http://lod.bco-dmo.org/id/dataset/806105
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2020-03-17
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Sediment pore water and solid phase geochemical analyses from samples collected on R/V Savannah cruise SAV-17-15 in the Gulf of Mexico during July and August 2017
2020-03-17
publication
2020-03-17
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2020-03-19
publication
https://doi.org/10.26008/1912/bco-dmo.806105.1
Martial Taillefert
Georgia Institute of Technology
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Taillefert, M. (2020) Sediment pore water and solid phase geochemical analyses from samples collected on R/V Savannah cruise SAV-17-15 in the Gulf of Mexico during July and August 2017. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2020-03-17 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.806105.1 [access date]
Sediment pore water and solid phase geochemical analyses from samples collected on R/V Savannah cruise SAV-17-15 in the Gulf of Mexico during July and August 2017 Dataset Description: Methods and Sampling: <p>Sediments were collected and profiled immediately with voltammetric Hg/Au microelectrodes deployed on a computer-controlled micromanipulator (Beckler et al., 2016). Sediment pore waters were then extracted from the same core and either preserved until analysis or analyzed immediately onboard ship. Sampling and analyses were conducted immediately after sediment collection to minimize artifacts from exposure to the atmosphere.</p>
<p>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. After profiling, sediments were immediately sliced under N₂ atmosphere and pore waters extracted by centrifugation at 3000 rpm under N₂ atmosphere. Finally, pore waters were immediately filtered (0.2 µM PSE Puradisc syringe filters, Whatman) under N₂ atmosphere and either preserved at -20C until analysis (Br⁻, NO₂⁻, NO₃⁻, SO₄²⁻), preserved at 4C after acidification (NH₄⁺), dispensed directly into reagents for analysis (Fe(II), Fe<sub>d</sub>, Mn<sub>d</sub>, SPO₄³⁻), or analyzed immediately (DIC, TA). Br⁻, NO₂⁻, NO₃⁻, and SO₄²⁻ were measured by non-suppressed HPLC with UV detection (Beckler et al., 2014). NH₄⁺ was measured spectrophopotmetrically by the indophenol blue method (Strickland and Parsons, 1972), Fe<sub>d</sub> and Fe(II) were measured by the ferrozine method after addition or not of hydroxylamine (Stookey, 1970). Mn<sub>d</sub> was measured by the porphyrin kinetic spectrophotometric method (Madison et al., 2011) modified to account for dissolved Fe(II) interferences (Owings et al., 2020). SPO₄³⁻ was measured spectrophotometrically using the molybdate-blue method after natural color correction to avoid interferences from dissolved silica and sulfides (Murphy and Riley, 1962). DIC was measured by flow injection analysis with conductivity detection after spiking samples with 10 mM ZnCl₂ to prevent dissolved sulfide interferences (Hall and Aller, 1992). Finally, TA was measured by acid titration in an open-cell with continuous pH measurements (Dickson et al., 2007; Rassmann et al., 2016). All errors reported for the electrochemical measurements represent the standard deviation of at least triplicate measurements. Errors of all other parameters represent the analytical error propagated from calibration curves, dilution, and instrumental drift.</p>
<p><strong>Problem report:</strong> Some of the data are missing because pore water volumes were too low to make all the measurements.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1438648 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1438648
completed
Martial Taillefert
Georgia Institute of Technology
404-894-6043
School of Earth and Atmospheric Sciences 311 Ferst Dr. NE
Atlanta
GA
30332
USA
mtaillef@eas.gatech.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Year
Month
Day
Collection_Type
Station
Lon
Lat
sample_ID
Sediment_depth
Fe_II
sdFe_II
Fed
sdFed
Fe_III_d
sdFe_III_d
DIC
sdDIC
PO4
sdPO4
Mnd
sdMnd
NH4
sdNH4
NO2
sdNO2
Br
sdBr
NO3
sdNO3
Cl
sdCl
SO42
sdSO42
TA
sdTA
date
Flow Injection Analysis
HPLC
MC-800 multi-corer
spectrophopotmeter
theme
None, User defined
year
month of year
day of month
sample description
station
longitude
latitude
sample identification
depth below seafloor
Iron
dissolved inorganic Carbon
reactive phosphorus (PO4)
Manganese
Ammonium
Nitrite
bromides
Nitrate
chlorine
sulfate
total alkalinity (TA)
date
featureType
BCO-DMO Standard Parameters
Flow Injection Analyzer
High-Performance Liquid Chromatograph
Multi Corer
Spectrophotometer
instrument
BCO-DMO Standard Instruments
SAV-17-15
service
Deployment Activity
