http://lod.bco-dmo.org/id/dataset/813166
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
2020-05-27
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Pore water geochemistry from sediment cores collected on the R/V Nathaniel B. Palmer cruise NBP1601 to the West Antarctic continental shelf in January of 2016
2020-06-08
publication
2020-06-08
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2020-06-17
publication
https://doi.org/10.26008/1912/bco-dmo.813166.1
David J. Burdige
Old Dominion University
principalInvestigator
John P Christensen
New England Oceanographic Laboratory
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: Burdige, D., Christensen , J. (2020) Pore water geochemistry from sediment cores collected on the R/V Nathaniel B. Palmer cruise NBP1601 to the West Antarctic continental shelf in January of 2016. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2020-06-08 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.813166.1 [access date]
Methods and Sampling: Sediment and pore water collection:
Short sediment cores were collected using a Bowers & Connelly megacorer, a multiple coring device that can collect ~20-40 cm long sediment cores with undisturbed sediment surfaces. At two sites (stations 41 and 64) longer cores (up to ~2 m) were also collected with a Kasten corer.
Megacorer cores were either sectioned for solid phase analysis, profiled with polarographic microelectrodes to determine dissolved O2 concentrations, or sectioned in a cold van under N2 for pore water sample extraction (for details see, Komada et al., 2016). Kasten cores were brought into a large cold room on-board ship, laid on their side and one side of the core box removed to expose the sediment in the core. A plastic block was placed against the top of the core to prevent slumping of the sediment during processing, and pore waters were collected from these cores using Rhizon samplers (Seeberg-Elverfeldt et al., 2005) inserted directly into the cores at measured intervals.
Pore water samples collected from both types of cores were filtered through 0.45 µm polycarbonate filters and processed as follows. Samples for alkalinity determinations were stored without a headspace in 3-ml plastic syringes sealed with 3-way stopcocks. Titrated alkalinity samples (acidified to pH ~4 after titration) were stored in plastic snap cap vials, refrigerated and returned to ODU for the analysis of dissolved sulfate. Pore water samples collected for the analysis of total dissolved Fe and Mn were acidified to pH <2 on-board ship with trace metal grade HCl, and store refrigerated until analyzed back at ODU. Samples for pore water silicate analyses were analyzed on board the research vessel. Additional samples for the analysis of other dissolved nutrients (nitrate, nitrite, ammonium, phosphate) were filtered into tightly capped sample vials and frozen for return to NEOL for analysis. Selected pore water samples (collected as described above) were also used for the determination of dissolved organic carbon (DOC). These samples were filtered directly into acid-cleaned and muffled (550 °C for at least 4 h) glass ampules and were then acidified to pH < 2 with 6 N trace metal grade HCl and flame-sealed under a stream of UHP N2 gas. The sealed ampules were stored refrigerated and returned to ODU for analysis.
While it is possible to recover cores with intact sediment-water interfaces using a megacorer, loss of surface sediments is typical during Kasten coring, making it not possible to directly determine absolute depths below the sediment-water interface in a Kasten core. We therefore determined the absolute depths of pore water and solid phase sample intervals from Kasten cores by aligning Kasten core profiles of pore water alkalinity to megacore alkalinity profiles from the same site (Berelson et al., 2005; Komada et al., 2016).
Bottom water collection:
Bottom waters were collected by GO-Flo Bottles ~5-10 m off the seafloor. They were filtered through 0.45 µm polycarbonate filters and processed as described above for pore water samples.
Pore water analyses: Sampled collected for alkalinity determination were titrated aboard ship within 12 hours of collection by automated Gran titration (Hu and Burdige, 2008). Dissolved sulfate was determined on titrated alkalinity samples returned to ODU by ion chromatography and conductivity detection (Thermo-Scientific Dionex ICS-5000; Burdige and Komada, 2011; Komada et al., 2016). Concentrations of DOC were determined at ODU by high temperature combustion using a Shimadzu TOC-V total carbon analyzer (Komada et al., 2013; Komada et al., 2016). Frozen samples for the determination of dissolved nutrients were returned to NEOL and analyzed by autoanalyzer for nitrate and nitrite (Armstrong et al., 1967; Pavlou, 1972), ammonium (Koroleff, 1970; Slawyk and MacIsaac, 1972) and dissolved inorganic phosphate (Drummond and Maher, 1995). Pore water silicate was determined on board the research vessel used fresh pore water samples and a manual colorimetric method following Armstrong et al. (1967).
