salt-water underrun

salt-water underrun

[′sȯlt ¦wȯd·ər ′ən·də‚rən]
(oceanography)
A type of density current occurring in a tidal estuary, due to the greater salinity of the bottom water.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.