http://lod.bco-dmo.org/id/dataset/817797
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
2020-07-02
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Sediment geochemistry from push cores collected during HOV Alvin dives during the R/V Atlantis cruise AT42-05 in Guaymas Basin, Gulf of California (27 00.00 N, -111 20.00 W) in November 2018
2020-07-02
publication
2020-07-02
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2021-01-25
publication
https://doi.org/10.26008/1912/bco-dmo.817797.1
Samantha B. Joye
University of Georgia
principalInvestigator
Richard N. Peterson
Coastal Carolina University
principalInvestigator
Andreas Teske
University of North Carolina at Chapel Hill
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: Joye, S. B., Teske, A. P., Peterson, R. N. (2021) Sediment geochemistry from push cores collected during HOV Alvin dives during the R/V Atlantis cruise AT42-05 in Guaymas Basin, Gulf of California (27 00.00 N, -111 20.00 W) in November 2018. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2020-07-02 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.817797.1 [access date]
Sediment geochemistry AT42-05 Dataset Description: <p>Sediment geochemistry from push cores obtained using the human-occupied deep-diving vehicle (HOV) Alvin dives 4991-5000 during the R/V Atlantis cruise AT42-05 in Guaymas Basin, Gulf of California (27 00.00 N, -111 20.00 W) in November&nbsp; 2018.</p> Methods and Sampling: <p>Sediment samples were collected by the DSV Alvin using PVC push cores.&nbsp; Upon arrival at the surface the cores were described and cataloged prior to being sectioned into discrete depth intervals.&nbsp; Porewater was separated from the sediment using a manually-actuated pore water press.&nbsp; Porewater and sediment samples were preserved and analyzed as follows:</p>
<p>1) Nutrients (DOC, TDN, NOx, NO2, NH4, PO4, TDP): Porewater sample was filtered through a pre-rinsed 0.2 um regenerated cellulose Target2 syringe filter (Thermo Scientific, Prod. No. F25047), collected into an HDPE bottle and stored frozen at -20°C until analysis.&nbsp; Individual analytes were analyzed as follows:</p>
<p>DOC was determined using high temperature catalytic combustion and an NDIR detector following the method described in Sugimura and Suzuki, 1988 (<em>A high-temperature catalytic oxidation method for the determination of non-volatile dissolved organic carbon in seawater by direct injection of liquid sample. Mar. Chem., 24: 105-131</em>).&nbsp;</p>
<p>TDN was determined using high temperature combustion and a chemiluminescence detector following the method described in Watanabe et. al, 2007 (<em>Conversion efficiency of the high-temperature combustion technique for dissolved organic carbon and total dissolved nitrogen analysis.&nbsp; Intern. J. Environ. Anal. Chem., 87: 387-399</em>).</p>
<p>NOx was determined using chemical reduction and a nitric oxide detector following the method described by Garside, 1982 (<em>A chemiluminescent technique for the determination of nanomolar concentrations of nitrate and nitrite in seawater. Mar. Chem. 11: 159-167</em>).&nbsp;</p>
<p>NO2 was determined using the colorimetric method described by Bendschneider and Robinson, 1952 (<em>A new spectrophotometric method for the determination of nitrite in sea water.</em> J. <em>Mar. Res.</em>, 11: 87) as reproduced by Parsons, Marta, and Lalli, 1984 (<em>Determination of Nitrite. </em>&nbsp;<em>A manual of chemical and biological methods for seawater analysis pp. 7-9</em>).</p>
<p>NH4 was determined using the colorimetric method described by Solorzano, 1969 (<em>Determination of ammonia in natural waters by the phenolhypochlorite method.</em>&nbsp; <em>Limnol. Oceanogr., 14: 799-801</em>).</p>
<p>PO4 was determined using the colorimetric method described by Strickland and Parsons, 1972 (<em>Determination of reactive phosphorus</em>. <em>A practical handbook of seawater analysis. Fisheries Research Board of Canada, pp. 49-52</em>).</p>
