Results from the high-resolution shipboard acoustic doppler current profilers (SADCP) surveys of four NBC rings conducted during the NBC cruises.


NBC1 ring NBC2 rings NBC4 ring
Maps of the SADCP current vectors obtained for each of the four rings surveyed during three cruises: NBC1: December 1988, NBC2: February 1999, NBC4: June 2000.

velocity across rings 1 and 2 velocity across rings 3 and 4
Velocity sections across each ring from the lower acoustic doppler profiler data (LADCP); superimposed are the main isotherms from the concurrent CTD data.