http://lod.bco-dmo.org/id/dataset/947790
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
2025-01-02
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Dissolved barium (Ba) concentrations in seawater samples collected on the US GEOTRACES GP17-OCE cruise on R/V Roger Revelle (RR2214) in the South Pacific and Southern Oceans from December 2022 to January 2023
2025-01-02
publication
2025-01-02
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2025-01-06
publication
https://doi.org/10.26008/1912/bco-dmo.947790.1
Tristan J. Horner
Woods Hole Oceanographic Institution
principalInvestigator
Matthew A. Charette
Woods Hole Oceanographic Institution
principalInvestigator
Margot C.F. Debyser
Woods Hole Oceanographic Institution
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: Debyser, M. C., Charette, M. A., Auro, M., Drysdale, J., Swarr, G., Horner, T. J. (2025) Dissolved barium (Ba) concentrations in seawater samples collected on the US GEOTRACES GP17-OCE cruise on R/V Roger Revelle (RR2214) in the South Pacific and Southern Oceans from December 2022 to January 2023. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-01-02 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.947790.1 [access date]
GP17-OCE Dissolved seawater barium concentrations Dataset Description: Methods and Sampling: <p>Clean seawater samples were collected using a GEOTRACES CTD referred to as GT-C/12-liter GoFlo, and also from the Super-GeoFISH towed surface vehicle and from the ship's underway system for 1 sample where bad weather did not allow for the GeoFISH deployment. For more information, see the cruise report. Water samples were filtered through pre-cleaned, 0.2-micrometer (µm) Pall Acropak Supor filter capsules as described elsewhere (e.g., Cutter et al., 2014). Filtered water was collected in 125-milliliter (mL) HDPE bottles (Nalgene) that had been precleaned following the GEOTRACES protocol for trace-metal clean sampling.</p>
<p>Seawater samples were analyzed using a standard methodology for determining dissolved barium (Ba) concentrations in seawater samples. This process involves the use of barium-135 (135Ba) isotope dilution coupled with analysis via inductively coupled plasma mass spectrometry (ICP-MS) using a ThermoScientific iCAP Q operated in Kinetic Energy Dispersion (KED) mode. Solutions containing 100 microliters (μL) of seawater sample, 100 μL of a tellurium (Te) solution, which serves as a monitor for instrumental mass bias, and 100 μL of a 135Ba spike solution were analyzed, eluted to 2 mL with 2% HNO3. The enriched 135Ba isotope spike is BaCO3 obtained from Oak Ridge National Laboratories (batch no.142890) The ratios of barium isotopes, specifically the ratio of 135Ba/137Ba, are measured in the samples. The spike-to-sample ratio is then calculated using standard isotope dilution equations, and the resultant [Ba] in the sample (in nanomoles) was determined based on the quantity of spike added. Optimal spiking is achieved when spiked samples exhibit 135Ba/137Ba between 1.6 and 32.7 (Stracke et al., 2014), noting that our samples exhibited 135Ba/137Ba between 5.65 and 23.40. [Ba] was converted to nanomoles per kilogram (nmol/kg) based on the ocean's average density at the surface, 1.027 grams per cubic centimeter (g/cm3).</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2048604 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2048604
completed
Tristan J. Horner
Woods Hole Oceanographic Institution
508-289-3825
266 Woods Hole Rd. Clark 448, MS# 25
Woods Hole
MA
02543
United States
thorner@whoi.edu
pointOfContact
Matthew A. Charette
Woods Hole Oceanographic Institution
508-289-3205
Marine Chemistry & Geochemistry Clark 439, MS#25
Woods Hole
MA
02543
USA
mcharette@whoi.edu
pointOfContact
Margot C.F. Debyser
Woods Hole Oceanographic Institution
Woods Hole
MA
02543
USA
margot.debyser@whoi.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Cruise_ID
Station_ID
Event_ID
GEOTRC_INSTR
Start_ISO_DateTime_UTC
Start_Date_UTC
Start_Time_UTC
End_ISO_DateTime_UTC
End_Date_UTC
End_Time_UTC
Start_Latitude
Start_Longitude
End_Latitude
End_Longitude
Rosette_Position
Sample_ID
Sample_Depth
Ba_D_CONC_FISH_wtoyqq
SD1_Ba_D_CONC_FISH_wtoyqq
Flag_Ba_D_CONC_FISH_wtoyqq
Ba_D_CONC_UWAY_ththaj
SD1_Ba_D_CONC_UWAY_ththaj
Flag_Ba_D_CONC_UWAY_ththaj
Ba_D_CONC_BOTTLE_xhbqq4
SD1_Ba_D_CONC_BOTTLE_xhbqq4
Flag_Ba_D_CONC_BOTTLE_xhbqq4
Super-GeoFISH towed surface vehicle
12L GoFlo
ThermoScientific iCAP Q
theme
None, User defined
Cruise identfier
station
event
instrument
ISO_DateTime_UTC
date
time of day
latitude
longitude
bottle
sample identification
depth
Barium
quality flag
featureType
BCO-DMO Standard Parameters
GeoFish Towed near-Surface Sampler
GO-FLO Bottle
Inductively Coupled Plasma Mass Spectrometer
instrument
BCO-DMO Standard Instruments
RR2214
service
Deployment Activity
Papeete, Tahiti to Punta Arenas, Chile
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.