Pore water dissolved iron was determined colorimetrically at ODU using the ferrozine technique (Stookey, 1970; Viollier et al., 2000). Hydroxylamine-HCl (0.2% final concentration) was added to the samples before analysis, to reduce any dissolved Fe3+ in the samples to Fe2+. The pore water iron results reported here therefore represent total dissolved iron (i.e., Fe2+ plus any Fe3+ in the samples). This was done largely as a precaution against any iron oxidation that may have occurred during sample storage, since it is assumed that virtually all of the dissolved iron in these pore waters exists in situ as Fe2+ (e.g., Viollier et al., 2000).
Samples for the analysis of dissolved manganese were determined with a modification of the colorimetric formaldoxime method (Armstrong et al., 1979; Goto et al., 1962). These modifications were made based on the observation that the amount of EDTA typically added to destroy the Fe-formaldoxime complexes that interfere with the colorimetric determination of the Mn-formaldoxime complexes was insufficient because of the complexation (and presumed competition) of this EDTA by the much higher levels of dissolved Ca2+ and Mg2+ in our pore water samples ( 60 mM assuming a pore water salinity of ~35). Thus it was necessary to increase the amount of EDTA added to the samples so that it exceeded these Ca2+ plus Mg2+ levels.
In our method we made the formaldoxime mixed reagent by dissolving 8 g of hydroxylamine hydrochloride and 4ml formaldehyde (37%) in 200 ml of distilled deionized water. Next we combined 0.5 ml of either a pore water sample or Mn2+ standard with 0.5 ml of distilled deionized water and: 50 µl of the formaldoxime mixed reagent, 50 µl of concentrated (50%) NH4OH, 50 µl of a 20% hydroxylamine hydrochloride solution, and 0.2 ml of a 250 mM EDTA solution. The color of the solution was allowed to develop for 20 min. and then analyzed at 450 nm.
Funding provided by NSF Office of Polar Programs (formerly NSF PLR) (NSF OPP) Award Number: OPP-1551195 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1551195
completed
David J. Burdige
Old Dominion University
757-683-4930
Dept. of Ocean, Earth and Atmospheric Sciences
Norfolk
VA
23529
USA
dburdige@odu.edu
pointOfContact
John P Christensen
New England Oceanographic Laboratory
207-725-0681
74 Orion Street Suite 1
Brunswick
ME
04011
USA
jchriste@newenglandoceanlab.org
pointOfContact
asNeeded
Dataset Version: 1
Unknown
St_ID
Sa_ID
Core
Samp
Depth
Error
pH
Alk
Fe
Mn
SO4
DOC
NO3
NO2
NH4
PO4
Si
ISO_DateTime_UTC
Lat
Lon
Kasten corer
Bowers & Connelly megacorer
Shimadzu TOC-V total carbon analyzer (Komada et al., 2013; Komada et al., 2016).
theme
None, User defined
station
sample identification
sample type
sample description
depth below seafloor
pH
total alkalinity (TA)
Iron
Manganese
sulfate
dissolved organic Carbon
Nitrate
Nitrite
Ammonium
reactive phosphorus (PO4)
Silicon
ISO_DateTime_UTC
latitude
longitude
featureType
BCO-DMO Standard Parameters
GO-FLO Bottle
Gravity Corer
Multi Corer
Nutrient Autoanalyzer
Shimadzu TOC-V Analyzer
instrument
BCO-DMO Standard Instruments
NBP1601
service
Deployment Activity
West Antarctic Shelf
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.