<p>TDP was determined using the colorimetric method described by Solorzano and Sharp, 1980 (<em>Determination of total dissolved phosphorous and particulate phosphorous in natural waters.</em>&nbsp; <em>Limnol. Oceanogr., 25: 754-758).</em></p>
<p>Sediment pH was determined using a sediment probe (Oakton, Prod. No. 35634-50) and measured immediately during core sectioning; the probe was calibrated using NBS standards.</p>
<p>Pore water pH was determined using a Ross electrode (Thermo Fisher, Prod. No. 8103BNUWP) that was calibrated using NBS standards.</p>
<p>2) Alkalinity: Porewater alkalinity was determined using the spectrophotometric method described by Sarazin et al., 1999 (<em>A rapid and accurate spectroscopic method for alkalinity measurements in sea water samples. Water Research 33:290-294)./</em></p>
<p>3) CH4: Sediment samples (3 cubic centimeters) were collected into a glass serum vial, preserved with 1M NaOH (3 milliliters), crimp-sealed with a butyl rubber stopper and stored at room temperature until analysis.&nbsp; CH4 was determined by headspace analysis using an SRI 8610C gas chromatograph equipped with a flame ionization detector and SRI Hayesep D 6’x1/8” column (Prod. No. 8600-PKDB).</p>
<p>4) H2S: Porewater sample was collected into a 15 mL centrifuge tube containing 2M zinc acetate and stored at 5°C until analysis.&nbsp; H2S was determined using the colorimetric method described by Cline, 1969 (<em>Spectrophotometric determination of hydrogen sulfide in natural waters.&nbsp; Limnol. Oceanogr., 14: 454-458</em>).</p>
<p>5) Sulfate (SO4): Porewater sample was filtered through a pre-rinsed 0.2 μm regenerated cellulose Target2 syringe filter (Thermo Scientific, Prod. No. F25047) into a 7 mL scintillation vial. Samples were acidified with 10 μL of concentrated HNO3 per 1 mL sample, sealed with a PTFE lined cap, and stored at room temperature until analysis. Sample analysis was performed using KOH eluent supplied by a Dionex EGC III KOH Eluent Generator Cartridge (Prod. No. 074532), Dionex CR-ATC Continuously Regenerated Trap Column (Prod. No. 060477), Dionex AERS 500 Electronically Regenerated Suppressor (Prod. No. 082541), Dionex IonPac AG19 Guard Column (Prod. No. 062888), Dionex IonPac AS19 Analytical Column (Prod. No. 062886) and Dionex CRD 200 RFIC Carbonate Removal Device (Prod. No. 062986). Reference - Weston et al. 2006, Biogeochemistry 77: 375-408.</p>
<p>6) Chloride (Cl): Porewater sample was filtered through a pre-rinsed 0.2 μm regenerated cellulose Target2 syringe filter (Thermo Scientific, Prod. No. F25047) into a 7 mL scintillation vial. Samples were acidified with 10 μL of concentrated HNO3 per 1 mL sample, sealed with a PTFE lined cap, and stored at room temperature until analysis. Sample analysis was performed using KOH eluent supplied by a Dionex EGC III KOH Eluent Generator Cartridge (Prod. No. 074532), Dionex CR-ATC Continuously Regenerated Trap Column (Prod. No. 060477), Dionex AERS 500 Electronically Regenerated Suppressor (Prod. No. 082541), Dionex IonPac AG19 Guard Column (Prod. No. 062888), Dionex IonPac AS19 Analytical Column (Prod. No. 062886) and Dionex CRD 200 RFIC Carbonate Removal Device (Prod. No. 062986). Reference - Weston et al. 2006, Biogeochemistry 77: 375-408.</p>
<p>7) Calculated Values: Values for NO3, DIN, DON, DOP were calculated as follows:<br />
NO3 = NOx - NO2<br />
DIN = NOx + NH4<br />
DON = TDN - DIN<br />
DOP= TDP - PO4</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1357360 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1357360
completed
Samantha B. Joye
University of Georgia
706-542-5893
Dept. of Marine Sciences 325 Sanford Drive
Athens
GA
30602
USA
mjoye@uga.edu
pointOfContact
Richard N. Peterson
Coastal Carolina University
843-349-4057
Department of Coastal and Marine Systems Science P.O. Box 261954
Conway
SC
29528-6054
USA
rpeters2@coastal.edu
pointOfContact
Andreas Teske
University of North Carolina at Chapel Hill
508-287-1648
