http://lod.bco-dmo.org/id/dataset/788315
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
2020-01-24
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Dissolved REE concentrations and Nd isotopes from the US GEOTRACES Arctic USCGC Healy cruise HLY1502 from August to September 2015
2020-01-24
publication
2020-01-24
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2020-02-11
publication
https://doi.org/10.1575/1912/bco-dmo.788315.1
Brian Haley
Oregon State University
principalInvestigator
Steven L. Goldstein
Lamont-Doherty Earth Observatory
principalInvestigator
Howard Scher
University of South Carolina
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: Haley, B., Goldstein, S. L., Scher, H. (2020) Dissolved REE concentrations and Nd isotopes from the US GEOTRACES Arctic USCGC Healy cruise HLY1502 from August to September 2015. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2020-01-24 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.788315.1 [access date]
Dissolved REE concentrations and Nd isotopes in the Western Arctic Ocean from OSU Dataset Description: <p>This dataset contains data from samples&nbsp;analyzed at Oregon State University (OSU). Additional dissolved REE data are reported by Lamont-Doherty Earth Observatory (LDEO) in a <a href="https://www.bco-dmo.org/dataset/835533" target="_blank">separate dataset</a> (see 'Related Datasets').</p> Methods and Sampling: <p>Samples were filtered, acidified, and split at sea.&nbsp;Samples were collected by Niskin bottle. Refer to the&nbsp;cruise report for more information on cruise operations (<a href="http://dmoserv3.whoi.edu/data_docs/GEOTRACES/Arctic/ARC01-report.pdf" target="_blank">http://dmoserv3.whoi.edu/data_docs/GEOTRACES/Arctic/ARC01-report.pdf</a>).&nbsp;</p>
<p>For REE concentrations we removed an aliquot before pH-adjustment of each sample. Sample methodology is modified from the Lab #3 methods in Behrens et al. (2006) using a technique pioneered by Tachikawa et al. (1999). Samples were spiked with a mixed 142Ce, 148Nd, and 176Yb enriched isotope spike blend, and 10 ml of this spiked sample was preconcentrated offline using a SeaFast PICO system (ESI). Resulting solutions were analysed at Oregon State University (Corvallis, OR) using a Thermo X-Series II ICP-MS.</p>
<p>We prepared our 5L split for neodymium isotopic analysis following Shabani et al. (1992). Samples were pH-adjusted to pH ~3.5, then pumped through 300 µl of HDEHP in a C18 cartridge to capture REEs. Rare earth elements were eluted from the cartridge using 6M HCl, then Nd was isolated using sequential chromatographic columns: AG50-X8 (BioRad) and Ln-Spec (Eichrom). Neodymium isotopic measurements were made at Oregon State University using a Nu Plasma 3 multicollector ICP-MS (Nu Instruments).</p>
<p>Problem report: Gaps in Nd isotope data are due to errors made during column chromatography. Where the 2-sigma error of epsilon-Nd is ≥0.7, data is flagged with QV:IODE code 3, questionable/suspect quality.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1459513 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1459513
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1458936 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1458936
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1459716 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1459716
completed
Brian Haley
Oregon State University
541-737-2649
Oregon State University 104 COAS Admin. Bldg.,
Corvallis
OR
97331-5503
USA
brian.haley@oregonstate.edu
pointOfContact
Steven L. Goldstein
Lamont-Doherty Earth Observatory
845-365-8787
Department of Earth and Environmental Sciences 61 Rte 9W
Palisades
NY
10964
USA
steveg@ldeo.columbia.edu
pointOfContact
Howard Scher
University of South Carolina
803-777-2410