Organic Carbon Oxidation and Iron Remobilization by West Antarctic Shelf Sediments
https://osprey.bco-dmo.org/project/806864
Organic Carbon Oxidation and Iron Remobilization by West Antarctic Shelf Sediments
<p>NSF Award Abstract:</p>
<p>General Statement:</p>
<p>The continental shelf region west of the Antarctic Peninsula has recently undergone dramatic changes and ecosystem shifts, and the community of organisms that live in, or feed off, the sea floor sediments is being impacted by species invasions from the north. Previous studies of these sediments indicate that this community may consume much more of the regional productivity than previously estimated, suggesting that sediments are a rich and important component of this ecosystem and one that may be ripe for dramatic change. Furthermore, under richer sediment conditions, iron is mobilized and released back to the water column. Since productivity in this ecosystem is thought to be limited by the availability of iron, increased rates of iron release from these sediments could stimulate productivity and promote greater overall ecosystem change. In this research, a variety of sites across the shelf region will be sampled to accurately evaluate the role of sediments in consuming ecosystem productivity and to estimate the current level of iron release from the sediments. This project will provide a baseline set of sediment results that will present a more complete picture of the west Antarctic shelf ecosystem, will allow for comparison with water column measurements and for evaluation of the fundamental workings of this important ecosystem. This is particularly important since high latitude systems may be vulnerable to the effects of climate fluctuations. Both graduate and undergraduate students will be trained. Presentations will be made at scientific meetings, at other universities, and at outreach events. A project web site will present key results to the public and explain how this new information improves understanding of Antarctic ecosystems.</p>
<p>
Technical Description of Project:<br />
In order to determine the role of sediments within the west Antarctic shelf ecosystem, this project will determine the rates of sediment organic matter oxidation at a variety of sites across the Palmer Long Term Ecosystem Research (LTER) study region. To estimate the rates of release of iron and manganese from the sediments, these same sites will be sampled for detailed vertical distributions of the concentrations of these metals both in the porewaters and in important mineral phases. Since sediment sampling will be done at LTER sites, the sediment data can be correlated with the rich productivity data set from the LTER. In detail, the project: a) will determine the rates of oxygen consumption, organic carbon oxidation, nutrient release, and iron mobilization by shelf sediments west of the Antarctic Peninsula; b) will investigate the vertical distribution of diagenetic reactions within the sediments; and c) will assess the regional importance of these sediment rates. Sediment cores will be used to determine sediment-water fluxes of dissolved oxygen, total carbon dioxide, nutrients, and the vertical distributions of these dissolved compounds, as well as iron and manganese in the pore waters. Bulk sediment properties of porosity, organic carbon and nitrogen content, carbonate content, biogenic silica content, and multiple species of solid-phase iron, manganese, and sulfur species will also be determined. These measurements will allow determination of total organic carbon oxidation and denitrification rates, and the proportion of aerobic versus anaerobic respiration at each site. Sediment diagenetic modeling will link the processes of organic matter oxidation to metal mobilization. Pore water and solid phase iron and manganese distributions will be used to model iron diagenesis in these sediments and to estimate the iron flux from the sediments to the overlying waters. Finally, the overall regional average and distribution of the sediment processes will be compared with the distributions of seasonally averaged chlorophyll biomass and productivity.</p>
Antarctic Shelf Sediments
largerWorkCitation
project
eng; USA
oceans
West Antarctic Shelf
-71.2217
-62.7317
-67.7717
-64.1583
2016-01-14
2019-01-28
West Antarctic Continental Shelf
0
BCO-DMO catalogue of parameters from Pore water geochemistry from sediment cores collected on the R/V Nathaniel B. Palmer cruise NBP1601 to the West Antarctic continental shelf in January of 2016
