http://lod.bco-dmo.org/id/dataset/945927
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
2024-12-12
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Sediment core porewater and particulate measurements from three sites on the Louisiana Shelf sampled during R/V Pelican cruises in August 2021
2024-12-12
publication
2024-12-12
revision
BCO-DMO Linked Data URI
2024-12-12
creation
http://lod.bco-dmo.org/id/dataset/945927
Shaily Rahman
University of Colorado at Boulder
principalInvestigator
Jeffrey W. Krause
Dauphin Island Sea Lab
principalInvestigator
Lindsey R. Lemke
Dauphin Island Sea Lab
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: Lemke, L. R., Roseburrough, R., Siersma, A., Rahman, S., Krause, J. W. (2024) Sediment core porewater and particulate measurements from three sites on the Louisiana Shelf sampled during R/V Pelican cruises in August 2021. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-12-12 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/945927 [access date]
Sediment porewater and particulates on Louisiana Shelf Dec 2021-Aug 2022 Dataset Description: <p>This dataset provides information on initial conditions from topset delta sediment&nbsp;prior to a major storm event. Less than two weeks after this initial sampling, Hurricane Ida made landfall on August 29th, 2021.</p>
<p>A companion project allowed for additional sampling after the event to study important aspects of silica cycling in coastal sediments.&nbsp;For post-storm data, please see related dataset https://www.bco-dmo.org/dataset/915912.</p> Methods and Sampling: <p><strong>I. Field sampling</strong><br />
Sample collection took place during R/V Pelican cruise PE22-05 in the northern part of the Gulf of Mexicao, specifically the Louisiana Shelf region dominated by the discharge of the Mississippi River plume. At each site, an 8-spot&nbsp;Ocean Instruments Multi-corer&nbsp;collected sediment that was sectioned in 2 cm intervals and placed into 50mL metal clean, acid washed tubes, pre-weighed and labeled microcentrifuge tubes for porosity, and freezer-safe Ziploc bags. Tubes were centrifuged at 3500 rpm for 10 minutes to extract and filter supernatant. The filtered supernatant was placed into a metal clean/acid washed tube and frozen for later analysis of metal and dissolved silica.&nbsp;The 50mL tube of sediment was frozen at -20°C for further analysis.</p>
<p><strong>II. Porewater Dissolved Constituents</strong><br />
Where there was sufficient supernatant (porewater) from the centrifuged sediment sample, it was divided for three different analyses: dissolved silica analysis (DSi), nutrient analysis (Skalar), and metal concentrations (ICPMS).&nbsp;&nbsp;</p>
<p>1. <strong><em>DSi analysis</em></strong>: 50uL of porewater was analyzed for dissolved Si(OH)<sub>4</sub>&nbsp;concentration using a spectrophotometric molybdate-blue method (Brzezinski &amp; Nelson, 1986).</p>
<p>2.&nbsp;<strong><em>Skalar Analysis (N+N, NH4, PO4)</em></strong>: Porewater was diluted with Milli‐Q (18.2 MΩ&nbsp;* cm) water and run through a Skalar Analyzer for Nitrate and Nitrite, Phosphorus, and Ammonia. For detection limits, please refer to the&nbsp;descriptions in the Parameters section below.</p>
<p>3.&nbsp;<em><strong>ICPMS (Metal Concentrations)</strong></em>: Porewater was reconstituted in dilute HNO<sub>3</sub>&nbsp;and diluted to minimize salt interferences before analysis on a Thermo Scientific Element XR High Resolution-ICP-MS housed at the University of Southern Mississippi at the Stennis Space Center. The following elements are reported in the data from the ICPMS analysis:&nbsp; magnesium (Mg), sulfur (S),&nbsp;calcium (Ca), manganese (Mn), iron (Fe), potassium (K), cesium (Cs), uranium (U), lithium (Li), vanadium (V), cobalt (Co), nickel (Ni), copper (Cu), strontium (Sr), molybdenum (Mo), barium (Ba), phosphorus (P), and aluminum (Al), along with phosphorus (P) and silica (Si).&nbsp; For each element's detection limit, please see the description in the Parameters section below.&nbsp;&nbsp;&nbsp;</p>
<p><strong>Sediments</strong><br />
Sediments were analyzed for physical properties, chemical properties, phases of silica, and isotopic composition. Each&nbsp;section below describes the specific methods in greater detail.&nbsp;&nbsp;</p>
<p><strong>III. Sediment properties</strong><br />