Earth and Ocean Sciences 701 Sumter Street; EWS 617
Columbia
SC
29208
USA
hscher@geol.sc.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Cruise
STNNBR
GEOTRC_SAMPNO
CTDDEPTH
DATE
TIME
LATITUDE
LONGITUDE
La_D_CONC_BOTTLE
La_D_CONC_BOTTLE_QV_IODE
Ce_D_CONC_BOTTLE
Ce_D_CONC_BOTTLE_QV_IODE
Pr_D_CONC_BOTTLE
Pr_D_CONC_BOTTLE_QV_IODE
Nd_D_CONC_BOTTLE
Nd_D_CONC_BOTTLE_QV_IODE
Sm_D_CONC_BOTTLE
Sm_D_CONC_BOTTLE_QV_IODE
Eu_D_CONC_BOTTLE
Eu_D_CONC_BOTTLE_QV_IODE
Gd_D_CONC_BOTTLE
Gd_D_CONC_BOTTLE_QV_IODE
Tb_D_CONC_BOTTLE
Tb_D_CONC_BOTTLE_QV_IODE
Dy_D_CONC_BOTTLE
Dy_D_CONC_BOTTLE_QV_IODE
Ho_D_CONC_BOTTLE
Ho_D_CONC_BOTTLE_QV_IODE
Er_D_CONC_BOTTLE
Er_D_CONC_BOTTLE_QV_IODE
Tm_D_CONC_BOTTLE
Tm_D_CONC_BOTTLE_QV_IODE
Yb_D_CONC_BOTTLE
Yb_D_CONC_BOTTLE_QV_IODE
Lu_D_CONC_BOTTLE
Lu_D_CONC_BOTTLE_QV_IODE
Nd_143_144_D_EPSILON_BOTTLE
Nd_143_144_D_EPSILON_BOTTLE_SD
Nd_143_144_D_EPSILON_BOTTLE_QV_IODE
ISO_DateTime_UTC
Nu Plasma 3 multi-collector ICP-MS
Thermo X-Series II ICP-MS
theme
None, User defined
Cruise identfier
station
sample identification
depth
date
time of day
latitude
longitude
trace element concentration
quality flag
Nd143_144
ISO_DateTime_UTC
featureType
BCO-DMO Standard Parameters
Inductively Coupled Plasma Mass Spectrometer
Inductively Coupled Plasma Mass Spectrometer
Niskin bottle
instrument
BCO-DMO Standard Instruments
HLY1502
service
Deployment Activity
Western Arctic Ocean
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
U.S. Arctic GEOTRACES Study (GN01)
https://www.geotraces.org/
U.S. Arctic GEOTRACES Study (GN01)
<p><em>Description from NSF award abstract:</em><br />
In pursuit of its goal "to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions", in 2015 the International GEOTRACES Program will embark on several years of research in the Arctic Ocean. In a region where climate warming and general environmental change are occurring at amazing speed, research such as this is important for understanding the current state of Arctic Ocean geochemistry and for developing predictive capability as the regional ecosystem continues to warm and influence global oceanic and climatic conditions. The three investigators funded on this award, will manage a large team of U.S.scientists who will compete through the regular NSF proposal process to contribute their own unique expertise in marine trace metal, isotopic, and carbon cycle geochemistry to the U.S. effort. The three managers will be responsible for arranging and overseeing at-sea technical services such as hydrographic measurements, nutrient analyses, and around-the-clock management of on-deck sampling activites upon which all participants depend, and for organizing all pre- and post-cruise technical support and scientific meetings. The management team will also lead educational outreach activities for the general public in Nome and Barrow, Alaska, to explain the significance of the study to these communities and to learn from residents' insights on observed changes in the marine system. The project itself will provide for the support and training of a number of pre-doctoral students and post-doctoral researchers. Inasmuch as the Arctic Ocean is an epicenter of global climate change, findings of this study are expected to advance present capability to forecast changes in regional and globlal ecosystem and climate system functioning.</p>
