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The deep western boundary undercurrent off the Newfoundland ridge

Authors
Journal
Deep Sea Research Part A Oceanographic Research Papers
0198-0149
Publisher
Elsevier
Publication Date
Volume
38
Issue
3
Identifiers
DOI: 10.1016/0198-0149(91)90074-p
Disciplines
  • Earth Science
  • Geography

Abstract

Abstract Overflow water from the Denmark Straits first encounters water of its own density at the tip of the Grand Banks of Newfoundland at the northeastern end of the Sohm Abyssal Plain. Here the θ-S anomally of the overflow water acts as a dye enabling description of its mixing into the North Atlantic Deep Water. This mixing includes streaks at least 10 km long but less than 1 km in width as well as hemogenous structures as large as 100 km. A strong deep western boundary undercurrent meandering along isobaths to the west at 15–20 cm s −1 was observed at three current meter/thermistor string arrays. These arrays were deployed for 13 months and along with CTD and hydrographic sections form the data set.

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