http://lod.bco-dmo.org/id/dataset/672203
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
2017-01-03
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Depth profiles of seawater dissolved 143Nd/144Nd from RRS James Cook JC-57 in the southwest Atlantic, Punta Arenas (Chile) to Las Palmas (Spain), March 2011 (GEOTRACES-SWAT project)
2017-01-06
publication
2017-01-06
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2022-08-01
publication
https://doi.org/10.26008/1912/bco-dmo.672203.1
Steven L. Goldstein
Lamont-Doherty Earth Observatory
principalInvestigator
Leopoldo D. Pena
University of Barcelona
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: Wu, Y., Pena Gonzalez, L. D., Bolge, L. L., Goldstein, S. L. (2022) Depth profiles of seawater dissolved 143Nd/144Nd from RRS James Cook JC-57 in the southwest Atlantic, Punta Arenas (Chile) to Las Palmas (Spain), March 2011 (GEOTRACES-SWAT project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2017-01-06 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.672203.1 [access date]
Depth profiles of seawater dissolved 143Nd/144Nd Dataset Description: Methods and Sampling: <p>Seawater samples were collected in the GEOTRACES GA02 Cruise Leg 3 from Punta Arenas (Chile) to Las Palmas (Spain), March-April 2011. 5-10 L of seawater were collected depending on the sample depth and stored in a cubitainer for each sample. The samples were filtered using 0.2 μm Sartobran cartridges and acidified using ultrapure Seastar hydrochloric acid (HCl) to pH ~ 2 shortly after sampling.</p>
<p>We preconcentrated rare earth elements from seawater using C18 cartridges (Waters Corp., Sep-Pak classic C18 cartridge 360 mg 55-105 μm) loaded with complexing agent of 2-ethylhexyl hydrogen phosphate (HDEHP) and 2-ethylhexyl dihydrogen phosphate (H2MEHP), which was first proposed by Shabani et al. (1992). In this study, we followed the method by Jeandel et al. (1998), Lacan and Jeandel (2004), Pahnke et al. (2012). Specifically, C18 cartridges were first cleaned in a 0.5N HCl bath overnight, then 10 mL of 6N HCl were introduced through the cartridge, and then they were flushed with &gt; 500 mL of Milli-Q water. Cartridges were in a neutral environment (MilliQ® water) after cleaning. For each 5 L sample, 300 μL of complexing agent HDEHP/H2MEHP was loaded on a clean cartridge. Seawater samples were adjusted to pH ~ 3.5 by adding Optima® ammonium hydroxide. The seawater samples were pumped through the cartridges at 20mL/min by a peristaltic pump. Afterward, the cartridges were eluted with 10 mL of 0.01N HCl to remove barium. After barium elution, the cartridges were eluted with 35 mL of 6N hydrochloric acid at 10 mL/min by the peristaltic pump to collect the REEs. The REEs were dried and further purified by Eichrom RE-spec column chemistry. Nd fractions were extracted from REEs by LN-spec column chemistry.</p>
<p>The Nd isotopic ratios were measured on MC-ICP-MS (a ThermoScientific Neptune-Plus®) at Lamont-Doherty Earth Observatory of Columbia University. Nd fractions from column chemistry were dried by evaporation and dissolved in 600-800 μL of 3% nitric acid (HNO3). The international Nd standard JNdi-1 was analyzed between every sample and the average of the standards is reported relative to the recommended value of 143Nd/144Nd = 0.512115 (Tanaka, 2000). For different concentrations of JNdi-1, the measured 143Nd/144Nd isotopic ratios were 0.512079 ± 0.000014 (2σ, n = 126) for 20ppb solutions, 0.512079 ± 0.000013 (2σ, n = 190) for 15 ppb solutions, and 0.512058 ± 0.000022 (2σ, n = 37) for 10ppb solutions. Nd isotopic ratios were normalized to 146Nd/144Nd = 0.7219 for mass fractionation.</p>
<p>We are awaiting the results of Nd isotopic ratios at the crossover station (~40°S and ~42°W) from University of Cambridge.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1260514 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1260514
completed
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
Leopoldo D. Pena
University of Barcelona
+34 934021382
GRC Geociències Marines Department of Earth and Ocean Dynamics
Barcelona
08028
Spain
lpena@ub.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
cruise_id
cruise_name
station
cast
cast_type
instrument
bottle
BODC_Bottle
depth_CTD
depth_GEOTRC_CTD_round
BTL_ISO_DateTime_UTC
lat_sta