<em><strong>Porosity</strong></em><br />
For porosity measurements, microcentrifuge tubes were placed in a drying oven at 60°C until the sediment was dry. Once dried, tubes were weighed. Porosity was calculated as in Comeaux et al. (2012).</p>
<p><em><strong>Loss on ignition (LOI)</strong></em><br />
For loss on ignition (LOI) analysis, dried sediment was ground into a fine consistency using a mortar and pestle. Then 1g of the ground sediment was weighed into pre-muffled and pre-weighed porcelain crucibles. To remove any carbon from the presence of calcium carbonate, samples were fumed by adding 1mL of mili-Q to each crucible and placing samples into a desiccator with 10 mL of 12M HCl for 6 hours (Harris et al. 2001,&nbsp;Ramnarine et al. 2011, Walthert et al. 2010). After 6 hours, samples were placed in a vacuum oven for roughly 16 hours, until dry (Ramnarine et al. 2011, Walthert et al. 2010). Once dry, samples were kept in the oven and weighed one at a time to keep moisture out of samples. If sample was still acidic (yellow in color), 1 mL of mili-Q was added and the sample was dried again. Sediment was ground again into a fine powder.</p>
<p>After the above preparation, fumed and ground sediment was weighed (100 mg) in triplicate into pre-weighed and muffled liquid scintillation (LSC) vials. Samples were combusted at 550°C for 6 hours (Kemp et al. 2021). After combustion, weights were recorded, and loss of organic matter was calculated (Kemp et al. 2021).</p>
<p><strong>IV. Sediment Silica Pools</strong>&nbsp;&nbsp;</p>
<p><strong><em>Sequential Extractions</em>&nbsp;&nbsp;</strong><br />
Frozen samples were thawed, homogenized, and 50 mg were weighed in triplicates (per depth) into pre-labeled 50 mL centrifuge tubes (Krause et al., 2017; Pickering et al., 2020). Samples with procedural blanks (in triplicate) then went through the sequential extraction process. The sequential extraction methodology separates silica into operationally defined pools based on kinetics, reaction conditions and reaction sequence (DeMaster, 1981; Michalopoulos and Aller, 2004; Rahman et al., 2016; Pickering et al., 2020).</p>
<p><strong><em>Operational Definitions</em></strong><br />
Based on prior studies, we use the following nomenclature:</p>
<p>1. <strong>Si-HCl</strong>: Mild acid-leachable pre-treatment; Highly reactive silica associated with authigenic clays and metal oxide coatings (Michalopoulos and Aller, 2004).</p>
<p>2. <strong>Si-Alk</strong>: Mild alkaline-leachable digestion completed after acid pretreatment; Frees reactive silica associated with the biogenic silica pool (Michalopoulos and Aller, 2004).</p>
<p>3. <strong>Si-NaOH (Alk)</strong>: Harsh NaOH digestion done after Si-HCl and Si-Alk (Rahman et al., 2016; Rahman et al., 2017); Associated with the reactive lithogenic Si (LSi) pool and the comparatively refractory “dark bSiO<sub>2</sub>” (e.g. sponge spicules and Rhizaria).</p>
<p>4.&nbsp;<strong>tbSi</strong>: Following the traditional definition of biogenic silica (DeMaster, 1981), with no acid pre-treatment.</p>
<p>5.&nbsp;<strong>Si-NaOH (TbSi)</strong>: Harsh NaOH digestion done after T-bSi.</p>
<p><br />
<strong>V. Sediment Organic matter</strong></p>
<p><strong><em>Preparation</em></strong><br />
Same preparation as that listed above for Loss on Ignition</p>
<p><strong><em>Particulate Organic Carbon and Nitrogen content and isotopes (δ<sup>13</sup>C and δ<sup>15</sup>N)</em></strong><br />
After fumigation (explained above), ~60 to 70 mg of sediment were packed in 5x9mm silver capsules, which were then packed in tin 5x9mm capsules in triplicate (UC Davis protocol recommendation). Samples were placed in a 96 well plate and kept in a desiccator until shipped to UC Davis for isotopic (δ13C and δ15N) analysis (Krause et al. 2017).</p>
<p>Results from UC Davis had an absolute accuracy for calibrated reference materials of&nbsp;±0.04 ‰ (±0.05 ‰ SD) for δ13C and ±0.05 ‰ (±0.05 ‰ SD) for δ15N. Core depth 24-26cm was the only sample below detection (9.7ug) for δ15N, which is represented as 0 on the data sheet.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1924585 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1924585
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1923802 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1923802
