Found 0 - 10 results of 12 programs matching keyword "sediment cores"
On March 1st, we connected live with scientists aboard the scientific drilling vessel the JOIDES Resolution off the coast of Antarctica. Meet geologists Rob Dunbar, Carlota Escutia, and Christina Riesselman and learn about their historic expedition to Antarctica that is helping reveal the history of Earth's climate and teaching us about our climate future. Geologist Chistina Riesselman explains how studying 3-million-year-old sediment from Antarctica is providing a glimpse of what our planet's climate might look like if atmospheric carbon dioxide continues to rise as projected. To understand how Earths climate system has changed over time, scientists need to find, develop and use natural recorders of temperature and precipitation. One natural thermometer comes in the form of alkenones: trans-fats produced by certain algae. In this video, ride in a special Mattracks truck across the ice sheet with geologist Christina Riesselman as she travels with ANDRILL Staff Scientist Richard Levy from McMurdo Station to the ANDRILL drill site. They investigate the trucks special wheels, observe beautiful panoramas of the Transantarctic Mountains, and hear the drill running at the drill site. Today we wrap up our conversations with the ANDRILL scientists (including project leader Dave Harwood) and hear about what lies ahead for the project. Watch ANDRILL scientists examine a sediment core, find out about new developments, and discover ancient diatoms (single-celled marine organisms). How do ANDRILL scientists drill and retrieve sediment cores from under the ice and sea, and why do they do it? Join us for an overview of the ANDRILL (ANtarctic geological DRILLing) Project, a multinational collaboration among 200-plus scientists, students, and educators from five nations, to recover sediment cores (layered sections of earth) from under the Antarctic ice and seas. Christina, a geologist from Stanford University, investigates climate history by scouring sediment samples for diatoms, microscopic marine creatures that lived long ago in Antarctica's McMurdo Sound. Join us as we talk to scientists from the ANDRILL (ANtarctica DRILLing) project, who are currently on a geological drilling expedition in Antarctica.