The University of Southampton
University of Southampton Institutional Repository

Biogeochemical evidence of vigorous mixing in the abyssal ocean

Record type: Article

The metabolic activities of biological communities living at the abyssal seabed create a strong source of nutrients and a sink for oxygen. If the published estimates of vertical mixing based on instantaneous microstructure measurements are correct, near to the abyssal seabed away from rough topographic features there should be enhanced concentrations of nitrate and phosphate and depletion of oxygen. Recent data on the vertical concentration profiles of inorganic nutrients and oxygen over the bottom 1000 m of the water column (World Ocean Circulation Experiment - WOCE) provide no such evidence. It is concluded that the effective vertical mixing rates are much more vigorous than previously indicated and may even be higher than estimates of average basin scale rates based on temperature and salinity distributions. We propose that the enhanced mixing associated with rough topography influences the entire volume of the abyssal ocean on short time scales (e.g., one month - one year).

Full text not available from this repository.

Citation

Lampitt, Richard S., Popova, Ekaterina E. and Tyrrell, Toby (2003) Biogeochemical evidence of vigorous mixing in the abyssal ocean Geophysical Research Letters, 30, (9), pp. 1459-1462. (doi:10.1029/2002GL016638).

More information

Published date: 3 May 2003
Keywords: woce, abyssobenthic zone, biogeochemistry, vertical mixing, metabolism, aquatic communities, geology, biology
Organisations: Ocean and Earth Science, National Oceanography Centre,Southampton

Identifiers

Local EPrints ID: 1958
URI: http://eprints.soton.ac.uk/id/eprint/1958
ISSN: 0094-8276
PURE UUID: 04d154c1-edd9-4e3f-bdf1-706dee648ca0
ORCID for Toby Tyrrell: ORCID iD orcid.org/0000-0002-1002-1716

Catalogue record

Date deposited: 28 Apr 2004
Last modified: 17 Jul 2017 17:16

Export record

Altmetrics


Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×