onGoing
Shaily Rahman
University of Colorado at Boulder
Campus Box 450
Institute of Arctic and Alpine Research Campus Box 450
Boulder
CO
80309-0450
USA
shaily.rahman@colorado.edu
pointOfContact
Jeffrey W. Krause
Dauphin Island Sea Lab
251-861-2141 x2289
101 Bienville Blvd
Dauphin Island
AL
36528
USA
jkrause@disl.edu
pointOfContact
Lindsey R. Lemke
Dauphin Island Sea Lab
101 Bienville Blvd.
Dauphin Island
AL
36528
USA
lindsey.r.lemke@gmail.com
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Box core
centrifuge
Skalar San++ Automated Wet Chemistry Analyzer
continuous flow interface at UC Davis
Elemental analyzer at UC Davis
Thermo Scientific Element XR high resolution inductively coupled plasma-mass spectrometer (HR-ICP-MS)
CF-IRMS at UC Davis (continuous flow isotope ratio mass spectrometer)
Ocean Instruments Multicorer
Thermo Scientific Genesys 10S UV-Vis Spectrophotometer
theme
None, User defined
Box Corer
Centrifuge
Continuous Flow Analyzer
Continuous Flow Interface for Mass Spectrometers
Elemental Analyzer
Inductively Coupled Plasma Mass Spectrometer
Isotope-ratio Mass Spectrometer
Multi Corer
Spectrophotometer
instrument
BCO-DMO Standard Instruments
PE22-05
service
Deployment Activity
Louisiana 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.
Collaborative Research: Understanding substrate limitation and Lithium and Silicon isotope fractionation during secondary clay formation in marine systems
https://osprey.bco-dmo.org/project/840739
Collaborative Research: Understanding substrate limitation and Lithium and Silicon isotope fractionation during secondary clay formation in marine systems
<p><em>NSF Award Abstract:</em><br />
A long-standing topic of investigation in the field of chemical oceanography is understanding the processes that deliver elements to, and remove them from, seawater. There has long been a "missing sink" in the global marine silicon (Si) budget in that removal to sediments did not appear to balance the inputs from rivers. Several decades ago, it was postulated that "reverse weathering" in marine sediments could be this missing sink. In this process, the weathering process that takes place on land, whereby silicon is removed from minerals and dissolved in water, would be reversed and these minerals would be reconstituted in marine sediments through the formation of clays. Evidence for this process was very difficult to obtain, and only recently have studies using advanced measurement techniques shown that the global magnitude of marine reverse weathering could account for all the missing sink term in the global Si budget. If validated, this means reverse weathering would represent the largest individual sink for marine Si identified to date, with most of this burial occurring in a relatively small area of the ocean, the land-sea interface. Moreover, the continued upward revision of the marine reverse weathering rate has implications for the sequestration of other elements (e.g. iron, aluminum) and for other coastal processes (e.g. ocean acidification, as carbon dioxide is a byproduct of the reverse weathering process). This project aims to understand the most important factors affecting how fast reverse weathering occurs, and developing new approaches to evaluate this process in the field environment. Beyond the scientific pursuits, this project will support an early career researcher, a postdoctoral investigator, a graduate student, and undergraduate interns. It will also support high school outreach through science fair participation and annual scholarships for students wishing to pursue Marine Science education. This project will develop a community outreach activity to be used annually during the Atlanta Science Festival, Georgia's biggest science fair that showcases science and technology to the public. Finally, it will build capacity for silicon isotope measurements in the U.S.</p>