Gulf of Mexico
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Source, Composition, and Stability of Soluble Iron Fluxing from Continental Margin Sediments
https://osprey.bco-dmo.org/project/743719
Source, Composition, and Stability of Soluble Iron Fluxing from Continental Margin Sediments
<p><em>NSF Award Abstract:</em><br />
Iron is a limiting nutrient in the world's oceans and plays a key role in regulating the growth of phytoplankton. The main sources of iron to the open ocean are the atmosphere, through wind-blown terrestrial dust, and the seafloor, through input from continental shelf sediments. While atmospheric inputs have been well-studied, the oceanic input of iron from sediments has only sparsely been measured and, as a result, the relative importance of the sediment-derived iron to the iron pool and, ultimately, primary productivity in the oceans is poorly understood. In this study, researchers will examine the chemical properties of sediment-derived iron in the oceans to assess its contribution to the iron used by phytoplankton. Results from this study will further our understanding of iron inputs to the ocean and their importance to ocean primary productivity. The project will contribute to the training of graduate students, as well as provide educational opportunities such as a day at sea for undergraduate students in engineering and physical science.</p>
<p>The atmosphere and continental margin sediments are the main source of the limiting nutrient iron (Fe) to the open ocean. Yet, the chemical form of iron from sediments has not been well examined and only quantified as reduced iron or the dissolved iron passing through 0.45 µm filters. The kinetics of iron oxygenation suggests it should precipitate rapidly in the overlying waters, challenging the view that sediments are important sources of iron for primary production. To establish whether the flux of iron from sediments has important implications for primary productivity, possibly rivaling atmospheric inputs, it is necessary to demonstrate that ferric iron originating in sediments is under the form of stable iron species with potential for a high residence time in the water column. The overall objective of this project is to test the hypotheses that iron fluxing across the sediment-water interface in continental margin sediments is dissolved under the form of organic-Fe(III) complexes and that the magnitude of the iron flux is influenced by the redox conditions in the overlying waters, the composition of the complexes, and the biogeochemical processes in the underlying sediments. To test these hypotheses, the flux and speciation of dissolved Fe(III) will be quantified in the sediments of the Carolina depocenter and the Gulf of Mexico, and the biogeochemical processes regulating the production and the flux of iron as a function of the redox regime of the environment will be determined using in situ measurements and state-of-the-art voltammetric and chromatographic techniques.</p>
Soluble Fe Fluxing
largerWorkCitation
project
eng; USA
oceans
Gulf of Mexico
-91.3362
-88.8484
28.2007
28.9476
2017-07-26
2017-08-06
Northern South Atlantic Bight (Cape Lookout, NC) and Northern Gulf of Mexico
0
BCO-DMO catalogue of parameters from Sediment pore water and solid phase geochemical analyses from samples collected on R/V Savannah cruise SAV-17-15 in the Gulf of Mexico during July and August 2017
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/806391.rdf
Name: Year
Units: unitless
Description: <p>Year</p>
http://lod.bco-dmo.org/id/dataset-parameter/806392.rdf
Name: Month
Units: unitless
Description: <p>Month</p>
http://lod.bco-dmo.org/id/dataset-parameter/806393.rdf
Name: Day
Units: unitless
Description: <p>Day</p>
http://lod.bco-dmo.org/id/dataset-parameter/806394.rdf
Name: Collection_Type
Units: unitless
Description: <p>Type of collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/806395.rdf
Name: Station
Units: unitless
Description: <p>Station number</p>
http://lod.bco-dmo.org/id/dataset-parameter/806396.rdf
Name: Lon
Units: decimal degrees East
Description: <p>Longitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/806397.rdf
Name: Lat
Units: decimal degrees North
Description: <p>Latitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/806398.rdf
Name: sample_ID
Units: unitless
Description: <p>Sample ID number</p>
http://lod.bco-dmo.org/id/dataset-parameter/806399.rdf
Name: Sediment_depth
Units: centimeters (cm)
Description: <p>Sediment depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/806400.rdf
Name: Fe_II
Units: micromolar (uM)
Description: <p>Dissolved ferrous iron</p>
http://lod.bco-dmo.org/id/dataset-parameter/806401.rdf