U.S. GEOTRACES
http://www.geotraces.org/
U.S. GEOTRACES
GEOTRACES is a SCOR sponsored program; and funding for program infrastructure development is provided by the U.S. National Science Foundation.
GEOTRACES gained momentum following a special symposium, S02: Biogeochemical cycling of trace elements and isotopes in the ocean and applications to constrain contemporary marine processes (GEOSECS II), at a 2003 Goldschmidt meeting convened in Japan. The GEOSECS II acronym referred to the Geochemical Ocean Section Studies To determine full water column distributions of selected trace elements and isotopes, including their concentration, chemical speciation, and physical form, along a sufficient number of sections in each ocean basin to establish the principal relationships between these distributions and with more traditional hydrographic parameters;
* To evaluate the sources, sinks, and internal cycling of these species and thereby characterize more completely the physical, chemical and biological processes regulating their distributions, and the sensitivity of these processes to global change; and
* To understand the processes that control the concentrations of geochemical species used for proxies of the past environment, both in the water column and in the substrates that reflect the water column.
GEOTRACES will be global in scope, consisting of ocean sections complemented by regional process studies. Sections and process studies will combine fieldwork, laboratory experiments and modelling. Beyond realizing the scientific objectives identified above, a natural outcome of this work will be to build a community of marine scientists who understand the processes regulating trace element cycles sufficiently well to exploit this knowledge reliably in future interdisciplinary studies.
Expand "Projects" below for information about and data resulting from individual US GEOTRACES research projects.
U.S. GEOTRACES
largerWorkCitation
program
US GEOTRACES GP17-OCE: Investigating the role of the Southern Ocean's biogeochemical divide in shaping the global distributions of radium and barium isotopes
https://osprey.bco-dmo.org/project/885364
US GEOTRACES GP17-OCE: Investigating the role of the Southern Ocean's biogeochemical divide in shaping the global distributions of radium and barium isotopes
<p><em>NSF Award Abstract:</em><br />
The GEOTRACES program aims to understand the distribution of trace elements and their isotopes in the oceans. Trace elements, by their very nature, are scarce. Despite their scarcity, trace elements are valuable tools for studying marine processes, such as: tracking chemical inputs to the ocean from the land or seafloor, identifying patterns of ocean mixing, and tracing ocean biology. This project will study these processes by measuring and modeling the distributions of two chemically similar elements — radium and barium. These measurements will be made on samples collected as part of the U.S. GEOTRACES GP17-OCE expedition. This expedition will collect samples from the Southern Ocean in late 2022. The Southern Ocean experiences deep mixing, which is important for bringing nutrients to the sea surface. Measuring radium and barium isotopes in these samples will help study the sources, cycling, and sinks of nutrients that support marine biology in the Southern Ocean and beyond. The findings will be shared with regional science teachers and students through a collaboration with the local Sea Grant Program, and the data will support the research of other scientists involved in GEOTRACES.</p>
<p>The last 25 years have seen a paradigm shift in our understanding of the controls on marine nutrient cycles. Rather than arising from local vertical processes, the large-scale distributions of many elements are now thought to arise from processes occurring in the Southern Ocean, which are then communicated to lower latitudes through lateral circulation. A circulation-driven mechanism is also hypothesized to contribute to the global distributions of radium and barium isotopes, but this remains to be tested. In this project, researchers from the Woods Hole Oceanographic Institution will test this hypothesis by analyzing radium and barium isotopes in dissolved and particulate samples