lon_sta
press_CTD
temp_CTD
sal_CTD
O2_CTD
Phosphate
Silicate
Nitrate
Nd_143_144_D_Ratio
Nd_143_144_D_Ratio_Flag
Nd_143_144_D_Ratio_Int_2SE
Nd_143_144_D_Ratio_Ext_2SD
Nd_D_Epsilon
Nd_D_Epsilon_Flag
Nd_D_Epsilon_Int_2SE
Nd_D_Epsilon_Ext_2SD
MC-ICP-MS (ThermoScientific Neptune-Plus)
theme
None, User defined
Cruise identfier
cruise name
station number
cast
cast type
instrument
bottle
depth
ISO_DateTime_UTC
latitude
longitude
water pressure
water temperature at measurement depth
salinity from CTD
dissolved Oxygen
reactive phosphorus (PO4)
Silicate, Si(OH)4, silicic acid
Nitrate
Nd143_144
flag
standard error
standard deviation
featureType
BCO-DMO Standard Parameters
CTD - profiler
Inductively Coupled Plasma Mass Spectrometer
Niskin bottle
instrument
BCO-DMO Standard Instruments
JC057
service
Deployment Activity
Southwest Atlantic, Punta Arenas, Chile to Las Palmas, Spain
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
A Critical Test of the Nd Paleocirculation Proxy (GA02)
https://osprey.bco-dmo.org/project/672207
A Critical Test of the Nd Paleocirculation Proxy (GA02)
<p><em>Extracted from the NSF award abstract:</em></p>
<p>Neodymium (Nd) isotopes are increasingly used in paleoceanographic studies as "quasi-conservative" water mass tracers. However, the limitations of this proxy are not yet fully understood. The proposed work aims to address this uncertainty by critically evaluating the behavior of Nd isotopes as tracers of water mass mixing. The project, led by researchers at Columbia University's Lamont-Doherty Earth Observatory, will analyze in-hand seawater and surface sediment samples collected along a meridional transect in the southwest Atlantic (0 to 50 degrees S) during a GEOTRACES cruise. The sample suite will be used to test 1) whether Nd isotope ratios deviate from expected values for mixing along circulation transport paths, 2) whether Nd isotopes behave quasi-conservatively away from continental margins, 3) whether seafloor features (e.g., continental shelf, volcanic seamounts) add significant external Nd to the system, and 4) whether the Southern Hemisphere wind zones impact Nd isotope values through aeolian deposition. The relationship between Nd isotopes in authigenic surface sediments and those in the overlying seawater will be calibrated for the first time.</p>
<p>By testing an emerging tool in the study of past ocean dynamics, this research will enable a more accurate understanding of changes in the ocean-climate system. The project will support an early-career researcher and a graduate student. Undergraduate students will be involved through an NSF-supported summer internship program at LDEO.</p>
Nd Paleocirculation Proxy
largerWorkCitation
project
eng; USA
oceans
Southwest Atlantic, Punta Arenas, Chile to Las Palmas, Spain
-52.68811
-28
-49.5472
-0.18715
2011-03-05
2011-03-27
SW Atlantic Ocean
0
BCO-DMO catalogue of parameters from Depth profiles of seawater dissolved 143Nd/144Nd from RRS James Cook JC-57 in the southwest Atlantic, Punta Arenas (Chile) to Las Palmas (Spain), March 2011 (GEOTRACES-SWAT 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
http://lod.bco-dmo.org/id/dataset-parameter/672228.rdf
Name: cruise_id
Units: unitless
Description: <p>Cruise name</p>
http://lod.bco-dmo.org/id/dataset-parameter/672229.rdf
Name: cruise_name
Units: unitless
Description: <p>Cruise section</p>
http://lod.bco-dmo.org/id/dataset-parameter/672230.rdf
Name: station
Units: unitless
Description: <p>Station number</p>
http://lod.bco-dmo.org/id/dataset-parameter/672231.rdf
Name: cast
Units: unitless
Description: <p>Cast number</p>
http://lod.bco-dmo.org/id/dataset-parameter/672232.rdf
Name: cast_type
Units: unitless
Description: <p>Cast type</p>
http://lod.bco-dmo.org/id/dataset-parameter/672233.rdf
Name: instrument
Units: unitless
Description: <p>Sampling Device</p>
http://lod.bco-dmo.org/id/dataset-parameter/672234.rdf
Name: bottle
Units: unitless
Description: <p>Bottle number</p>
http://lod.bco-dmo.org/id/dataset-parameter/672235.rdf
Name: BODC_Bottle
Units: unitless
Description: <p>British Oceanographic Data Center Bottle Number</p>
http://lod.bco-dmo.org/id/dataset-parameter/672236.rdf
Name: depth_CTD
Units: meters
Description: <p>Sampling depth of CTD</p>
http://lod.bco-dmo.org/id/dataset-parameter/672237.rdf
Name: depth_GEOTRC_CTD_round