Name: sdFe_II
Units: micromolar (uM)
Description: <p>Standard deviation of Fe_II</p>
http://lod.bco-dmo.org/id/dataset-parameter/806402.rdf
Name: Fed
Units: micromolar (uM)
Description: <p>Total dissolved iron</p>
http://lod.bco-dmo.org/id/dataset-parameter/806403.rdf
Name: sdFed
Units: micromolar (uM)
Description: <p>Standard deviation of Fed</p>
http://lod.bco-dmo.org/id/dataset-parameter/806404.rdf
Name: Fe_III_d
Units: micromolar (uM)
Description: <p>Dissolved ferric iron</p>
http://lod.bco-dmo.org/id/dataset-parameter/806405.rdf
Name: sdFe_III_d
Units: micromolar (uM)
Description: <p>Standard deviation of Fe_III_d</p>
http://lod.bco-dmo.org/id/dataset-parameter/806406.rdf
Name: DIC
Units: millimolar (mM)
Description: <p>Dissolved inorganic carbon</p>
http://lod.bco-dmo.org/id/dataset-parameter/806407.rdf
Name: sdDIC
Units: millimolar (mM)
Description: <p>Standard deviation of DIC</p>
http://lod.bco-dmo.org/id/dataset-parameter/806408.rdf
Name: PO4
Units: micromolar (uM)
Description: <p>Dissolved orthophosphate</p>
http://lod.bco-dmo.org/id/dataset-parameter/806409.rdf
Name: sdPO4
Units: micromolar (uM)
Description: <p>Standard deviation of PO4</p>
http://lod.bco-dmo.org/id/dataset-parameter/806410.rdf
Name: Mnd
Units: micromolar (uM)
Description: <p>Total dissolved manganese</p>
http://lod.bco-dmo.org/id/dataset-parameter/806411.rdf
Name: sdMnd
Units: micromolar (uM)
Description: <p>Standard deviation of Mnd</p>
http://lod.bco-dmo.org/id/dataset-parameter/806412.rdf
Name: NH4
Units: micromolar (uM)
Description: <p>Dissolved ammonium</p>
http://lod.bco-dmo.org/id/dataset-parameter/806413.rdf
Name: sdNH4
Units: micromolar (uM)
Description: <p>Standard deviation of NH4</p>
http://lod.bco-dmo.org/id/dataset-parameter/806414.rdf
Name: NO2
Units: micromolar (uM)
Description: <p>Dissolved nitrite</p>
http://lod.bco-dmo.org/id/dataset-parameter/806415.rdf
Name: sdNO2
Units: micromolar (uM)
Description: <p>Standard deviation of NO2</p>
http://lod.bco-dmo.org/id/dataset-parameter/806416.rdf
Name: Br
Units: micromolar (uM)
Description: <p>Dissolved bromide</p>
http://lod.bco-dmo.org/id/dataset-parameter/806417.rdf
Name: sdBr
Units: micromolar (uM)
Description: <p>Standard deviation of Br</p>
http://lod.bco-dmo.org/id/dataset-parameter/806418.rdf
Name: NO3
Units: micromolar (uM)
Description: <p>Dissolved nitrate</p>
http://lod.bco-dmo.org/id/dataset-parameter/806419.rdf
Name: sdNO3
Units: micromolar (uM)
Description: <p>Standard deviation of NO3</p>
http://lod.bco-dmo.org/id/dataset-parameter/806420.rdf
Name: Cl
Units: millimolar (mM)
Description: <p>Dissolved chloride</p>
http://lod.bco-dmo.org/id/dataset-parameter/806421.rdf
Name: sdCl
Units: millimolar (mM)
Description: <p>Standard deviation of Cl</p>
http://lod.bco-dmo.org/id/dataset-parameter/806422.rdf
Name: SO42
Units: millimolar (mM)
Description: <p>Sulfate</p>
http://lod.bco-dmo.org/id/dataset-parameter/806423.rdf
Name: sdSO42
Units: millimolar (mM)
Description: <p>Standard deviation of SO42</p>
http://lod.bco-dmo.org/id/dataset-parameter/806424.rdf
Name: TA
Units: millimolar (mM)
Description: <p>Total Alkalinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/806425.rdf
Name: sdTA
Units: millimolar (mM)
Description: <p>Standard deviation of TA</p>
http://lod.bco-dmo.org/id/dataset-parameter/806426.rdf
Name: date
Units: unitless
Description: <p>Date; format: yyyy-mm-dd</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
36790
https://darchive.mblwhoilibrary.org/bitstream/1912/25549/1/dataset-806105_pore-water-depth-profiles-gom2017__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.806105.1
download
onLine
dataset
<p>Sediments were collected and profiled immediately with voltammetric Hg/Au microelectrodes deployed on a computer-controlled micromanipulator (Beckler et al., 2016). Sediment pore waters were then extracted from the same core and either preserved until analysis or analyzed immediately onboard ship. Sampling and analyses were conducted immediately after sediment collection to minimize artifacts from exposure to the atmosphere.</p>