Department of Marine Sciences 3117B Venable Hall, CB 3300
Chapel Hill
NC
27599
USA
teske@email.unc.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
ALVIN_Dive
Site
lat_decdeg
lon_decdeg
Date_processed
Core
Depth_cm
Depth_cm_OLW
sediment_pH
porewater_pH
salinity
NO2_uM
NO2_uM_bdl
Nox_uM
NO3_uM
DIN_uM
TDN_uM
NH4_uM
DON_uM
PO4_uM
TDP_uM
DOP_uM
DOP_uM_bdl
DIN_DIP
DON_DOP
DOC_uM
Alkalinity_mM
CH4_uM
H2S_mM
H2S_mM_bdl
Sulfate_mM
Chloride_mM
Porosity_pcent
SOM_LOI_pcent
TPN_pcent
TPC_pcent
POC_pcent
PIC_pcent
PIC_pcent_bdl
TPP_umol_P_g_sediment
TPP_pcent
Shimadzu Instruments GC-2014 Gas Chromatograph with FID Detector and Methanizer
SRI Instruments 8610C Gas Chromatograph with FID Detector
DIONEX Corporation ICS-2000 Ion Chromatography System
Oakton, Prod. No. 35634-50 and a Ross electrode (Thermo Fisher, Prod. No. 8103BNUWP)
Hach Company DR 2800 Spectrophotometer
Shimadzu Instruments UV1601 Spectrophotometer
Shimadzu Instruments TOC-Vcph Total Organic Carbon Analyzer with ASI-V Autosampler and TNM Total Nitrogen Analyzer
theme
None, User defined
dive_id
site
latitude
longitude
date
core id
depth core
flag
pH
salinity
Nitrite
nitrate plus nitrite
Nitrate
Dissolved Inorganic Nitrogen
Total Dissolved Nitrogen
Ammonium
Dissolved Organic Nitrogen
reactive phosphorus (PO4)
Total Dissolved Phosphorus
Dissolved Organic Phosphorus
No BCO-DMO term
dissolved organic Carbon
total alkalinity (TA)
methane
sulfide
sulfate
chloride
sediment porosity
Total Particulate Nitrogen
total particulate Carbon
particulate organic Carbon (POC)
particulate inorganic Carbon
Total Particulate Phosphorus
featureType
BCO-DMO Standard Parameters
Gas Chromatograph
Gas Chromatograph
Ion Chromatograph
pH Sensor
Spectrophotometer
Spectrophotometer
Total Organic Carbon Analyzer
instrument
BCO-DMO Standard Instruments
AT42-05_Alvin_Dives
AT42-05
service
Deployment Activity
Guaymas Basin, Gulf of California, 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.
Collaborative Research: Microbial Carbon cycling and its interactions with Sulfur and Nitrogen transformations in Guaymas Basin hydrothermal sediments
https://osprey.bco-dmo.org/project/474317
Collaborative Research: Microbial Carbon cycling and its interactions with Sulfur and Nitrogen transformations in Guaymas Basin hydrothermal sediments
<p><em>Description from NSF award abstract:</em><br />
Hydrothermally active sediments in the Guaymas Basin are dominated by novel microbial communities that catalyze important biogeochemical processes in these seafloor ecosystems. This project will investigate genomic potential, physiological capabilities and biogeochemical roles of key uncultured organisms from Guaymas sediments, especially the high-temperature anaerobic methane oxidizers that occur specifically in hydrothermally active sediments (ANME-1Guaymas). The study will focus on their role in carbon transformations, but also explore their potential involvement in sulfur and nitrogen transformations. First-order research topics include quantifying anaerobic methane oxidation under high temperature,in situ concentrations of phosphorus and methane , and with alternate electron acceptors; sulfate and sulfur-dependent microbial pathways and isotopic signatures under these conditions; and nitrogen transformations in methane-oxidizing microbial communities, hydrothermal mats and sediments.</p>
<p>This integrated biogeochemical and microbiological research will explore the pathways of and environmental controls on the consumption and production of methane, other alkanes, inorganic carbon, organic acids and organic matter that fuel the Guaymas sedimentary microbial ecosystem. The hydrothermal sediments of Guaymas Basin provide a spatially compact, high-activity location for investigating novel modes of methane cycling and carbon assimilation into microbial biomass. In the case of anaerobic methane oxidation, the high temperature and pressure tolerance of Guaymas Basin methane-oxidizing microbial communities, and