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/814557.rdf
Name: St_ID
Units: unitless
Description: <p>station ID number</p>
http://lod.bco-dmo.org/id/dataset-parameter/814558.rdf
Name: Sa_ID
Units: unitless
Description: <p>sample ID (station ID #- core ID #-sample # (BW = bottom water sample; note BW samples have no sample #)</p>
http://lod.bco-dmo.org/id/dataset-parameter/814559.rdf
Name: Core
Units: unitless
Description: <p>core type (H = samples collected by hydrocast; M = mega-corer; K = Kasten corer)</p>
http://lod.bco-dmo.org/id/dataset-parameter/814560.rdf
Name: Samp
Units: unitless
Description: <p>how pore waters/bottom waters were collected (C = centrifugation; R = rhizon sampler; G = hydrocast/GO-Flo bottle; see Methodology for details)</p>
http://lod.bco-dmo.org/id/dataset-parameter/814561.rdf
Name: Depth
Units: centimeters (cm)
Description: <p>sediment depth (relative to the sediment-water interface; 0 = bottom water sample)</p>
http://lod.bco-dmo.org/id/dataset-parameter/814562.rdf
Name: Error
Units: centimeters (cm)
Description: <p>half the thickness of the sediment sample (note: Rhizon samples are collected at discrete depths and there is no error associated with their depths)</p>
http://lod.bco-dmo.org/id/dataset-parameter/814563.rdf
Name: pH
Units: NBS scale
Description: <p>initial pH of sample titrated for alkalinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/814564.rdf
Name: Alk
Units: millimolar (mM)
Description: <p>pore water alkalinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/814565.rdf
Name: Fe
Units: micromolar (uM)
Description: <p>pore water total dissolved iron</p>
http://lod.bco-dmo.org/id/dataset-parameter/814566.rdf
Name: Mn
Units: micromolar (uM)
Description: <p>pore water dissolved Mn</p>
http://lod.bco-dmo.org/id/dataset-parameter/814567.rdf
Name: SO4
Units: millimolar (mM)
Description: <p>pore water dissolved sulfate</p>
http://lod.bco-dmo.org/id/dataset-parameter/814568.rdf
Name: DOC
Units: micromolar (uM)
Description: <p>pore water dissolved organic carbon</p>
http://lod.bco-dmo.org/id/dataset-parameter/814569.rdf
Name: NO3
Units: micromolar (uM)
Description: <p>pore water dissolved nitrate</p>
http://lod.bco-dmo.org/id/dataset-parameter/814570.rdf
Name: NO2
Units: micromolar (uM)
Description: <p>pore water dissolved nitrite</p>
http://lod.bco-dmo.org/id/dataset-parameter/814571.rdf
Name: NH4
Units: micromolar (uM)
Description: <p>pore water dissolved ammonium</p>
http://lod.bco-dmo.org/id/dataset-parameter/814572.rdf
Name: PO4
Units: micromolar (uM)
Description: <p>pore water dissolved orthophosphate</p>
http://lod.bco-dmo.org/id/dataset-parameter/814573.rdf
Name: Si
Units: micromolar (uM)
Description: <p>pore water dissolved silicate</p>
http://lod.bco-dmo.org/id/dataset-parameter/814574.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>station timestamp (UTC) in ISO 8601 format yyyy-mm-ddTHH:MMZ</p>
http://lod.bco-dmo.org/id/dataset-parameter/814575.rdf
Name: Lat
Units: decimal degrees
Description: <p>station latitude, south is negative</p>
http://lod.bco-dmo.org/id/dataset-parameter/814576.rdf
Name: Lon
Units: decimal degrees
Description: <p>station longitude, west is negative</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
43694
https://darchive.mblwhoilibrary.org/bitstream/1912/25876/1/dataset-813166_pore-water-geochemistry__v1.tsv
download
https://doi.org/10.26008/1912/bco-dmo.813166.1
download
onLine
dataset
Sediment and pore water collection:
Short sediment cores were collected using a Bowers & Connelly megacorer, a multiple coring device that can collect ~20-40 cm long sediment cores with undisturbed sediment surfaces. At two sites (stations 41 and 64) longer cores (up to ~2 m) were also collected with a Kasten corer.
Megacorer cores were either sectioned for solid phase analysis, profiled with polarographic microelectrodes to determine dissolved O2 concentrations, or sectioned in a cold van under N2 for pore water sample extraction (for details see, Komada et al., 2016). Kasten cores were brought into a large cold room on-board ship, laid on their side and one side of the core box removed to expose the sediment in the core. A plastic block was placed against the top of the core to prevent slumping of the sediment during processing, and pore waters were collected from these cores using Rhizon samplers (Seeberg-Elverfeldt et al., 2005) inserted directly into the cores at measured intervals.