<p>In this project, the investigators propose to understand the driving factors of marine secondary clay formation and facilitate the determination of reaction degree in the field using a novel dual silicon and lithium stable isotope approach. The overarching goals are: 1) to better constrain the geochemical factors, kinetics, and mechanisms involved in secondary clay formation from diatom-produced silica (bSiO2); this will be done by conducting controlled laboratory experiments using pure mineral phases, diatom bSiO2, and artificial seawater; 2) to test the validity of the isolated geochemical factors by conducting mesocosm incubation experiments using field sediment materials, diatom bSiO2, and seawater; and 3) to experimentally determine whether laboratory-derived Li and Si isotope fractionations are valid during secondary clay formation under marine sediment conditions. This work addresses one of the eight Ocean Sciences Priorities identified in The National Research Council's 2015-2025 Decadal Survey of Ocean Sciences, specifically "How have ocean biogeochemical and physical processes contributed to today's climate and its variability, and how will this system change over the next century?" These results have fundamental importance to understanding the factors regulating marine elemental sequestration (e.g. Si, C, Fe, Al, Mg, K) and those driving global climate through oceanic CO2 evolution, a byproduct of the reverse weathering reaction, in marine sediments.</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
Marine Secondary Clay Formation
largerWorkCitation
project
eng; USA
oceans
Louisiana Shelf
-90.4793
-89.763
28.9398
28.942
2021-08-17
2021-08-17
Northern Gulf of Mexico & Laboratory-based work
0
BCO-DMO catalogue of parameters from Sediment core porewater and particulate measurements from three sites on the Louisiana Shelf sampled during R/V Pelican cruises in August 2021
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
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
https://osprey.bco-dmo.org/dataset/945927/data/download
download
onLine
dataset
<p><strong>I. Field sampling</strong><br />
Sample collection took place during R/V Pelican cruise PE22-05 in the northern part of the Gulf of Mexicao, specifically the Louisiana Shelf region dominated by the discharge of the Mississippi River plume. At each site, an 8-spot&nbsp;Ocean Instruments Multi-corer&nbsp;collected sediment that was sectioned in 2 cm intervals and placed into 50mL metal clean, acid washed tubes, pre-weighed and labeled microcentrifuge tubes for porosity, and freezer-safe Ziploc bags. Tubes were centrifuged at 3500 rpm for 10 minutes to extract and filter supernatant. The filtered supernatant was placed into a metal clean/acid washed tube and frozen for later analysis of metal and dissolved silica.&nbsp;The 50mL tube of sediment was frozen at -20°C for further analysis.</p>
<p><strong>II. Porewater Dissolved Constituents</strong><br />
Where there was sufficient supernatant (porewater) from the centrifuged sediment sample, it was divided for three different analyses: dissolved silica analysis (DSi), nutrient analysis (Skalar), and metal concentrations (ICPMS).&nbsp;&nbsp;</p>
<p>1. <strong><em>DSi analysis</em></strong>: 50uL of porewater was analyzed for dissolved Si(OH)<sub>4</sub>&nbsp;concentration using a spectrophotometric molybdate-blue method (Brzezinski &amp; Nelson, 1986).</p>
<p>2.&nbsp;<strong><em>Skalar Analysis (N+N, NH4, PO4)</em></strong>: Porewater was diluted with Milli‐Q (18.2 MΩ&nbsp;* cm) water and run through a Skalar Analyzer for Nitrate and Nitrite, Phosphorus, and Ammonia. For detection limits, please refer to the&nbsp;descriptions in the Parameters section below.</p>
<p>3.&nbsp;<em><strong>ICPMS (Metal Concentrations)</strong></em>: Porewater was reconstituted in dilute HNO<sub>3</sub>&nbsp;and diluted to minimize salt interferences before analysis on a Thermo Scientific Element XR High Resolution-ICP-MS housed at the University of Southern Mississippi at the Stennis Space Center. The following elements are reported in the data from the ICPMS analysis:&nbsp; magnesium (Mg), sulfur (S),&nbsp;calcium (Ca), manganese (Mn), iron (Fe), potassium (K), cesium (Cs), uranium (U), lithium (Li), vanadium (V), cobalt (Co), nickel (Ni), copper (Cu), strontium (Sr), molybdenum (Mo), barium (Ba), phosphorus (P), and aluminum (Al), along with phosphorus (P) and silica (Si).&nbsp; For each element's detection limit, please see the description in the Parameters section below.&nbsp;&nbsp;&nbsp;</p>
<p><strong>Sediments</strong><br />
Sediments were analyzed for physical properties, chemical properties, phases of silica, and isotopic composition. Each&nbsp;section below describes the specific methods in greater detail.&nbsp;&nbsp;</p>
<p><strong>III. Sediment properties</strong><br />
<em><strong>Porosity</strong></em><br />
