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There is now a CONTENT FREEZE for Mercury while we switch to a new platform. It began on Friday, March 10 at 6pm and will end on Wednesday, March 15 at noon. No new content can be created during this time, but all material in the system as of the beginning of the freeze will be migrated to the new platform, including users and groups. Functionally the new site is identical to the old one. webteam@gatech.edu
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"Gravity currents," which are induced by changes in water temperature, are almost completely invisible to the naked eye. Introducing dyes (orange) can illustrate motion. Cold-induced gravity currents typically move downward from a lake's near-shore waters. When the currents reach water of equal temperature, they move inward toward a lake's center (rightward in the image).
Photo by A. Parsons-Field
