Vertical motion in the Gulf Stream near 68°W

Document Type

Article

Date of Original Version

1-1-1994

Abstract

The time derivatives of RAFOS float pressures on isopycnal surfaces are used to determine directly observed vertical motion wRAF. Second, vertical motions are inferred from the heat equation using measured temperature changes and the backing and veering of currents observed by a stack of current meters to produce wCM. Third, vertical motions are calculated from the quasigeostrophic vorticity equation using geostrophic streamfunctions from inverted echo sounder measurements. All three methods give similar results. Typical magnitudes during strong "events' as estimated by all three data sources are on the order of 1-2 mm s-1 in regions near the center of the Gulf Stream. -from Authors

Publication Title, e.g., Journal

Journal of Physical Oceanography

Volume

24

Issue

11

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