Pore water samples collected from both types of cores were filtered through 0.45 µm polycarbonate filters and processed as follows. Samples for alkalinity determinations were stored without a headspace in 3-ml plastic syringes sealed with 3-way stopcocks. Titrated alkalinity samples (acidified to pH ~4 after titration) were stored in plastic snap cap vials, refrigerated and returned to ODU for the analysis of dissolved sulfate. Pore water samples collected for the analysis of total dissolved Fe and Mn were acidified to pH <2 on-board ship with trace metal grade HCl, and store refrigerated until analyzed back at ODU. Samples for pore water silicate analyses were analyzed on board the research vessel. Additional samples for the analysis of other dissolved nutrients (nitrate, nitrite, ammonium, phosphate) were filtered into tightly capped sample vials and frozen for return to NEOL for analysis. Selected pore water samples (collected as described above) were also used for the determination of dissolved organic carbon (DOC). These samples were filtered directly into acid-cleaned and muffled (550 °C for at least 4 h) glass ampules and were then acidified to pH < 2 with 6 N trace metal grade HCl and flame-sealed under a stream of UHP N2 gas. The sealed ampules were stored refrigerated and returned to ODU for analysis.
While it is possible to recover cores with intact sediment-water interfaces using a megacorer, loss of surface sediments is typical during Kasten coring, making it not possible to directly determine absolute depths below the sediment-water interface in a Kasten core. We therefore determined the absolute depths of pore water and solid phase sample intervals from Kasten cores by aligning Kasten core profiles of pore water alkalinity to megacore alkalinity profiles from the same site (Berelson et al., 2005; Komada et al., 2016).
Bottom water collection:
Bottom waters were collected by GO-Flo Bottles ~5-10 m off the seafloor. They were filtered through 0.45 µm polycarbonate filters and processed as described above for pore water samples.
Pore water analyses: Sampled collected for alkalinity determination were titrated aboard ship within 12 hours of collection by automated Gran titration (Hu and Burdige, 2008). Dissolved sulfate was determined on titrated alkalinity samples returned to ODU by ion chromatography and conductivity detection (Thermo-Scientific Dionex ICS-5000; Burdige and Komada, 2011; Komada et al., 2016). Concentrations of DOC were determined at ODU by high temperature combustion using a Shimadzu TOC-V total carbon analyzer (Komada et al., 2013; Komada et al., 2016). Frozen samples for the determination of dissolved nutrients were returned to NEOL and analyzed by autoanalyzer for nitrate and nitrite (Armstrong et al., 1967; Pavlou, 1972), ammonium (Koroleff, 1970; Slawyk and MacIsaac, 1972) and dissolved inorganic phosphate (Drummond and Maher, 1995). Pore water silicate was determined on board the research vessel used fresh pore water samples and a manual colorimetric method following Armstrong et al. (1967).
Pore water dissolved iron was determined colorimetrically at ODU using the ferrozine technique (Stookey, 1970; Viollier et al., 2000). Hydroxylamine-HCl (0.2% final concentration) was added to the samples before analysis, to reduce any dissolved Fe3+ in the samples to Fe2+. The pore water iron results reported here therefore represent total dissolved iron (i.e., Fe2+ plus any Fe3+ in the samples). This was done largely as a precaution against any iron oxidation that may have occurred during sample storage, since it is assumed that virtually all of the dissolved iron in these pore waters exists in situ as Fe2+ (e.g., Viollier et al., 2000).
Samples for the analysis of dissolved manganese were determined with a modification of the colorimetric formaldoxime method (Armstrong et al., 1979; Goto et al., 1962). These modifications were made based on the observation that the amount of EDTA typically added to destroy the Fe-formaldoxime complexes that interfere with the colorimetric determination of the Mn-formaldoxime complexes was insufficient because of the complexation (and presumed competition) of this EDTA by the much higher levels of dissolved Ca2+ and Mg2+ in our pore water samples ( 60 mM assuming a pore water salinity of ~35). Thus it was necessary to increase the amount of EDTA added to the samples so that it exceeded these Ca2+ plus Mg2+ levels.
