Dataset: Electrochemical Data GoM2017
Deployment: SAV-17-15

Electrochemical data from sediments collected on R/V Savannah cruise SAV-17-15 in the Gulf of Mexico during July and August 2017

Principal Investigator:

Martial Taillefert (Georgia Institute of Technology, GA Tech)

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Source, Composition, and Stability of Soluble Iron Fluxing from Continental Margin Sediments (Soluble Fe Fluxing)

Current State:

Final no updates expected

Deployment Synonyms:

GoM 2017

Data URL:

https://www.bco-dmo.org/dataset-deployment/806466/data

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Description

Methods & Sampling

Dataset acquisition description

Sediments were collected and profiled immediately with voltammetric Hg/Au microelectrodes deployed on a computer-controlled micromanipulator (Beckler et al., 2016).

Sediment cores were obtained by a MC-800 multi-corer and profiled within 30 minutes with voltammetric Hg/Au microelectrodes deployed on a computer-controlled micromanipulator. O₂₍ₐq₎, Mn(II), Fe(II), Org-Fe(III), FeS₍ₐq₎, S₂O₃²⁻, and SH2S were measured by voltammetry using non-invasive mercury/gold (Hg/Au) microelectrodes (Luther et al., 2008) in intact sediment cores. Org-Fe(III) and FeS(aq) cannot be quantified by these methods and are reported in current intensities.

Problem report: Some of the data are missing because of electrostatic interferences that typically occur at time on ships.

Data Processing Description

Dataset Processing Description

Electrochemical data were processed using Voltint (Bristow and Taillefert, 2008), a Matlabᵀᴹ-based software developed for these applications.

BCO-DMO Processing:
- added date column using original year, month, and day columns.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1438648	NSF Division of Ocean Sciences

Instruments

Multi Corer

Supplied Name: MC-800 multi-corer

Supplied Description:

Sediment cores were obtained by a MC-800 multi-corer.

Instrument Type

Generic Name: Multi Corer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/51/

Generic Description:

The Multi Corer is a benthic coring device used to collect multiple, simultaneous, undisturbed sediment/water samples from the seafloor. Multiple coring tubes with varying sampling capacity depending on tube dimensions are mounted in a frame designed to sample the deep ocean seafloor. For more information, see Barnett et al. (1984) in Oceanologica Acta, 7, pp. 399-408.

Voltammetry Analyzers

Supplied Name: Electrochemical analyzer

Supplied Description:

Electrochemical analyzer: DLK-100 and DLK-70 with EX-MAN-1 micromanipulator (Analytical Instrument Systems, Inc.).

Instrument Type

Generic Name: Voltammetry Analyzers

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/LAB35/

Generic Description:

Instruments that obtain information about an analyte by applying a potential and measuring the current produced in the analyte.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
Year	Year	unitless	year
Month	Month	unitless	month
Day	Day	unitless	day
Collection_Type	Collection type	unitless	sample_descrip
Station	Station number	unitless	station
Lon	Longitude	decimal degrees East	lon
Lat	Latitude	decimal degrees North	lat
Sediment_depth	Sediment depth	millimeters (mm)	depth_bsf
O2	Dissolved oxygen	uM (micromolar)	O2
sdO2	Standard deviation of O2	uM (micromolar)	O2
Mn_II	Dissolved manganese(II)	uM (micromolar)	Mn
sdMn_II	Standard deviation of Mn_II	uM (micromolar)	Mn
Fe_II	Dissolved iron(II)	uM (micromolar)	Fe
sdFe_II	Standard deviation of Fe_II	uM (micromolar)	Fe
Org_Fe_III	Dissolved organic-Fe(III) complexes	nA	Fe
sdOrgFe_III	Standard deviation of Org_Fe_III	nA	Fe
FeS_aq	Dissolved molecular clusters of FeS	nA	Fe
sdFeS_aq	Standard deviation of FeS_aq	nA	Fe
SH2S	Dissolved inorganic sulfur	micromolar (uM)	S
sdSH2S	Standard deviation of SH2S	micromolar (uM)	S
S2O3	Dissolved thiosulfate	micromolar (uM)	S
sdS2O3	Standard deviation of S2O3	micromolar (uM)	S
date	Date; format: yyyy-mm-dd	unitless	date

Database

Contribute Data

Dataset: Electrochemical Data GoM2017
Deployment: SAV-17-15

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Electrochemical Data GoM2017Deployment: SAV-17-15

Dataset acquisition description

Dataset Processing Description

Dataset: Electrochemical Data GoM2017
Deployment: SAV-17-15