their potential to uncouple from the dominant electron acceptor sulfate, vastly increase the predicted subsurface habitat space and biogeochemical role for anaerobic microbial methanotrophy in global deep subsurface diagenesis. Further, microbial methane production and oxidation interlocks with syulfur and nitrogen transformations, which will be explored at the organism and process level in hydrothermal sediment microbial communities and mats of Guaymas Basin. In general, first-order research tasks (rate measurements, radiotracer incorporation studies, genomes, in situ microgradients) define the key microbial capabilities, pathways and processes that mediate chemical exchange between the subsurface hydrothermal/seeps and deep ocean waters.</p>
Guaymas Basin Interactions
largerWorkCitation
project
eng; USA
oceans
Guaymas Basin, Gulf of California, Mexico
-111.4076
-111.4036
26.9998
27.0122
2018-11-17
2018-11-26
Guaymas Basin, Gulf of California, 27.00 N, 111.00W
0
BCO-DMO catalogue of parameters from Sediment geochemistry from push cores collected during HOV Alvin dives during the R/V Atlantis cruise AT42-05 in Guaymas Basin, Gulf of California (27 00.00 N, -111 20.00 W) in November 2018
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/818114.rdf
Name: ALVIN_Dive
Units: unitless
Description: <p>Alvin dive number</p>
http://lod.bco-dmo.org/id/dataset-parameter/818115.rdf
Name: Site
Units: unitless
Description: <p>Site identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/818116.rdf
Name: lat_decdeg
Units: decimal degrees
Description: <p>latitude; north is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/818117.rdf
Name: lon_decdeg
Units: decimal degrees
Description: <p>longitude; east is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/818118.rdf
Name: Date_processed
Units: yyyy-mm-dd
Description: <p>Date when core was sectioned for geochemical analysis</p>
http://lod.bco-dmo.org/id/dataset-parameter/818119.rdf
Name: Core
Units: unitless
Description: <p>Identifier to differentiate push cores taken during an ALVIN dive</p>
http://lod.bco-dmo.org/id/dataset-parameter/818120.rdf
Name: Depth_cm
Units: cm
Description: <p>Sediment sampling depth; OLW = overlying water</p>
http://lod.bco-dmo.org/id/dataset-parameter/818121.rdf
Name: Depth_cm_OLW
Units: unitless
Description: <p>OLW flag for sediment sampling depth (OLW = overlying water)</p>
http://lod.bco-dmo.org/id/dataset-parameter/818122.rdf
Name: sediment_pH
Units: unitless; pH scale
Description: <p>pH taken during core sectioning; method detection limit = 0.05</p>
http://lod.bco-dmo.org/id/dataset-parameter/818123.rdf
Name: porewater_pH
Units: unitless; pH scale
Description: <p>pH taken during porewater geochemistry processing; method detection limit = 0.05</p>
http://lod.bco-dmo.org/id/dataset-parameter/818124.rdf
Name: salinity
Units: Practical Salinity Units (PSU)
Description: <p>Pore water salinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/818125.rdf
Name: NO2_uM
Units: micromol/L
Description: <p>Pore water concentrations of nitrite; method detection limit = 0.1</p>
http://lod.bco-dmo.org/id/dataset-parameter/818126.rdf
Name: NO2_uM_bdl
Units: unitless
Description: <p>BDL flag for pore water concentrations of nitrite (bdl = below detection limit); method detection limit = 0.1</p>
http://lod.bco-dmo.org/id/dataset-parameter/818127.rdf
Name: Nox_uM
Units: micromol/L
Description: <p>Pore water concentrations of nitrite and nitrate; method detection limit = 0.2</p>
http://lod.bco-dmo.org/id/dataset-parameter/818128.rdf
Name: NO3_uM
Units: micromol/L
Description: <p>Pore water concentrations of nitrate (Nox - NO2); method detection limit = 0.1</p>
http://lod.bco-dmo.org/id/dataset-parameter/818129.rdf
Name: DIN_uM
Units: micromol/L
Description: <p>Pore water concentrations of dissolved inorganic nitrogen; method detection limit = 0.2</p>
http://lod.bco-dmo.org/id/dataset-parameter/818130.rdf
Name: TDN_uM
Units: micromol/L
