(Woods Hole Oceanographic Institution, 1983-06)
Stalcup, Marvel C.; Joyce, Terrence M.; Barbour, R. Lorraine
A joint cruise with Dr. Michael Gregg of the Applied Physics Laboratory
at the University of Washington was conducted from 8-24 January,
1983, aboard the USNS Bartlett to study the effects of wintertime cooling
in a warm core ring. At the beginning of the cruise an XBT survey of
ring 821 (found at 40°40'N, 66°W, east of the New England Seamounts)
showed a rather confused pattern of surface temperature and salinity with
the average depth of the mixed layer about 30m. On January 16-17, a storm
passed near the ring with winds to 45 knots and temperatures below 0°C.
An XBT survey at the end of the cruise showed that vertical mixing and
cooling during the outbreak of cold air resulted in a more coherent pattern
in the surface temperature and salinity of the ring and an increase
in the thickness of the mixed layer to 180 m.