Units: meters
Description: <p>Sampling depth rounded to nearest meter</p>
http://lod.bco-dmo.org/id/dataset-parameter/672238.rdf
Name: BTL_ISO_DateTime_UTC
Units: unitless
Description: <p>UTC date and time of collection formatted as yyyy-mm--ddTHH:MM:SSZ</p>
http://lod.bco-dmo.org/id/dataset-parameter/672239.rdf
Name: lat_sta
Units: degrees north
Description: <p>Latitude; north is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/672240.rdf
Name: lon_sta
Units: degrees east
Description: <p>Longitude; east is positive</p>
http://lod.bco-dmo.org/id/dataset-parameter/672241.rdf
Name: press_CTD
Units: dbar
Description: <p>Sampling pressure of CTD</p>
http://lod.bco-dmo.org/id/dataset-parameter/672242.rdf
Name: temp_CTD
Units: degrees Celsius
Description: <p>Sampling temperature of CTD</p>
http://lod.bco-dmo.org/id/dataset-parameter/672243.rdf
Name: sal_CTD
Units: PSU
Description: <p>Sampling salinity of CTD</p>
http://lod.bco-dmo.org/id/dataset-parameter/672244.rdf
Name: O2_CTD
Units: micromole/kilogram (umol/kg)
Description: <p>Sampling oxygen concentration of CTD</p>
http://lod.bco-dmo.org/id/dataset-parameter/672245.rdf
Name: Phosphate
Units: micromole/kilogram (umol/kg)
Description: <p>Phosphate concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/672246.rdf
Name: Silicate
Units: micromole/kilogram (umol/kg)
Description: <p>Silicate concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/672247.rdf
Name: Nitrate
Units: micromole/kilogram (umol/kg)
Description: <p>Nitrate concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/672248.rdf
Name: Nd_143_144_D_Ratio
Units: dimensionless
Description: <p>143Nd/144Nd isotopic ratio</p>
http://lod.bco-dmo.org/id/dataset-parameter/672249.rdf
Name: Nd_143_144_D_Ratio_Flag
Units: unitless
Description: <p>Quality flag: Flag 1: data evaluated as Good; Flag 2: data quality not evaluated or unknown; Flag 3: data quality assessed to be questionable; Flag 4: data quality assessed to be Bad; Flag 9: no data</p>
http://lod.bco-dmo.org/id/dataset-parameter/672250.rdf
Name: Nd_143_144_D_Ratio_Int_2SE
Units: dimensionless
Description: <p>Internal 2 standard errors of each sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/672251.rdf
Name: Nd_143_144_D_Ratio_Ext_2SD
Units: dimensionless
Description: <p>External 2 standard deviations of repeatedly measured JNdi standards during the analysis</p>
http://lod.bco-dmo.org/id/dataset-parameter/672252.rdf
Name: Nd_D_Epsilon
Units: dimensionless
Description: <p>Final 143Nd/144Nd normalized to 0.512638 in parts per 10000</p>
http://lod.bco-dmo.org/id/dataset-parameter/672253.rdf
Name: Nd_D_Epsilon_Flag
Units: unitless
Description: <p>Quality flag: Flag 1: data evaluated as Good; Flag 2: data quality not evaluated or unknown; Flag 3: data quality assessed to be questionable; Flag 4: data quality assessed to be Bad; Flag 9: no data</p>
http://lod.bco-dmo.org/id/dataset-parameter/672254.rdf
Name: Nd_D_Epsilon_Int_2SE
Units: dimensionless
Description: <p>Internal 2 standard errors of each sample normalized to 0.512638 in parts per 10000</p>
http://lod.bco-dmo.org/id/dataset-parameter/672255.rdf
Name: Nd_D_Epsilon_Ext_2SD
Units: dimensionless
Description: <p>External 2 standard deviations of repeatedly measured JNdi standards during the analysis normalized to 0.512638 in parts per 10000</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
128310
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/5d3aaeb7-0bd7-5f9a-9223-1635efca6924/content
download
https://doi.org/10.26008/1912/bco-dmo.672203.1
download
onLine
dataset
<p>Seawater samples were collected in the GEOTRACES GA02 Cruise Leg 3 from Punta Arenas (Chile) to Las Palmas (Spain), March-April 2011. 5-10 L of seawater were collected depending on the sample depth and stored in a cubitainer for each sample. The samples were filtered using 0.2 μm Sartobran cartridges and acidified using ultrapure Seastar hydrochloric acid (HCl) to pH ~ 2 shortly after sampling.</p>