Description: <p>Pore water concentrations of total dissolved nitrogen; method detection limit = 0.5</p>
http://lod.bco-dmo.org/id/dataset-parameter/818131.rdf
Name: NH4_uM
Units: micromol/L
Description: <p>Pore water concentrations of ammonium; method detection limit = 0.1</p>
http://lod.bco-dmo.org/id/dataset-parameter/818132.rdf
Name: DON_uM
Units: micromol/L
Description: <p>Pore water concentrations of dissolved organic nitrogen; method detection limit = 1</p>
http://lod.bco-dmo.org/id/dataset-parameter/818133.rdf
Name: PO4_uM
Units: micromol/L
Description: <p>Pore water concentrations of phosphate; method detection limit = 0.1</p>
http://lod.bco-dmo.org/id/dataset-parameter/818134.rdf
Name: TDP_uM
Units: micromol/L
Description: <p>Pore water concentrations of total dissolved phosphate; method detection limit = 0.1</p>
http://lod.bco-dmo.org/id/dataset-parameter/818135.rdf
Name: DOP_uM
Units: micromol/L
Description: <p>Pore water concentrations of dissolved organic phosphate; method detection limit = 0.1</p>
http://lod.bco-dmo.org/id/dataset-parameter/818136.rdf
Name: DOP_uM_bdl
Units: unitless
Description: <p>BDL flag for pore water concentrations of dissolved organic phosphate (bdl = below detection limit); method detection limit = 0.1</p>
http://lod.bco-dmo.org/id/dataset-parameter/818137.rdf
Name: DIN_DIP
Units: unitless
Description: <p>Pore water ratios of dissolved inorganic nitrogen to dissolved inorganic phosphate; method detection limit = 0.1</p>
http://lod.bco-dmo.org/id/dataset-parameter/818138.rdf
Name: DON_DOP
Units: unitless
Description: <p>Pore water ratios of dissolved organic nitrogen to dissolved organic phosphate; method detection limit = 0.5</p>
http://lod.bco-dmo.org/id/dataset-parameter/818139.rdf
Name: DOC_uM
Units: micromol/L
Description: <p>Porewater concentrations of dissolved organic carbon; method detection limit = 1</p>
http://lod.bco-dmo.org/id/dataset-parameter/818140.rdf
Name: Alkalinity_mM
Units: mmol/L
Description: <p>Pore water alkalinity; method detection limit = 0.05</p>
http://lod.bco-dmo.org/id/dataset-parameter/818141.rdf
Name: CH4_uM
Units: micromol/L
Description: <p>Pore water concentrations of methane; method detection limit = 0.1</p>
http://lod.bco-dmo.org/id/dataset-parameter/818142.rdf
Name: H2S_mM
Units: mmol/L
Description: <p>Pore water concentrations of hydrogen sulfide; method detection limit = 0.1</p>
http://lod.bco-dmo.org/id/dataset-parameter/818143.rdf
Name: H2S_mM_bdl
Units: unitless
Description: <p>BDL flag for pore water concentrations of hydrogen sulfide (bdl = below detection limit); method detection limit = 0.1</p>
http://lod.bco-dmo.org/id/dataset-parameter/818144.rdf
Name: Sulfate_mM
Units: mmol/L
Description: <p>Pore water concentrations of sulfate; method detection limit = 0.1</p>
http://lod.bco-dmo.org/id/dataset-parameter/818145.rdf
Name: Chloride_mM
Units: mmol/L
Description: <p>Pore water concentrations of chloride</p>
http://lod.bco-dmo.org/id/dataset-parameter/818146.rdf
Name: Porosity_pcent
Units: %
Description: <p>Sediment porosity</p>
http://lod.bco-dmo.org/id/dataset-parameter/818147.rdf
Name: SOM_LOI_pcent
Units: %
Description: <p>Sediment organic matter (Loss on ignition); method detection limit = 0.2</p>
http://lod.bco-dmo.org/id/dataset-parameter/818148.rdf
Name: TPN_pcent
Units: %
Description: <p>Sediment total particulate nitrogen</p>
http://lod.bco-dmo.org/id/dataset-parameter/818149.rdf
Name: TPC_pcent
Units: %
Description: <p>Sediment total particulate carbon</p>
http://lod.bco-dmo.org/id/dataset-parameter/818150.rdf
Name: POC_pcent
Units: %
Description: <p>Sediment particulate organic carbon</p>
http://lod.bco-dmo.org/id/dataset-parameter/818151.rdf
Name: PIC_pcent
Units: %
Description: <p>Sediment particulate inorganic carbon</p>
http://lod.bco-dmo.org/id/dataset-parameter/818152.rdf
Name: PIC_pcent_bdl
Units: unitless
Description: <p>BDL flag for sediment particulate inorganic carbon (bdl = below detection limit)</p>
http://lod.bco-dmo.org/id/dataset-parameter/818153.rdf
