The University of Southampton
University of Southampton Institutional Repository

A high resolution study of surface layer hydrographic and biogeochemical properties between Chesapeake Bay and Bermuda

A high resolution study of surface layer hydrographic and biogeochemical properties between Chesapeake Bay and Bermuda
A high resolution study of surface layer hydrographic and biogeochemical properties between Chesapeake Bay and Bermuda
Surface hydrographic and biogeochemical properties were measured contemporaneously at high spatial density during a transit from Chesapeake Bay, across the Middle Atlantic Bight [MAB] and Gulf Stream to the Sargasso Sea near Bermuda from 28 September–2 October 1996. Discrete samples were collected for total organic carbon [TOC], dissolved organic carbon [DOC], total organic nitrogen [TON], dissolved organic nitrogen [DON], total carbon dioxide [TCO2] and alkalinity [TA]. Continuous measurements of temperature, salinity, fluorescence, seawater pCO2 and atmospheric pCO2 were also collected. Estuarine waters of Chesapeake Bay (salinity>20) had high pCO2 (>600 ?atm) and high TOC (>200 ?M), DOC (>190 ?M) and TON (>20 ?M) concentrations reflecting the riverine input of terrestrial organic matter. Low seawater pCO2 concentrations (?350 ?atm), compared to MAB waters (?370–430 ?atm), were observed in the offshore plume of the Chesapeake. High TOC, TON, TCO2 and alkalinity concentrations were observed within a filament of low salinity shelf water abutting the western wall of the Gulf Stream. These filaments are apparently advected off the shelf near Cape Hatteras and subducted beneath the Gulf Stream. We estimate that this process will export shelf organic carbon into the North Atlantic basin at a rate ?3–31×1012 g C year?1, depending on the amount of water advected off the shelf.
inorganic carbon, organic carbon, organic nitrogen, Middle Atlantic Bight, Gulf Stream, Sargasso Sea
0304-4203
1-16
Bates, Nicholas R.
954a83d6-8424-49e9-8acd-e606221c9c57
Hansell, Dennis A.
d4f0a3af-ca20-4791-a794-e52cbd56d654
Bates, Nicholas R.
954a83d6-8424-49e9-8acd-e606221c9c57
Hansell, Dennis A.
d4f0a3af-ca20-4791-a794-e52cbd56d654

Bates, Nicholas R. and Hansell, Dennis A. (1999) A high resolution study of surface layer hydrographic and biogeochemical properties between Chesapeake Bay and Bermuda. Marine Chemistry, 67 (1-2), 1-16. (doi:10.1016/S0304-4203(99)00045-6).

Record type: Article

Abstract

Surface hydrographic and biogeochemical properties were measured contemporaneously at high spatial density during a transit from Chesapeake Bay, across the Middle Atlantic Bight [MAB] and Gulf Stream to the Sargasso Sea near Bermuda from 28 September–2 October 1996. Discrete samples were collected for total organic carbon [TOC], dissolved organic carbon [DOC], total organic nitrogen [TON], dissolved organic nitrogen [DON], total carbon dioxide [TCO2] and alkalinity [TA]. Continuous measurements of temperature, salinity, fluorescence, seawater pCO2 and atmospheric pCO2 were also collected. Estuarine waters of Chesapeake Bay (salinity>20) had high pCO2 (>600 ?atm) and high TOC (>200 ?M), DOC (>190 ?M) and TON (>20 ?M) concentrations reflecting the riverine input of terrestrial organic matter. Low seawater pCO2 concentrations (?350 ?atm), compared to MAB waters (?370–430 ?atm), were observed in the offshore plume of the Chesapeake. High TOC, TON, TCO2 and alkalinity concentrations were observed within a filament of low salinity shelf water abutting the western wall of the Gulf Stream. These filaments are apparently advected off the shelf near Cape Hatteras and subducted beneath the Gulf Stream. We estimate that this process will export shelf organic carbon into the North Atlantic basin at a rate ?3–31×1012 g C year?1, depending on the amount of water advected off the shelf.

Full text not available from this repository.

More information

Published date: October 1999
Keywords: inorganic carbon, organic carbon, organic nitrogen, Middle Atlantic Bight, Gulf Stream, Sargasso Sea
Organisations: Ocean Biochemistry & Ecosystems

Identifiers

Local EPrints ID: 358350
URI: http://eprints.soton.ac.uk/id/eprint/358350
ISSN: 0304-4203
PURE UUID: d102d6d5-5c5b-4bfe-895e-f3bc445e936d

Catalogue record

Date deposited: 03 Oct 2013 16:05
Last modified: 16 Jul 2019 21:21

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.

×