collected from the Pacific Sector of the Southern Ocean. These measurements will establish compositions for the southern-sourced mode/intermediate and bottom waters that are important end-members in the global overturning circulation. The team will also study the processes that control the composition of the end-members — particle formation and dissolution, interactions with sediments, hydrothermalism — and assess their significance using statistical and mechanistic modeling. The results will reveal the role of the Southern Ocean in controlling the global distributions of radium and barium isotopes, which will help refine the application of these tracers as tools for studying biogeochemical processes in the present and past oceans.</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>
GP17-OCE Ra and Ba isotopes
largerWorkCitation
project
US GEOTRACES GP17 Section: South Pacific and Southern Ocean (GP17-OCE)
http://www.geotraces.org/
US GEOTRACES GP17 Section: South Pacific and Southern Ocean (GP17-OCE)
<p>The U.S. GEOTRACES GP17-OCE expedition departed Papeete, Tahiti (French Polynesia) on December 1st, 2022 and arrived in Punta Arenas, Chile on January 25th, 2023. The cruise took place in the South Pacific and Southern Oceans aboard the R/V Roger Revelle (cruise ID RR2214) with a team of 34 scientists lead by Ben Twining (Chief Scientist), Jessica Fitzsimmons and Greg Cutter (Co-Chief Scientists). GP17 was planned as a two-leg expedition, with its first leg (GP17-OCE) as a southward extension of the 2018 GP15 Alaska-Tahiti expedition and a second leg (GP17-ANT; December 2023-January 2024) into coastal and shelf waters of Antarctica's Amundsen Sea.</p>
<p>The South Pacific and Southern Oceans sampled by GP17-OCE play critical roles in global water mass circulation and associated global transfer of heat, carbon, and nutrients. Specific oceanographic regions of interest for GP17-OCE included: the most oligotrophic gyre in the global ocean, the Antarctic Circumpolar Current (ACC) frontal region, the previously unexplored Pacific- Antarctic Ridge, the Pacific Deep Water (PDW) flow along the continental slope of South America, and the continental margin inputs potentially emanating from South America.</p>
<p>Further information is available on the <a href="https://usgeotraces.ldeo.columbia.edu/content/gp17-oce" target="_blank">US GEOTRACES website</a> and in the <a href="https://www.bodc.ac.uk/resources/inventories/cruise_inventory/reports/rogerrevelle_rr2214.pdf" target="_blank">cruise report</a> (PDF).</p>
<p><em>NSF Project Title:</em> Collaborative Research: Management and Implementation of US GEOTRACES GP17 Section: South Pacific and Southern Ocean (GP17-OCE)</p>
<p><em>NSF Award Abstract:</em><br />
This award will support the management and implementation of a research expedition from Tahiti to Chile that will enable sampling for a broad suite of trace elements and isotopes (TEI) across oceanographic regions of importance to global nutrient and carbon cycling as part of the U.S. GEOTRACES program. GEOTRACES is a global effort in the field of Chemical Oceanography, the goal of which is to understand the distributions of trace elements and their isotopes in the ocean. Determining the distributions of these elements and isotopes will increase understanding of processes that shape their distributions, such as ocean currents and material fluxes, and also the processes that depend on these elements, such as the growth of phytoplankton and the support of ocean ecosystems. The proposed cruise will cross the South Pacific Gyre, the Antarctic Circumpolar Current, iron-limited Antarctic waters, and the Chilean margin. In combination with a proposed companion GEOTRACES expedition on a research icebreaker (GP17-ANT) that will be joined by two overlapping stations, the team of investigators will create an ocean section from the ocean's most nutrient-poor waters to its highly-productive Antarctic polar region - a region that plays an outsized role in modulating the global carbon cycle. The expedition will support and provide management infrastructure for additional participating science projects focused on measuring specific external fluxes and internal cycling of TEIs along this section.</p>
