The Deepest, Slowest River—Polar Bottom Water
Lecture no. 32 from the course: Oceanography: Exploring Earth's Final Wilderness
Taught by Professor Harold J. Tobin | 31 min | Categories: The Great Courses Plus Online Science Course
While surface currents move a typical water molecule around an ocean basin in a year or two, down deep water circulates much more slowly, taking hundreds to thousands of years to make a circuit. Trace how dense, cold water masses from the polar regions slowly but inexorably move the great bulk of the ocean.