Name: TPP_umol_P_g_sediment
Units: micromol P/gram sediment
Description: <p>Sediment total particulate phosphate</p>
http://lod.bco-dmo.org/id/dataset-parameter/818154.rdf
Name: TPP_pcent
Units: %
Description: <p>Sediment total particulate phosphate (percent)</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
18057
https://darchive.mblwhoilibrary.org/bitstream/1912/26614/1/dataset-817797_at42-05-sediment-geochemistry__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.817797.1
download
onLine
dataset
<p>Sediment samples were collected by the DSV Alvin using PVC push cores.&nbsp; Upon arrival at the surface the cores were described and cataloged prior to being sectioned into discrete depth intervals.&nbsp; Porewater was separated from the sediment using a manually-actuated pore water press.&nbsp; Porewater and sediment samples were preserved and analyzed as follows:</p>
<p>1) Nutrients (DOC, TDN, NOx, NO2, NH4, PO4, TDP): Porewater sample was filtered through a pre-rinsed 0.2 um regenerated cellulose Target2 syringe filter (Thermo Scientific, Prod. No. F25047), collected into an HDPE bottle and stored frozen at -20°C until analysis.&nbsp; Individual analytes were analyzed as follows:</p>
<p>DOC was determined using high temperature catalytic combustion and an NDIR detector following the method described in Sugimura and Suzuki, 1988 (<em>A high-temperature catalytic oxidation method for the determination of non-volatile dissolved organic carbon in seawater by direct injection of liquid sample. Mar. Chem., 24: 105-131</em>).&nbsp;</p>
<p>TDN was determined using high temperature combustion and a chemiluminescence detector following the method described in Watanabe et. al, 2007 (<em>Conversion efficiency of the high-temperature combustion technique for dissolved organic carbon and total dissolved nitrogen analysis.&nbsp; Intern. J. Environ. Anal. Chem., 87: 387-399</em>).</p>
<p>NOx was determined using chemical reduction and a nitric oxide detector following the method described by Garside, 1982 (<em>A chemiluminescent technique for the determination of nanomolar concentrations of nitrate and nitrite in seawater. Mar. Chem. 11: 159-167</em>).&nbsp;</p>
<p>NO2 was determined using the colorimetric method described by Bendschneider and Robinson, 1952 (<em>A new spectrophotometric method for the determination of nitrite in sea water.</em> J. <em>Mar. Res.</em>, 11: 87) as reproduced by Parsons, Marta, and Lalli, 1984 (<em>Determination of Nitrite. </em>&nbsp;<em>A manual of chemical and biological methods for seawater analysis pp. 7-9</em>).</p>
<p>NH4 was determined using the colorimetric method described by Solorzano, 1969 (<em>Determination of ammonia in natural waters by the phenolhypochlorite method.</em>&nbsp; <em>Limnol. Oceanogr., 14: 799-801</em>).</p>
<p>PO4 was determined using the colorimetric method described by Strickland and Parsons, 1972 (<em>Determination of reactive phosphorus</em>. <em>A practical handbook of seawater analysis. Fisheries Research Board of Canada, pp. 49-52</em>).</p>
<p>TDP was determined using the colorimetric method described by Solorzano and Sharp, 1980 (<em>Determination of total dissolved phosphorous and particulate phosphorous in natural waters.</em>&nbsp; <em>Limnol. Oceanogr., 25: 754-758).</em></p>
<p>Sediment pH was determined using a sediment probe (Oakton, Prod. No. 35634-50) and measured immediately during core sectioning; the probe was calibrated using NBS standards.</p>
<p>Pore water pH was determined using a Ross electrode (Thermo Fisher, Prod. No. 8103BNUWP) that was calibrated using NBS standards.</p>
<p>2) Alkalinity: Porewater alkalinity was determined using the spectrophotometric method described by Sarazin et al., 1999 (<em>A rapid and accurate spectroscopic method for alkalinity measurements in sea water samples. Water Research 33:290-294)./</em></p>