For porosity measurements, microcentrifuge tubes were placed in a drying oven at 60°C until the sediment was dry. Once dried, tubes were weighed. Porosity was calculated as in Comeaux et al. (2012).</p>
<p><em><strong>Loss on ignition (LOI)</strong></em><br />
For loss on ignition (LOI) analysis, dried sediment was ground into a fine consistency using a mortar and pestle. Then 1g of the ground sediment was weighed into pre-muffled and pre-weighed porcelain crucibles. To remove any carbon from the presence of calcium carbonate, samples were fumed by adding 1mL of mili-Q to each crucible and placing samples into a desiccator with 10 mL of 12M HCl for 6 hours (Harris et al. 2001,&nbsp;Ramnarine et al. 2011, Walthert et al. 2010). After 6 hours, samples were placed in a vacuum oven for roughly 16 hours, until dry (Ramnarine et al. 2011, Walthert et al. 2010). Once dry, samples were kept in the oven and weighed one at a time to keep moisture out of samples. If sample was still acidic (yellow in color), 1 mL of mili-Q was added and the sample was dried again. Sediment was ground again into a fine powder.</p>
<p>After the above preparation, fumed and ground sediment was weighed (100 mg) in triplicate into pre-weighed and muffled liquid scintillation (LSC) vials. Samples were combusted at 550°C for 6 hours (Kemp et al. 2021). After combustion, weights were recorded, and loss of organic matter was calculated (Kemp et al. 2021).</p>
<p><strong>IV. Sediment Silica Pools</strong>&nbsp;&nbsp;</p>
<p><strong><em>Sequential Extractions</em>&nbsp;&nbsp;</strong><br />
Frozen samples were thawed, homogenized, and 50 mg were weighed in triplicates (per depth) into pre-labeled 50 mL centrifuge tubes (Krause et al., 2017; Pickering et al., 2020). Samples with procedural blanks (in triplicate) then went through the sequential extraction process. The sequential extraction methodology separates silica into operationally defined pools based on kinetics, reaction conditions and reaction sequence (DeMaster, 1981; Michalopoulos and Aller, 2004; Rahman et al., 2016; Pickering et al., 2020).</p>
<p><strong><em>Operational Definitions</em></strong><br />
Based on prior studies, we use the following nomenclature:</p>
<p>1. <strong>Si-HCl</strong>: Mild acid-leachable pre-treatment; Highly reactive silica associated with authigenic clays and metal oxide coatings (Michalopoulos and Aller, 2004).</p>
<p>2. <strong>Si-Alk</strong>: Mild alkaline-leachable digestion completed after acid pretreatment; Frees reactive silica associated with the biogenic silica pool (Michalopoulos and Aller, 2004).</p>
<p>3. <strong>Si-NaOH (Alk)</strong>: Harsh NaOH digestion done after Si-HCl and Si-Alk (Rahman et al., 2016; Rahman et al., 2017); Associated with the reactive lithogenic Si (LSi) pool and the comparatively refractory “dark bSiO<sub>2</sub>” (e.g. sponge spicules and Rhizaria).</p>
<p>4.&nbsp;<strong>tbSi</strong>: Following the traditional definition of biogenic silica (DeMaster, 1981), with no acid pre-treatment.</p>
<p>5.&nbsp;<strong>Si-NaOH (TbSi)</strong>: Harsh NaOH digestion done after T-bSi.</p>
<p><br />
<strong>V. Sediment Organic matter</strong></p>
<p><strong><em>Preparation</em></strong><br />
Same preparation as that listed above for Loss on Ignition</p>
<p><strong><em>Particulate Organic Carbon and Nitrogen content and isotopes (δ<sup>13</sup>C and δ<sup>15</sup>N)</em></strong><br />
After fumigation (explained above), ~60 to 70 mg of sediment were packed in 5x9mm silver capsules, which were then packed in tin 5x9mm capsules in triplicate (UC Davis protocol recommendation). Samples were placed in a 96 well plate and kept in a desiccator until shipped to UC Davis for isotopic (δ13C and δ15N) analysis (Krause et al. 2017).</p>
<p>Results from UC Davis had an absolute accuracy for calibrated reference materials of&nbsp;±0.04 ‰ (±0.05 ‰ SD) for δ13C and ±0.05 ‰ (±0.05 ‰ SD) for δ15N. Core depth 24-26cm was the only sample below detection (9.7ug) for δ15N, which is represented as 0 on the data sheet.</p>
Specified by the Principal Investigator(s)
<p>Raw data were input into Microsoft Excel (Version 2302) to calculate final reported values.</p>
<ul>
<li>Porosity was calculated as in Comeaux et al. (2012).</li>
<li>Loss of organic matter was calculated as in Kemp et al. (2021).</li>
</ul>
<p>&nbsp;</p>
Specified by the Principal Investigator(s)
- Imported data from source file "BCO-DMO_SiLi_Sediment.Summary-Broken Links.xlsx" into the BCO-DMO data system.