<p>We preconcentrated rare earth elements from seawater using C18 cartridges (Waters Corp., Sep-Pak classic C18 cartridge 360 mg 55-105 μm) loaded with complexing agent of 2-ethylhexyl hydrogen phosphate (HDEHP) and 2-ethylhexyl dihydrogen phosphate (H2MEHP), which was first proposed by Shabani et al. (1992). In this study, we followed the method by Jeandel et al. (1998), Lacan and Jeandel (2004), Pahnke et al. (2012). Specifically, C18 cartridges were first cleaned in a 0.5N HCl bath overnight, then 10 mL of 6N HCl were introduced through the cartridge, and then they were flushed with &gt; 500 mL of Milli-Q water. Cartridges were in a neutral environment (MilliQ® water) after cleaning. For each 5 L sample, 300 μL of complexing agent HDEHP/H2MEHP was loaded on a clean cartridge. Seawater samples were adjusted to pH ~ 3.5 by adding Optima® ammonium hydroxide. The seawater samples were pumped through the cartridges at 20mL/min by a peristaltic pump. Afterward, the cartridges were eluted with 10 mL of 0.01N HCl to remove barium. After barium elution, the cartridges were eluted with 35 mL of 6N hydrochloric acid at 10 mL/min by the peristaltic pump to collect the REEs. The REEs were dried and further purified by Eichrom RE-spec column chemistry. Nd fractions were extracted from REEs by LN-spec column chemistry.</p>
<p>The Nd isotopic ratios were measured on MC-ICP-MS (a ThermoScientific Neptune-Plus®) at Lamont-Doherty Earth Observatory of Columbia University. Nd fractions from column chemistry were dried by evaporation and dissolved in 600-800 μL of 3% nitric acid (HNO3). The international Nd standard JNdi-1 was analyzed between every sample and the average of the standards is reported relative to the recommended value of 143Nd/144Nd = 0.512115 (Tanaka, 2000). For different concentrations of JNdi-1, the measured 143Nd/144Nd isotopic ratios were 0.512079 ± 0.000014 (2σ, n = 126) for 20ppb solutions, 0.512079 ± 0.000013 (2σ, n = 190) for 15 ppb solutions, and 0.512058 ± 0.000022 (2σ, n = 37) for 10ppb solutions. Nd isotopic ratios were normalized to 146Nd/144Nd = 0.7219 for mass fractionation.</p>
<p>We are awaiting the results of Nd isotopic ratios at the crossover station (~40°S and ~42°W) from University of Cambridge.</p>
Specified by the Principal Investigator(s)
<p>The Nd isotopic composition is expressed as εNd = [(<sup>143</sup>Nd/<sup>144</sup>Nd<sub>sample</sub>/<sup>143</sup>Nd/<sup>144</sup>Nd<sub>CHUR</sub>) - 1] × 10<sup>4</sup>, where <sup>143</sup>Nd/<sup>144</sup>Nd<sub>CHUR</sub> = 0.512638 (Jacobsen and Wasserburg, 1980).</p>
<p><strong>BCO-DMO Processing notes:</strong><br />
- added conventional header with dataset name, PI name, version date<br />
- modified parameter names to conform with BCO-DMO naming conventions<br />
- blank values replaced with no data value 'nd'<br />
- replaced spaces with underscores<br />
- converted BTL_ISO_DateTime_UTC to standard format<br />
- reduced decimals of Nd values</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
PI Supplied Instrument Name: Instrument Name: CTD - profiler Instrument Short Name: Instrument Description: The Conductivity, Temperature, Depth (CTD) unit is an integrated instrument package designed to measure the conductivity, temperature, and pressure (depth) of the water column. The instrument is lowered via cable through the water column. It permits scientists to observe the physical properties in real-time via a conducting cable, which is typically connected to a CTD to a deck unit and computer on a ship. The CTD is often configured with additional optional sensors including fluorometers, transmissometers and/or radiometers. It is often combined with a Rosette of water sampling bottles (e.g. Niskin, GO-FLO) for collecting discrete water samples during the cast.
This term applies to profiling CTDs. For fixed CTDs, see https://www.bco-dmo.org/instrument/869934. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/130/
MC-ICP-MS (ThermoScientific Neptune-Plus)
MC-ICP-MS (ThermoScientific Neptune-Plus)
PI Supplied Instrument Name: MC-ICP-MS (ThermoScientific Neptune-Plus) PI Supplied Instrument Description:Measured Nd isotopic ratios 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: JC057
JC057
RRS James Cook
Community Standard Description
International Council for the Exploration of the Sea
RRS James Cook
vessel
JC057
Micha J. A. Rijkenberg
Royal Netherlands Institute for Sea Research
http://dmoserv3.bco-dmo.org/data_docs/GEOTRACES/SWAT/JC057_eventlog/Cruisereport_Geotraces_leg3_250511.pdf
Report describing JC057
RRS James Cook
Community Standard Description
International Council for the Exploration of the Sea
RRS James Cook
vessel