<p>3) CH4: Sediment samples (3 cubic centimeters) were collected into a glass serum vial, preserved with 1M NaOH (3 milliliters), crimp-sealed with a butyl rubber stopper and stored at room temperature until analysis.&nbsp; CH4 was determined by headspace analysis using an SRI 8610C gas chromatograph equipped with a flame ionization detector and SRI Hayesep D 6’x1/8” column (Prod. No. 8600-PKDB).</p>
<p>4) H2S: Porewater sample was collected into a 15 mL centrifuge tube containing 2M zinc acetate and stored at 5°C until analysis.&nbsp; H2S was determined using the colorimetric method described by Cline, 1969 (<em>Spectrophotometric determination of hydrogen sulfide in natural waters.&nbsp; Limnol. Oceanogr., 14: 454-458</em>).</p>
<p>5) Sulfate (SO4): Porewater sample was filtered through a pre-rinsed 0.2 μm regenerated cellulose Target2 syringe filter (Thermo Scientific, Prod. No. F25047) into a 7 mL scintillation vial. Samples were acidified with 10 μL of concentrated HNO3 per 1 mL sample, sealed with a PTFE lined cap, and stored at room temperature until analysis. Sample analysis was performed using KOH eluent supplied by a Dionex EGC III KOH Eluent Generator Cartridge (Prod. No. 074532), Dionex CR-ATC Continuously Regenerated Trap Column (Prod. No. 060477), Dionex AERS 500 Electronically Regenerated Suppressor (Prod. No. 082541), Dionex IonPac AG19 Guard Column (Prod. No. 062888), Dionex IonPac AS19 Analytical Column (Prod. No. 062886) and Dionex CRD 200 RFIC Carbonate Removal Device (Prod. No. 062986). Reference - Weston et al. 2006, Biogeochemistry 77: 375-408.</p>
<p>6) Chloride (Cl): Porewater sample was filtered through a pre-rinsed 0.2 μm regenerated cellulose Target2 syringe filter (Thermo Scientific, Prod. No. F25047) into a 7 mL scintillation vial. Samples were acidified with 10 μL of concentrated HNO3 per 1 mL sample, sealed with a PTFE lined cap, and stored at room temperature until analysis. Sample analysis was performed using KOH eluent supplied by a Dionex EGC III KOH Eluent Generator Cartridge (Prod. No. 074532), Dionex CR-ATC Continuously Regenerated Trap Column (Prod. No. 060477), Dionex AERS 500 Electronically Regenerated Suppressor (Prod. No. 082541), Dionex IonPac AG19 Guard Column (Prod. No. 062888), Dionex IonPac AS19 Analytical Column (Prod. No. 062886) and Dionex CRD 200 RFIC Carbonate Removal Device (Prod. No. 062986). Reference - Weston et al. 2006, Biogeochemistry 77: 375-408.</p>
<p>7) Calculated Values: Values for NO3, DIN, DON, DOP were calculated as follows:<br />
NO3 = NOx - NO2<br />
DIN = NOx + NH4<br />
DON = TDN - DIN<br />
DOP= TDP - PO4</p>
Specified by the Principal Investigator(s)
<p><strong>BCO-DMO Processing Notes:</strong><br />
- data submitted in Excel file "Joye_OCE_1357360_Data_Submission_AT4205_sediment.xlsx" sheet 1 extracted to csv<br />
- added conventional header with dataset name, PI name, version date<br />
- modified parameter names to conform with BCO-DMO naming conventions: spaces, +, and - changed to underscores; changed µ to u; removed #, (, )<br />
- converted latitude and longitude from degrees-decimal-minutes to decimal-degrees, rounded to 4 decimal places<br />
- re-formatted date from d/m/yy to yyyy-mm-dd<br />
- extracted strings from numeric columns and added to new adjacent columns: OLW from depth and bdl from O2_uM, DOP_uM, H2S_mM, PIC_pcent<br />
- changed blank cells to 'nd' for 'no data'</p>
<p>&nbsp;</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
Shimadzu Instruments GC-2014 Gas Chromatograph with FID Detector and Methanizer
Shimadzu Instruments GC-2014 Gas Chromatograph with FID Detector and Methanizer
PI Supplied Instrument Name: Shimadzu Instruments GC-2014 Gas Chromatograph with FID Detector and Methanizer Instrument Name: Gas Chromatograph Instrument Short Name:Gas Chromatograph Instrument Description: Instrument separating gases, volatile substances, or substances dissolved in a volatile solvent by transporting an inert gas through a column packed with a sorbent to a detector for assay. (from SeaDataNet, BODC) Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB02/
