Interannual variability of bottom temperatures in Drake Passage

Rubython, Katie E., Heywood, Karen J. ORCID: https://orcid.org/0000-0001-9859-0026 and Vassie, John M. (2001) Interannual variability of bottom temperatures in Drake Passage. Journal of Geophysical Research, 106 (C2). pp. 2779-2793. ISSN 0148-0227

Full text not available from this repository. (Request a copy)

Abstract

A continuous 4 year record of in situ bottom temperature measurements at 3690 m within Drake Passage (59°43.7S, 55°29.5W) from November 1992 to November 1996 is presented. The record shows fluctuations of order 0.02°C over monthly periods throughout the 4 years, but the annual mean temperature is the subject under discussion in this work. Between June 1994 and May 1995 the water sampled was of the order of 0.1°C cooler than the water sampled on either side of this time period. This temporal temperature anomaly has only become apparent because of the availability of a continuous data set. Hydrographic data sampled from the same location as part of the World Ocean Circulation Experiment SR1 repeat section provide potential temperature and salinity values that enable the bottom temperature record to be linked to variability in Weddell Sea Deep Water (WSDW). Oxygen isotope measurements demonstrate that the year-long period of cooler WSDW measured in Drake Passage is a signature of Ice Shelf Water in the formation process of deep and bottom waters within the Weddell Sea.

Item Type:	Article
Faculty \ School:	Faculty of Science > School of Environmental Sciences University of East Anglia Research Groups/Centres > Theme - ClimateUEA
UEA Research Groups:	Faculty of Science > Research Groups > Centre for Ocean and Atmospheric Sciences Faculty of Science > Research Groups > Marine and Atmospheric Sciences (former - to 2017) Faculty of Science > Research Groups > Meteorology, Oceanography and Climate Dynamics (former - to 2017) Faculty of Science > Research Groups > Climate, Ocean and Atmospheric Sciences (former - to 2017)
Depositing User:	Rosie Cullington
Date Deposited:	26 May 2011 12:57
Last Modified:	20 Mar 2023 11:31
URI:	https://ueaeprints.uea.ac.uk/id/eprint/31471
DOI:	10.1029/2000JC900114

Actions (login required)

View Item