This graphic is a summit ice core timeline depicting the phenomena that as we drill deeper ice cores, the ice gets older. The graphic compares this timeframe with major milestones in history. It is a concept developed by Zoe Courville and Dr. Mary Albert at Dartmouth University, in partnership with CRREL (Cold Regions Research and Engineering Laboratory).
Nature creates its own density column in marine systems, which is extremely important for the triggering of the spring bloom of phytoplankton. Phytoplankton are an important food source for all organisms- from microscopic zooplankton to large marine mammals such as walrus and whales. The different salinities (and therefore, different densities) of water help to stabilize the water column (by limiting
The website, Ice Stories, features short interviews and other interesting content live from the polar regions. This weblink has a short video interview of PolarTREC teacher, Craig Beals, while taking part in a PolarTREC expedition with Barry Lefer at Summit, Greenland.
PolarTREC Teacher, Craig Beals, talks about his experiences at Summit, Greenland in this online version of an article published by the Billings Gazette on July 21, 2008.