<p>As the United States' contribution to the International GEOTRACES Arctic Ocean initiative, this project will be part of an ongoing multi-national effort to further scientific knowledge about trace elements and isotopes in the world ocean. This U.S. expedition will focus on the western Arctic Ocean in the boreal summer of 2015. The scientific team will consist of the management team funded through this award plus a team of scientists from U.S. academic institutions who will have successfully competed for and received NSF funds for specific science projects in time to participate in the final stages of cruise planning. The cruise track segments will include the Bering Strait, Chukchi shelf, and the deep Canada Basin. Several stations will be designated as so-called super stations for intense study of atmospheric aerosols, sea ice, and sediment chemistry as well as water-column processes. In total, the set of coordinated international expeditions will involve the deployment of ice-capable research ships from 6 nations (US, Canada, Germany, Sweden, UK, and Russia) across different parts of the Arctic Ocean, and application of state-of-the-art methods to unravel the complex dynamics of trace metals and isotopes that are important as oceanographic and biogeochemical tracers in the sea.</p>
U.S. GEOTRACES Arctic
largerWorkCitation
project
Collaborative Research: GEOTRACES Arctic Section: Nd isotopes and REEs in the Arctic
http://www.geotraces.org/
Collaborative Research: GEOTRACES Arctic Section: Nd isotopes and REEs in the Arctic
<p><em>NSF Award Abstract</em>:<br />
In this project, investigators participating in the 2015 U.S. GEOTRACES Arctic expedition will measure neodymium isotopes and rare earth elements in seawater, sediment, and particulates collected from the western Arctic Ocean. In common with other national initiatives in the International GEOTRACES Program, the goals of the U.S. Arctic expedition are to identify processes and quantify fluxes that control the distributions of key trace elements and isotopes in the ocean, and to establish the sensitivity of these distributions to changing environmental conditions. Some trace elements are essential to life, others are known biological toxins, and still others are important because they can be used as tracers of a variety of physical, chemical, and biological processes in the sea. Neodymium and rare earth elements are oceanographic tracers, and data from this research will provide benchmarks for other trace element and isotope studies to better understand their cycles and how future environmental changes will impact this important ocean basin. The project will support the training of undergraduate, graduate, and post-doctoral researchers, and results will be disseminated via public outreach activities.</p>
<p>Neodymium (Nd) isotopes are tracers of water mass sources, transport and mixing, and rare earth elements (REEs) show systematic fractionations during environmental processes. Together they provide a powerful tool for analyzing provenances and processes in the oceans that reflect the changing environmental controls on the distribution of trace elements and their isotopes (TEIs). Inherent logistical difficulties make the Arctic Ocean especially scarce in TEI data (including Nd isotopes and REE concentrations), which hinders understanding and application of these tracers. In this study, researchers will examine Nd and REE concentrations in seawater, sediment, and particulate samples collected in the western Arctic Ocean, with the aim of (1) assessing Arctic circulation and water mass mixing in light of Nd isotopes and REEs; (2) attempting to quantify particle-dissolved exchanges of TEIs and; (3) using Nd isotopes and REEs to characterize the sources, sinks and exchanges of TEIs. It is expected that through improved understanding of the Nd isotope and REEs tracers, scientists will be able to relate these findings to other TEIs and to the broader understanding of Arctic oceanographic change in the past, present, and future.</p>
Arctic GEOTRACES Nd/eNd
largerWorkCitation
project
eng; USA
oceans
Western Arctic Ocean
-179.8086
179.1997
79.9835
87.8259
2015-08-23
2015-09-16