In our method we made the formaldoxime mixed reagent by dissolving 8 g of hydroxylamine hydrochloride and 4ml formaldehyde (37%) in 200 ml of distilled deionized water. Next we combined 0.5 ml of either a pore water sample or Mn2+ standard with 0.5 ml of distilled deionized water and: 50 µl of the formaldoxime mixed reagent, 50 µl of concentrated (50%) NH4OH, 50 µl of a 20% hydroxylamine hydrochloride solution, and 0.2 ml of a 250 mM EDTA solution. The color of the solution was allowed to develop for 20 min. and then analyzed at 450 nm.
Specified by the Principal Investigator(s)
BCO-DMO Data Manager Processing Notes:
* Data from file "pore water data.txt" imported into the BCO-DMO data system.
* added a conventional header with dataset name, PI name, version date
* modified parameter names to conform with BCO-DMO naming conventions (spaces, +, and - changed to underscores).
* blank values and values "-" in this dataset are displayed as "nd" for "no data." nd is the default missing data identifier in the BCO-DMO system. Conrimed that "-" is a missing data identifier with the data submitter.
* Joined with supplemental station information file to add station lat, lon, and ISO 8601 timestamp (UTC) into the dataset.
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
PI Supplied Instrument Name: Instrument Name: GO-FLO Bottle Instrument Short Name:GO-FLO Instrument Description: GO-FLO bottle cast used to collect water samples for pigment, nutrient, plankton, etc. The GO-FLO sampling bottle is specially designed to avoid sample contamination at the surface, internal spring contamination, loss of sample on deck (internal seals), and exchange of water from different depths. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/30/
Kasten corer
Kasten corer
PI Supplied Instrument Name: Kasten corer Instrument Name: Gravity Corer Instrument Short Name:Gravity Corer Instrument Description: The gravity corer allows researchers to sample sediment layers at the bottom of lakes or oceans. The coring device is deployed from the ship and gravity carries it to the seafloor. (http://www.whoi.edu/instruments/viewInstrument.do?id=1079). Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/51/
Bowers & Connelly megacorer
Bowers & Connelly megacorer
PI Supplied Instrument Name: Bowers & Connelly megacorer 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/
PI Supplied Instrument Name: PI Supplied Instrument Description:Frozen samples for the determination of dissolved nutrients were returned to NEOL and analyzed by autoanalyzer for nitrate and nitrite (Armstrong et al., 1967; Pavlou, 1972), ammonium (Koroleff, 1970; Slawyk and MacIsaac, 1972) and dissolved inorganic phosphate (Drummond and Maher, 1995). Instrument Name: Nutrient Autoanalyzer Instrument Short Name:Nutrient Autoanalyzer Instrument Description: Nutrient Autoanalyzer is a generic term used when specific type, make and model were not specified. In general, a Nutrient Autoanalyzer is an automated flow-thru system for doing nutrient analysis (nitrate, ammonium, orthophosphate, and silicate) on seawater samples. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB04/
Shimadzu TOC-V total carbon analyzer (Komada et al., 2013; Komada et al., 2016).
Shimadzu TOC-V total carbon analyzer (Komada et al., 2013; Komada et al., 2016).
PI Supplied Instrument Name: Shimadzu TOC-V total carbon analyzer (Komada et al., 2013; Komada et al., 2016). Instrument Name: Shimadzu TOC-V Analyzer Instrument Short Name:Shimadzu TOC-V Instrument Description: A Shimadzu TOC-V Analyzer measures DOC by high temperature combustion method. Community Standard Description: http://onto.nerc.ac.uk/CAST/124
Cruise: NBP1601
NBP1601
Community Standard Description
International Council for the Exploration of the Sea
RVIB Nathaniel B. Palmer
vessel
NBP1601
David J. Burdige
Old Dominion University
Community Standard Description
International Council for the Exploration of the Sea
RVIB Nathaniel B. Palmer
vessel