- Added R/V Pelican official cruise IDs corresponding to the submitted cruise name.
- Combined separate date and time columns into a single datetime column
- Kept local datetime but added a column for ISO8601 formatted UTC datetime
- Removed percent (%) signs from the column values
- Modified parameter (column) names to conform with BCO-DMO naming conventions. The only allowed characters are A-Z,a-z,0-9, and underscores. Replaced spaces with underscores.
Specified by BCO-DMO Data Managers
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
Box core
Box core
PI Supplied Instrument Name: Box core PI Supplied Instrument Description:A box core was used on the December 2021 cruise to sample sediments Instrument Name: Box Corer Instrument Short Name:Box Corer Instrument Description: General description of a box corer:
A box corer is a marine geological tool that recovers undisturbed soft surface sediments. It is designed for minimum disturbance of the sediment surface by bow wave effects. Traditionally, it consists of a weighted stem fitted to a square sampling box. The corer is lowered vertically until it impacts with the seabed. At this point the instrument is triggered by a trip as the main coring stem passes through its frame. While pulling the corer out of the sediment a spade swings underneath the sample to prevent loss. When hauled back on board, the spade is under the box. (definition from the SeaVox Device Catalog)
Box corers are one of the simplest and most commonly used types of sediment corers. The stainless steel sampling box can contain a surface sediment block as large as 50cm x 50cm x 75cm with negligible disturbance. Once the sediment is recovered onboard, the sediment box can be detached from the frame and taken to a laboratory for subsampling and further analysis. The core sample size is controlled by the speed at which the corer is lowered into the ocean bottom. When the bottom is firm, a higher speed is required to obtain a complete sample. A depth pinger or other depth indicator is generally used to determine when the box is completely filled with sediment. Once the core box is filled with sediment, the sample is secured by moving the spade-closing lever arm to lower the cutting edge of the spade into the sediment, until the spade completely covers the bottom of the sediment box. (definition from Woods Hole Oceanographic Institution). Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/51/
centrifuge
centrifuge
PI Supplied Instrument Name: centrifuge PI Supplied Instrument Description:Mulitcorer samples were placed into tubes and centrifuged at 3500 rpm for 10 minutes to extract and filter supernatant, which was later used for dissolved silica analysis. Instrument Name: Centrifuge Instrument Short Name: Instrument Description: A machine with a rapidly rotating container that applies centrifugal force to its contents, typically to separate fluids of different densities (e.g., cream from milk) or liquids from solids.
Skalar San++ Automated Wet Chemistry Analyzer
Skalar San++ Automated Wet Chemistry Analyzer
PI Supplied Instrument Name: Skalar San++ Automated Wet Chemistry Analyzer PI Supplied Instrument Description:The Skalar San++ Automated Wet Chemistry Analyzer, also known as continuous flow analyzer, was used to analyze porewater for nitrate, nitrite, phosphorus, and ammonia. Instrument Name: Continuous Flow Analyzer Instrument Short Name:CFA Instrument Description: A sample is injected into a flowing carrier solution passing rapidly through small-bore tubing.
continuous flow interface at UC Davis
continuous flow interface at UC Davis
PI Supplied Instrument Name: continuous flow interface at UC Davis PI Supplied Instrument Description:Samples measured at University of California Davis were run on an elemental analyzer interfaced to a continuous flow isotope ratio mass spectrometer. See Stable Isotope Facility instrument descriptions here: https://stableisotopefacility.ucdavis.edu Instrument Name: Continuous Flow Interface for Mass Spectrometers Instrument Short Name: Instrument Description: A Continuous Flow Interface connects solid and liquid sample preparation devices to instruments that measure isotopic composition. It allows the introduction of the sample and also reference and carrier gases.