From projects that focused on the following 2 locations: 1. Arctic Ocean; Sailing from Dutch Harbor to Dutch Harbor (GN01) 2. Arctic Ocean
0
BCO-DMO catalogue of parameters from Dissolved REE concentrations and Nd isotopes from the US GEOTRACES Arctic USCGC Healy cruise HLY1502 from August to September 2015
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/788419.rdf
Name: Cruise
Units: unitless
Description: <p>Cruise identification (GN01; HLY1502)</p>
http://lod.bco-dmo.org/id/dataset-parameter/788420.rdf
Name: STNNBR
Units: unitless
Description: <p>Station number</p>
http://lod.bco-dmo.org/id/dataset-parameter/788421.rdf
Name: GEOTRC_SAMPNO
Units: unitless
Description: <p>Unique GEOTRACES sample number</p>
http://lod.bco-dmo.org/id/dataset-parameter/788422.rdf
Name: CTDDEPTH
Units: meters (m)
Description: <p>Sample depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/788423.rdf
Name: DATE
Units: unitless
Description: <p>Date; format: yyyymmdd</p>
http://lod.bco-dmo.org/id/dataset-parameter/788424.rdf
Name: TIME
Units: unitless
Description: <p>Time (UTC); format: HHMM</p>
http://lod.bco-dmo.org/id/dataset-parameter/788425.rdf
Name: LATITUDE
Units: degrees North
Description: <p>Latitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/788426.rdf
Name: LONGITUDE
Units: degrees East
Description: <p>Longitude; negative = West</p>
http://lod.bco-dmo.org/id/dataset-parameter/788427.rdf
Name: La_D_CONC_BOTTLE
Units: picomoles per kilogram (pmol/kg)
Description: <p>Dissolved Concentration of Lanthanum (La) from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788428.rdf
Name: La_D_CONC_BOTTLE_QV_IODE
Units: unitless
Description: <p>La_D_CONC_BOTTLE data quality flag using IODE scheme</p>
http://lod.bco-dmo.org/id/dataset-parameter/788429.rdf
Name: Ce_D_CONC_BOTTLE
Units: pmol/kg
Description: <p>Dissolved Concentration of Cerium (Ce) from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788430.rdf
Name: Ce_D_CONC_BOTTLE_QV_IODE
Units: unitless
Description: <p>Ce_D_CONC_BOTTLE data quality flag using IODE scheme</p>
http://lod.bco-dmo.org/id/dataset-parameter/788431.rdf
Name: Pr_D_CONC_BOTTLE
Units: pmol/kg
Description: <p>Dissolved Concentration of Praseodymium (Pr) from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788432.rdf
Name: Pr_D_CONC_BOTTLE_QV_IODE
Units: unitless
Description: <p>Pr_D_CONC_BOTTLE data quality flag using IODE scheme</p>
http://lod.bco-dmo.org/id/dataset-parameter/788433.rdf
Name: Nd_D_CONC_BOTTLE
Units: pmol/kg
Description: <p>Dissolved Concentration of Neodymium (Nd) from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788434.rdf
Name: Nd_D_CONC_BOTTLE_QV_IODE
Units: unitless
Description: <p>Nd_D_CONC_BOTTLE data quality flag using IODE scheme</p>
http://lod.bco-dmo.org/id/dataset-parameter/788435.rdf
Name: Sm_D_CONC_BOTTLE
Units: pmol/kg
Description: <p>Dissolved Concentration of Samarium (Sm) from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788436.rdf
Name: Sm_D_CONC_BOTTLE_QV_IODE
Units: unitless
Description: <p>Sm_D_CONC_BOTTLE data quality flag using IODE scheme</p>
http://lod.bco-dmo.org/id/dataset-parameter/788437.rdf
Name: Eu_D_CONC_BOTTLE
Units: pmol/kg
Description: <p>Dissolved Concentration of Europium (Eu) from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788438.rdf
Name: Eu_D_CONC_BOTTLE_QV_IODE
Units: unitless
Description: <p>Eu_D_CONC_BOTTLE data quality flag using IODE scheme</p>
http://lod.bco-dmo.org/id/dataset-parameter/788439.rdf
Name: Gd_D_CONC_BOTTLE
Units: pmol/kg
Description: <p>Dissolved Concentration of Gadolinium (Gd) from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788440.rdf
Name: Gd_D_CONC_BOTTLE_QV_IODE
Units: unitless
Description: <p>Gd_D_CONC_BOTTLE data quality flag using IODE scheme</p>
http://lod.bco-dmo.org/id/dataset-parameter/788441.rdf
