Browse by author
Lookup NU author(s):
Full text for this publication is not currently held within this repository. Alternative links are provided below where available.
Measurements of ocean bottom pressure, particularly on the continental slope, make an efficient means of monitoring large-scale integrals of the ocean circulation. However, direct pressure measurements are limited to monitoring relatively short time scales (compared to the deployment period) because of problems with sensor drift. Measurements are used from the northwest Atlantic continental slope, as part of the Rapid Climate Change (RAPID)–West Atlantic Variability Experiment, to demonstrate that the drift problem can be overcome by using near-boundary measurements of density and velocity to reconstruct bottom pressure differences with accuracy better than 1 cm of water (100 Pa). This accuracy permits the measurement of changes in the zonally integrated flow, below and relative to 1100 m, to an accuracy of 1 Sv (1 Sv ≡ 106 m3 s−1) or better. The technique employs the “stepping method,” a generalization of hydrostatic balance for sloping paths that uses geostrophic current measurements to reconstruct the horizontal component of the pressure gradient.
Author(s): Hughes C, Elipot S, Morales Maqueda MA, Loder J
Publication type: Article
Publication status: Published
Journal: Journal of Atmospheric and Oceanic Technology
Print publication date: 23/04/2013
Online publication date: 23/04/2013
ISSN (print): 0739-0572
ISSN (electronic): 1520-0426
Publisher: American Meteorological Society
Altmetrics provided by Altmetric