Examples: Finnigan MATConFlo II, ThermoScientific ConFlo IV, and Picarro Caddy.
Note: This is NOT an analyzer
Elemental analyzer at UC Davis
Elemental analyzer at UC Davis
PI Supplied Instrument Name: Elemental analyzer at UC Davis PI Supplied Instrument Description:Samples measured at University of California Davis were run on an elemental analyzer interfaced to a continuous flow isotope ratio mass spectrometer. See Stable Isotope Facility instrument descriptions here: https://stableisotopefacility.ucdavis.edu Instrument Name: Elemental Analyzer Instrument Short Name: Instrument Description: Instruments that quantify carbon, nitrogen and sometimes other elements by combusting the sample at very high temperature and assaying the resulting gaseous oxides. Usually used for samples including organic material. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB01/
Thermo Scientific Element XR high resolution inductively coupled plasma-mass spectrometer (HR-ICP-MS)
Thermo Scientific Element XR high resolution inductively coupled plasma-mass spectrometer (HR-ICP-MS)
PI Supplied Instrument Name: Thermo Scientific Element XR high resolution inductively coupled plasma-mass spectrometer (HR-ICP-MS) PI Supplied Instrument Description:Porewater was reconstituted in dilute HNO3 and diluted to minimize salt interferences before analysis on a Thermo Scientific Element XR High Resolution-ICP-MS housed at the University of Southern Mississippi at the Stennis Space Center. Instrument Name: Inductively Coupled Plasma Mass Spectrometer Instrument Short Name:ICP Mass Spec Instrument Description: An ICP Mass Spec is an instrument that passes nebulized samples into an inductively-coupled gas plasma (8-10000 K) where they are atomized and ionized. Ions of specific mass-to-charge ratios are quantified in a quadrupole mass spectrometer. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB15/
CF-IRMS at UC Davis (continuous flow isotope ratio mass spectrometer)
CF-IRMS at UC Davis (continuous flow isotope ratio mass spectrometer)
PI Supplied Instrument Name: CF-IRMS at UC Davis (continuous flow isotope ratio mass spectrometer) PI Supplied Instrument Description:Samples measured at University of California Davis were run on an elemental analyzer interfaced to a continuous flow isotope ratio mass spectrometer. See Stable Isotope Facility instrument descriptions here: https://stableisotopefacility.ucdavis.edu Instrument Name: Isotope-ratio Mass Spectrometer Instrument Short Name:IR Mass Spec; IRMS Instrument Description: The Isotope-ratio Mass Spectrometer is a particular type of mass spectrometer used to measure the relative abundance of isotopes in a given sample (e.g. VG Prism II Isotope Ratio Mass-Spectrometer). Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/
Ocean Instruments Multicorer
Ocean Instruments Multicorer
PI Supplied Instrument Name: Ocean Instruments Multicorer PI Supplied Instrument Description:At each site, an 8-spot Ocean Instruments Multi-corer collected sediment that was sectioned in 2 centimeter intervals 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/
Thermo Scientific Genesys 10S UV-Vis Spectrophotometer
Thermo Scientific Genesys 10S UV-Vis Spectrophotometer
PI Supplied Instrument Name: Thermo Scientific Genesys 10S UV-Vis Spectrophotometer PI Supplied Instrument Description:Porewater was analyzed for dissolved si(OH)4 concentration using a spectrophotometric molybdate-blue method and a Thermo Scientific Genesys 10S UV-Vis 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/
Cruise: PE22-05
PE22-05
R/V Pelican
Community Standard Description
International Council for the Exploration of the Sea
R/V Pelican
vessel
PE22-05
Jeffrey W. Krause
Dauphin Island Sea Lab
R/V Pelican
Community Standard Description
International Council for the Exploration of the Sea
R/V Pelican
vessel