<p>The South Pacific Gyre and Pacific sector of the Southern Ocean play critical roles in global water mass circulation and associated global transfer of heat, carbon, and nutrients, but they are chronically understudied for TEIs due to their remote locale. These are regions of strong, dynamic fronts where sub-surface water masses upwell and subduct, and biological and chemical processes in these zones determine nutrient stoichiometries and tracer concentrations in waters exported to lower latitudes. The Pacific sector represents an end member of extremely low external TEI surface fluxes and thus an important region to constrain inputs from the rapidly-changing Antarctic continent. Compared to other ocean basins, TEI cycling in these regions is thought to be dominated by internal cycling processes such as biological uptake, regeneration, and scavenging, and these are poorly represented in global ocean models. The cruise will enable funded investigators to address research questions such as: 1) what are relative rates of external TEI fluxes to this region, including dust, sediment, hydrothermal, and cryospheric fluxes? 2) What are the (micro) nutrient regimes that support productivity, and what impacts do biomass accumulation, export, and regeneration have on TEI cycling and stoichiometries of exported material? 3) What are TEI and nutrient stoichiometries of subducting water masses, and how do scavenging and regeneration impact these during transport northward? This management project has several objectives: 1) plan and coordinate a 55-day research cruise in 2021-2022; 2) use both conventional and trace-metal 'clean' sampling systems to obtain TEI samples, as well as facilitate sampling for atmospheric aerosols and large volume particles and radionuclides; 3) acquire hydrographic data and samples for salinity, dissolved oxygen, algal pigments, and macro-nutrients; and deliver these data to relevant repositories; 4) ensure that proper QA/QC protocols, as well as GEOTRACES intercalibration protocols, are followed and reported; 5) prepare the final cruise report to be posted with data; 6) coordinate between all funded cruise investigators, as well as with leaders of proposed GP17-ANT cruise; and 7) conduct broader impact efforts that will engage the public in oceanographic research using immersive technology. The motivations for and at-sea challenges of this work will be communicated to the general public through creation of immersive 360/Virtual Reality experiences, via a collaboration with the Texas A&M University Visualization LIVE Lab. Through Virtual Reality, users will experience firsthand what life and TEI data collection at sea entail. Virtual reality/digital games and 360° experiences will be distributed through GEOTRACES outreach websites, through PI engagement with local schools, libraries, STEM summer camps, and adult service organizations, and through a collaboration with the National Academy of Sciences.</p>
GP17-OCE
largerWorkCitation
project
eng; USA
oceans
Papeete, Tahiti to Punta Arenas, Chile
-152.000291
-75.097173
-67.009839
-19.894775
2022-12-03
2023-01-24
From projects that focused on the following 2 locations: 1. Subtropical South Pacific, Sub-Antarctic Pacific, and Southern Oceans 2. Papeete, Tahiti to Punta Arenas, Chile
0
BCO-DMO catalogue of parameters from Dissolved barium (Ba) concentrations in seawater samples collected on the US GEOTRACES GP17-OCE cruise on R/V Roger Revelle (RR2214) in the South Pacific and Southern Oceans from December 2022 to January 2023
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/947926.rdf
Name: Cruise_ID
Units: unitless
Description: <p>GEOTRACES cruise name</p>
http://lod.bco-dmo.org/id/dataset-parameter/947927.rdf
Name: Station_ID
Units: unitless
Description: <p>GEOTRACES station number</p>
http://lod.bco-dmo.org/id/dataset-parameter/947928.rdf
Name: Event_ID
Units: unitless
Description: <p>GEOTRACES event number</p>
http://lod.bco-dmo.org/id/dataset-parameter/947929.rdf
Name: GEOTRC_INSTR
Units: unitless
Description: <p>Sampling method</p>
http://lod.bco-dmo.org/id/dataset-parameter/947930.rdf
Name: Start_ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time (UTC) at start of sample collection in ISO 8601 format</p>