<p>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. After profiling, sediments were immediately sliced under N₂ atmosphere and pore waters extracted by centrifugation at 3000 rpm under N₂ atmosphere. Finally, pore waters were immediately filtered (0.2 µM PSE Puradisc syringe filters, Whatman) under N₂ atmosphere and either preserved at -20C until analysis (Br⁻, NO₂⁻, NO₃⁻, SO₄²⁻), preserved at 4C after acidification (NH₄⁺), dispensed directly into reagents for analysis (Fe(II), Fe<sub>d</sub>, Mn<sub>d</sub>, SPO₄³⁻), or analyzed immediately (DIC, TA). Br⁻, NO₂⁻, NO₃⁻, and SO₄²⁻ were measured by non-suppressed HPLC with UV detection (Beckler et al., 2014). NH₄⁺ was measured spectrophopotmetrically by the indophenol blue method (Strickland and Parsons, 1972), Fe<sub>d</sub> and Fe(II) were measured by the ferrozine method after addition or not of hydroxylamine (Stookey, 1970). Mn<sub>d</sub> was measured by the porphyrin kinetic spectrophotometric method (Madison et al., 2011) modified to account for dissolved Fe(II) interferences (Owings et al., 2020). SPO₄³⁻ was measured spectrophotometrically using the molybdate-blue method after natural color correction to avoid interferences from dissolved silica and sulfides (Murphy and Riley, 1962). DIC was measured by flow injection analysis with conductivity detection after spiking samples with 10 mM ZnCl₂ to prevent dissolved sulfide interferences (Hall and Aller, 1992). Finally, TA was measured by acid titration in an open-cell with continuous pH measurements (Dickson et al., 2007; Rassmann et al., 2016). All errors reported for the electrochemical measurements represent the standard deviation of at least triplicate measurements. Errors of all other parameters represent the analytical error propagated from calibration curves, dilution, and instrumental drift.</p>
<p><strong>Problem report:</strong> Some of the data are missing because pore water volumes were too low to make all the measurements.</p>
Specified by the Principal Investigator(s)
<p>Chromatographic data were processed using Voltint (Bristow and Taillefert, 2008), a Matlabᵀᴹ-based software developed for these applications. Spectrophotometric measurements were processed manually.</p>
<p><strong>BCO-DMO Processing:</strong><br />
- added date column using original year, month, and day columns.</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
Flow Injection Analysis
Flow Injection Analysis
PI Supplied Instrument Name: Flow Injection Analysis PI Supplied Instrument Description:Flow Injection Analysis with peristaltic pump (Gilson), conductivity detector (Fisher Scientific), and integrator with LC-100 software (Analytical Systems, Inc.) Instrument Name: Flow Injection Analyzer Instrument Short Name:FIA Instrument Description: An instrument that performs flow injection analysis. Flow injection analysis (FIA) is an approach to chemical analysis that is accomplished by injecting a plug of sample into a flowing carrier stream. FIA is an automated method in which a sample is injected into a continuous flow of a carrier solution that mixes with other continuously flowing solutions before reaching a detector. Precision is dramatically increased when FIA is used instead of manual injections and as a result very specific FIA systems have been developed for a wide array of analytical techniques. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB36/
HPLC
HPLC
PI Supplied Instrument Name: HPLC PI Supplied Instrument Description:Br⁻, NO₂⁻, NO₃⁻, and SO₄²⁻ were measured by non-suppressed HPLC with UV detection Instrument Name: High-Performance Liquid Chromatograph Instrument Short Name:HPLC Instrument Description: A High-performance liquid chromatograph (HPLC) is a type of liquid chromatography used to separate compounds that are dissolved in solution. HPLC instruments consist of a reservoir of the mobile phase, a pump, an injector, a separation column, and a detector. Compounds are separated by high pressure pumping of the sample mixture onto a column packed with microspheres coated with the stationary phase. The different components in the mixture pass through the column at different rates due to differences in their partitioning behavior between the mobile liquid phase and the stationary phase. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB11/
MC-800 multi-corer
MC-800 multi-corer
PI Supplied Instrument Name: MC-800 multi-corer PI Supplied Instrument Description:Sediment cores were obtained by a MC-800 multi-corer. Instrument Name: Multi Corer Instrument Short Name:Multi Corer Instrument 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. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/51/
spectrophopotmeter
spectrophopotmeter
PI Supplied Instrument Name: spectrophopotmeter PI Supplied Instrument Description:NH₄⁺ was measured spectrophopotmetrically Instrument Name: Spectrophotometer Instrument Short Name:Spectrophotometer Instrument Description: An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB20/
Cruise: SAV-17-15
SAV-17-15
R/V Savannah
Community Standard Description
R/V Savannah
vessel
SAV-17-15
Martial Taillefert
Georgia Institute of Technology
R/V Savannah
Community Standard Description
R/V Savannah
vessel