will melt within 50 years. Researchers at Woods Hole Oceanographic Institution want to measure the changes in the water—particularly the layered structure of the ocean—in order to understand what mechanisms might lead the ice cap to melt from below. But how is it possible to take continuous measurements over long periods of time in such a hostile environment? Scientists and engineers have found a way.
Tuesday, 03 June 2008 19:25
Polar Discovery: Bundle Up!
As part of the International Polar Year, Polar Discovery brings you the stories of science on ice. The polar regions are experiencing unprecedented environmental changes that are having significant impacts on global climate, ecosystems, and society. Using the latest engineering advancements, scientists are studying the changing climate at the heart of the icy Arctic Ocean, the melting glaciers of Greenland, and the creatures of Antarctica's Southern Ocean.
Tuesday, 03 June 2008 19:24
CTD Deployment on the Gakkel Ridge in the Arctic
Susan Humphris describes where CTDs (Conductivity-Temperature-Depth oceanographic instruments) and the autonomous vehicle Puma have been deployed on the Gakkel Ridge to locate volcanoes and hydrothermal vents.
Tuesday, 03 June 2008 19:12
A polar bear jumping among the floes
On Day 36 of Polar Discovery's third expedition, we were nearing the edge of the ice pack, which means we were also entering bear country. We saw nine in a 24-hour period, beginning Saturday evening. In the United States, we call them "polar bears," but that's a bit misleading because they don't exist at the southern pole.
Tuesday, 03 June 2008 18:50
Graduate Student Studies Past Climate Change
Andrea Burke, a second year graduate student in the MIT/WHOI Joint Program discusses her interest in paleoceanography, past climate change, and her excitement about going to Antarctica to learn more.
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