http://lod.bco-dmo.org/id/dataset-parameter/947931.rdf
Name: Start_Date_UTC
Units: unitless
Description: <p>Date (UTC) at start of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/947932.rdf
Name: Start_Time_UTC
Units: unitless
Description: <p>Time (UTC) at start of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/947933.rdf
Name: End_ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time (UTC) at end of sample collection in ISO 8601 format</p>
http://lod.bco-dmo.org/id/dataset-parameter/947934.rdf
Name: End_Date_UTC
Units: unitless
Description: <p>Date (UTC) at end of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/947935.rdf
Name: End_Time_UTC
Units: unitless
Description: <p>Time (UTC) at end of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/947936.rdf
Name: Start_Latitude
Units: decimal degrees
Description: <p>Sample collection start Latitude; negative values = South</p>
http://lod.bco-dmo.org/id/dataset-parameter/947937.rdf
Name: Start_Longitude
Units: decimal degrees
Description: <p>Sample collection start Longitude; negative values = West</p>
http://lod.bco-dmo.org/id/dataset-parameter/947938.rdf
Name: End_Latitude
Units: decimal degrees
Description: <p>Sample collection end Latitude; negative values = South</p>
http://lod.bco-dmo.org/id/dataset-parameter/947939.rdf
Name: End_Longitude
Units: decimal degrees
Description: <p>Sample collection end Longitude; negative values = West</p>
http://lod.bco-dmo.org/id/dataset-parameter/947940.rdf
Name: Rosette_Position
Units: unitless
Description: <p>Trace metal clean rosette position. 0 = no position</p>
http://lod.bco-dmo.org/id/dataset-parameter/947941.rdf
Name: Sample_ID
Units: unitless
Description: <p>GEOTRACES sample number</p>
http://lod.bco-dmo.org/id/dataset-parameter/947942.rdf
Name: Sample_Depth
Units: meters (m)
Description: <p>Depth of sample collection</p>
http://lod.bco-dmo.org/id/dataset-parameter/947943.rdf
Name: Ba_D_CONC_FISH_wtoyqq
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Dissolved Barium concentrations from tow FISH</p>
http://lod.bco-dmo.org/id/dataset-parameter/947944.rdf
Name: SD1_Ba_D_CONC_FISH_wtoyqq
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviaton of Ba_D_CONC_FISH_wtoyqq</p>
http://lod.bco-dmo.org/id/dataset-parameter/947945.rdf
Name: Flag_Ba_D_CONC_FISH_wtoyqq
Units: unitless
Description: <p>Data quality flag for Ba_D_CONC_FISH_wtoyqq</p>
http://lod.bco-dmo.org/id/dataset-parameter/947946.rdf
Name: Ba_D_CONC_UWAY_ththaj
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Dissolved Barium concentrations from ship's underway</p>
http://lod.bco-dmo.org/id/dataset-parameter/947947.rdf
Name: SD1_Ba_D_CONC_UWAY_ththaj
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviaton of Ba_D_CONC_UWAY_ththaj</p>
http://lod.bco-dmo.org/id/dataset-parameter/947948.rdf
Name: Flag_Ba_D_CONC_UWAY_ththaj
Units: unitless
Description: <p>Data quality flag for Ba_D_CONC_UWAY_ththaj</p>
http://lod.bco-dmo.org/id/dataset-parameter/947949.rdf
Name: Ba_D_CONC_BOTTLE_xhbqq4
Units: nanomoles per kilogram (nmol/kg)
Description: <p>Dissolved Barium concentrations from GoFLO bottles</p>
http://lod.bco-dmo.org/id/dataset-parameter/947950.rdf
Name: SD1_Ba_D_CONC_BOTTLE_xhbqq4
Units: nanomoles per kilogram (nmol/kg)
Description: <p>One standard deviaton of Ba_D_CONC_BOTTLE_xhbqq4</p>
http://lod.bco-dmo.org/id/dataset-parameter/947951.rdf
Name: Flag_Ba_D_CONC_BOTTLE_xhbqq4
Units: unitless
Description: <p>Data quality flag for Ba_D_CONC_BOTTLE_xhbqq4</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
125449
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/e7487be2-282c-45cf-9990-1dc464f752b6/content
download
https://doi.org/10.26008/1912/bco-dmo.947790.1
download
onLine
dataset
<p>Clean seawater samples were collected using a GEOTRACES CTD referred to as GT-C/12-liter GoFlo, and also from the Super-GeoFISH towed surface vehicle and from the ship's underway system for 1 sample where bad weather did not allow for the GeoFISH deployment. For more information, see the cruise report. Water samples were filtered through pre-cleaned, 0.2-micrometer (µm) Pall Acropak Supor filter capsules as described elsewhere (e.g., Cutter et al., 2014). Filtered water was collected in 125-milliliter (mL) HDPE bottles (Nalgene) that had been precleaned following the GEOTRACES protocol for trace-metal clean sampling.</p>