Name: Tb_D_CONC_BOTTLE
Units: pmol/kg
Description: <p>Dissolved Concentration of Terbium (Tb) from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788442.rdf
Name: Tb_D_CONC_BOTTLE_QV_IODE
Units: unitless
Description: <p>Tb_D_CONC_BOTTLE data quality flag using IODE scheme</p>
http://lod.bco-dmo.org/id/dataset-parameter/788443.rdf
Name: Dy_D_CONC_BOTTLE
Units: pmol/kg
Description: <p>Dissolved Concentration of Dysprosium (Dy) from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788444.rdf
Name: Dy_D_CONC_BOTTLE_QV_IODE
Units: unitless
Description: <p>Dy_D_CONC_BOTTLE data quality flag using IODE scheme</p>
http://lod.bco-dmo.org/id/dataset-parameter/788445.rdf
Name: Ho_D_CONC_BOTTLE
Units: pmol/kg
Description: <p>Dissolved Concentration of Holmium (Ho) from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788446.rdf
Name: Ho_D_CONC_BOTTLE_QV_IODE
Units: unitless
Description: <p>Ho_D_CONC_BOTTLE data quality flag using IODE scheme</p>
http://lod.bco-dmo.org/id/dataset-parameter/788447.rdf
Name: Er_D_CONC_BOTTLE
Units: pmol/kg
Description: <p>Dissolved Concentration of Erbium (Er) from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788448.rdf
Name: Er_D_CONC_BOTTLE_QV_IODE
Units: unitless
Description: <p>Er_D_CONC_BOTTLE data quality flag using IODE scheme</p>
http://lod.bco-dmo.org/id/dataset-parameter/788449.rdf
Name: Tm_D_CONC_BOTTLE
Units: pmol/kg
Description: <p>Dissolved Concentration of Thulium ( Tm) from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788450.rdf
Name: Tm_D_CONC_BOTTLE_QV_IODE
Units: unitless
Description: <p>Tm_D_CONC_BOTTLE data quality flag using IODE scheme</p>
http://lod.bco-dmo.org/id/dataset-parameter/788451.rdf
Name: Yb_D_CONC_BOTTLE
Units: pmol/kg
Description: <p>Dissolved Concentration of Ytterbium (Yb) from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788452.rdf
Name: Yb_D_CONC_BOTTLE_QV_IODE
Units: unitless
Description: <p>Yb_D_CONC_BOTTLE data quality flag using IODE scheme</p>
http://lod.bco-dmo.org/id/dataset-parameter/788453.rdf
Name: Lu_D_CONC_BOTTLE
Units: pmol/kg
Description: <p>Dissolved Concentration of Lutetium (Lu) from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788454.rdf
Name: Lu_D_CONC_BOTTLE_QV_IODE
Units: unitless
Description: <p>Lu_D_CONC_BOTTLE data quality flag using IODE scheme</p>
http://lod.bco-dmo.org/id/dataset-parameter/788455.rdf
Name: Nd_143_144_D_EPSILON_BOTTLE
Units: epsilon units
Description: <p>Isotopic ratio of neodymium 143/144 from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788456.rdf
Name: Nd_143_144_D_EPSILON_BOTTLE_SD
Units: epsilon units
Description: <p>1-sigma error of Epsilon Nd from bottle samples</p>
http://lod.bco-dmo.org/id/dataset-parameter/788457.rdf
Name: Nd_143_144_D_EPSILON_BOTTLE_QV_IODE
Units: unitless
Description: <p>Nd_143_144_D_EPSILON_BOTTLE data quality flag using IODE scheme</p>
http://lod.bco-dmo.org/id/dataset-parameter/788458.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time (UTC) formatted to ISO8601 standard: yyyy-mm-ddTHH:MM</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
22033
https://darchive.mblwhoilibrary.org/bitstream/1912/25369/1/dataset-788315_gn01-dissolved-rees__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.788315.1
download
onLine
dataset
<p>Samples were filtered, acidified, and split at sea.&nbsp;Samples were collected by Niskin bottle. Refer to the&nbsp;cruise report for more information on cruise operations (<a href="http://dmoserv3.whoi.edu/data_docs/GEOTRACES/Arctic/ARC01-report.pdf" target="_blank">http://dmoserv3.whoi.edu/data_docs/GEOTRACES/Arctic/ARC01-report.pdf</a>).&nbsp;</p>