SRI Instruments 8610C Gas Chromatograph with FID Detector
SRI Instruments 8610C Gas Chromatograph with FID Detector
PI Supplied Instrument Name: SRI Instruments 8610C Gas Chromatograph with FID Detector Instrument Name: Gas Chromatograph Instrument Short Name:Gas Chromatograph Instrument Description: Instrument separating gases, volatile substances, or substances dissolved in a volatile solvent by transporting an inert gas through a column packed with a sorbent to a detector for assay. (from SeaDataNet, BODC) Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB02/
DIONEX Corporation ICS-2000 Ion Chromatography System
DIONEX Corporation ICS-2000 Ion Chromatography System
PI Supplied Instrument Name: DIONEX Corporation ICS-2000 Ion Chromatography System Instrument Name: Ion Chromatograph Instrument Short Name:Ion Chromatograph Instrument Description: Ion chromatography is a form of liquid chromatography that measures concentrations of ionic species by separating them based on their interaction with a resin. Ionic species separate differently depending on species type and size. Ion chromatographs are able to measure concentrations of major anions, such as fluoride, chloride, nitrate, nitrite, and sulfate, as well as major cations such as lithium, sodium, ammonium, potassium, calcium, and magnesium in the parts-per-billion (ppb) range. (from http://serc.carleton.edu/microbelife/research_methods/biogeochemical/ic.html)
Oakton, Prod. No. 35634-50 and a Ross electrode (Thermo Fisher, Prod. No. 8103BNUWP)
Oakton, Prod. No. 35634-50 and a Ross electrode (Thermo Fisher, Prod. No. 8103BNUWP)
PI Supplied Instrument Name: Oakton, Prod. No. 35634-50 and a Ross electrode (Thermo Fisher, Prod. No. 8103BNUWP) Instrument Name: pH Sensor Instrument Short Name:pH Sensor Instrument Description: An instrument that measures the hydrogen ion activity in solutions.
The overall concentration of hydrogen ions is inversely related to its pH. The pH scale ranges from 0 to 14 and indicates whether acidic (more H+) or basic (less H+).
Hach Company DR 2800 Spectrophotometer
Hach Company DR 2800 Spectrophotometer
PI Supplied Instrument Name: Hach Company DR 2800 Spectrophotometer 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/
Shimadzu Instruments UV1601 Spectrophotometer
Shimadzu Instruments UV1601 Spectrophotometer
PI Supplied Instrument Name: Shimadzu Instruments UV1601 Spectrophotometer 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/
Shimadzu Instruments TOC-Vcph Total Organic Carbon Analyzer with ASI-V Autosampler and TNM Total Nitrogen Analyzer
Shimadzu Instruments TOC-Vcph Total Organic Carbon Analyzer with ASI-V Autosampler and TNM Total Nitrogen Analyzer
PI Supplied Instrument Name: Shimadzu Instruments TOC-Vcph Total Organic Carbon Analyzer with ASI-V Autosampler and TNM Total Nitrogen Analyzer Instrument Name: Total Organic Carbon Analyzer Instrument Short Name:TOC analyzer Instrument Description: A unit that accurately determines the carbon concentrations of organic compounds typically by detecting and measuring its combustion product (CO2). See description document at: http://bcodata.whoi.edu/LaurentianGreatLakes_Chemistry/bs116.pdf Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB04/
Deployment: AT42-05_Alvin_Dives
AT42-05_Alvin_Dives
HOV Alvin
Community Standard Description
International Council for the Exploration of the Sea
HOV Alvin
submarine-manned
AT42-05_Alvin_Dives
Andreas Teske
University of North Carolina at Chapel Hill
Cruise: AT42-05
AT42-05
R/V Atlantis
Community Standard Description
International Council for the Exploration of the Sea
R/V Atlantis
vessel
AT42-05
Andreas Teske
University of North Carolina at Chapel Hill
HOV Alvin
Community Standard Description
International Council for the Exploration of the Sea
HOV Alvin
submarine-manned
R/V Atlantis
Community Standard Description
International Council for the Exploration of the Sea
R/V Atlantis
vessel