<p>Seawater samples were analyzed using a standard methodology for determining dissolved barium (Ba) concentrations in seawater samples. This process involves the use of barium-135 (135Ba) isotope dilution coupled with analysis via inductively coupled plasma mass spectrometry (ICP-MS) using a ThermoScientific iCAP Q operated in Kinetic Energy Dispersion (KED) mode. Solutions containing 100 microliters (μL) of seawater sample, 100 μL of a tellurium (Te) solution, which serves as a monitor for instrumental mass bias, and 100 μL of a 135Ba spike solution were analyzed, eluted to 2 mL with 2% HNO3. The enriched 135Ba isotope spike is BaCO3 obtained from Oak Ridge National Laboratories (batch no.142890) The ratios of barium isotopes, specifically the ratio of 135Ba/137Ba, are measured in the samples. The spike-to-sample ratio is then calculated using standard isotope dilution equations, and the resultant [Ba] in the sample (in nanomoles) was determined based on the quantity of spike added. Optimal spiking is achieved when spiked samples exhibit 135Ba/137Ba between 1.6 and 32.7 (Stracke et al., 2014), noting that our samples exhibited 135Ba/137Ba between 5.65 and 23.40. [Ba] was converted to nanomoles per kilogram (nmol/kg) based on the ocean's average density at the surface, 1.027 grams per cubic centimeter (g/cm3).</p>
Specified by the Principal Investigator(s)
<p><strong>Quality Flags:</strong><br />
Data were flagged using the SeaDataNet quality flag scheme. For more information on SeaDataNet flags, see: <a href="https://www.geotraces.org/geotraces-quality-flag-policy/" target="_blank">https://www.geotraces.org/geotraces-quality-flag-policy/</a> and <a href="https://www.seadatanet.org/Standards/Data-Quality-Control" target="_blank">https://www.seadatanet.org/Standards/Data-Quality-Control</a>.</p>
<p>Quality flag definitions:<br />
0 = No quality control;<br />
1 = Good value;<br />
2 = Probably good value;<br />
3 = Probably bad value;<br />
4 = Bad value;<br />
5 = Changed value;<br />
6 = Value below detection;<br />
7 = Value in excess;<br />
8 = Interpolated value;<br />
9 = Missing value.</p>
Specified by the Principal Investigator(s)
- Imported original file "IDP_BaOCE.csv" into the BCO-DMO system.
- Renamed fields to comply with BCO-DMO naming conventions.
- Converted all dates to format YYYY-MM-DD.
- Saved final file as "947790_v1_gp17-oce_dissolved_ba.csv".
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
Super-GeoFISH towed surface vehicle
Super-GeoFISH towed surface vehicle
PI Supplied Instrument Name: Super-GeoFISH towed surface vehicle Instrument Name: GeoFish Towed near-Surface Sampler Instrument Short Name:GeoFish Instrument Description: The GeoFish towed sampler is a custom designed near surface (2 meters or less) sampling system for the collection of trace metal clean seawater. It consists of a PVC encapsulated lead weighted torpedo and separate PVC depressor vane supporting the intake utilizing all PFA Teflon tubing connected to a deck mounted, air-driven, PFA Teflon dual-diaphragm pump which provides trace-metal clean seawater at up to 3.7L/min. The GeoFish is towed at up to 13kts off to the side of the vessel outside of the ship's wake to avoid possible contamination from the ship's hull. It was developed by Geoffrey Smith and Ken Bruland (University of California, Santa Cruz). Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/31/
12L GoFlo
12L GoFlo
PI Supplied Instrument Name: 12L GoFlo 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/
ThermoScientific iCAP Q
ThermoScientific iCAP Q
PI Supplied Instrument Name: ThermoScientific iCAP Q 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/
Cruise: RR2214
RR2214
R/V Roger Revelle
Community Standard Description
International Council for the Exploration of the Sea
R/V Roger Revelle
vessel
RR2214
Benjamin Twining
Bigelow Laboratory for Ocean Sciences
https://www.bodc.ac.uk/resources/inventories/cruise_inventory/reports/rogerrevelle_rr2214.pdf
Report describing RR2214
R/V Roger Revelle
Community Standard Description
International Council for the Exploration of the Sea
R/V Roger Revelle
vessel