<p>For REE concentrations we removed an aliquot before pH-adjustment of each sample. Sample methodology is modified from the Lab #3 methods in Behrens et al. (2006) using a technique pioneered by Tachikawa et al. (1999). Samples were spiked with a mixed 142Ce, 148Nd, and 176Yb enriched isotope spike blend, and 10 ml of this spiked sample was preconcentrated offline using a SeaFast PICO system (ESI). Resulting solutions were analysed at Oregon State University (Corvallis, OR) using a Thermo X-Series II ICP-MS.</p>
<p>We prepared our 5L split for neodymium isotopic analysis following Shabani et al. (1992). Samples were pH-adjusted to pH ~3.5, then pumped through 300 µl of HDEHP in a C18 cartridge to capture REEs. Rare earth elements were eluted from the cartridge using 6M HCl, then Nd was isolated using sequential chromatographic columns: AG50-X8 (BioRad) and Ln-Spec (Eichrom). Neodymium isotopic measurements were made at Oregon State University using a Nu Plasma 3 multicollector ICP-MS (Nu Instruments).</p>
<p>Problem report: Gaps in Nd isotope data are due to errors made during column chromatography. Where the 2-sigma error of epsilon-Nd is ≥0.7, data is flagged with QV:IODE code 3, questionable/suspect quality.</p>
Specified by the Principal Investigator(s)
<p>Neodymium isotope ratios were corrected using JNdi-1 standard for reference (Tanaka et al., 2000). Dissolved concentrations were determined by a combination of isotope dilution and external calibration following methods developed by Tachikawa et al. (1999) and used by Lacan and Jeandel (2001) and Jeandel et al. (2013). Calibration standards were diluted and spiked with a mixed 142Ce, 148Nd, and 176Yb enriched isotope spike blend and were pre-concentrated using the same method as the samples. For Ce the concentration was determined by isotope dilution using 142Ce. For the other REEs we determined the concentrations of Nd and Yb in the samples both by isotope dilution and by external calibration, then used these two results to generate a ratio (spiked value / external calibration value) that we applied to the other REEs. Precision was determined by repeated measurements of two in-house seawater samples, one from Bransfeld Strait (~1100m depth) and one from nearshore California (~surface depth). Reported values here of Ce, Nd, and Yb are calculated by isotope dilution, and for other REEs by external calibration modified by the ratio described above.</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
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Woods Hole
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02543
USA
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Nu Plasma 3 multi-collector ICP-MS
Nu Plasma 3 multi-collector ICP-MS
PI Supplied Instrument Name: Nu Plasma 3 multi-collector ICP-MS PI Supplied Instrument Description:Neodymium isotopic measurements were made at Oregon State University using a Nu Plasma 3 multi-collector ICP-MS. 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/
Thermo X-Series II ICP-MS
Thermo X-Series II ICP-MS
PI Supplied Instrument Name: Thermo X-Series II ICP-MS PI Supplied Instrument Description:Rare earth element dissolved concentrations were analysed at Oregon State University using a Thermo X-Series II ICP-MS. 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/
PI Supplied Instrument Name: Instrument Name: Niskin bottle Instrument Short Name:Niskin bottle Instrument Description: A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/
Cruise: HLY1502
HLY1502
USCGC Healy
Community Standard Description
International Council for the Exploration of the Sea
USCGC Healy
vessel
HLY1502
David C. Kadko
Florida International University
https://datadocs.bco-dmo.org/docs/302/geotraces/GEOTRACES_ARCTIC/data_docs/cruise_reports/healy1502.pdf
Report describing HLY1502
USCGC Healy
Community Standard Description
International Council for the Exploration of the Sea
USCGC Healy
vessel