http://lod.bco-dmo.org/id/dataset/780664
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
2019-11-04
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Seawater Nd isotopes and concentrations from the US-GEOTRACES North Atlantic zonal transect (NAZT), 2010 and 2011 on cruises KN199-04 and KN204-01, analyzed by UHawaii
2019-11-04
publication
2019-11-04
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2022-05-13
publication
https://doi.org/10.26008/1912/bco-dmo.780664.9
Steven L. Goldstein
Lamont-Doherty Earth Observatory
principalInvestigator
Katharina Pahnke
University of Hawai'i
principalInvestigator
Howard Scher
University of South Carolina
principalInvestigator
Leopoldo D. Pena
Lamont-Doherty Earth Observatory
principalInvestigator
Torben Stichel
University of Hawaiʻi at Mānoa
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: Pahnke, K., Stichel, T., Duggan, B., Goldstein, S. L., Hartman, A., Pena Gonzalez, L. D., Scher, H. (2022) Seawater Nd isotopes and concentrations from the US-GEOTRACES North Atlantic zonal transect (NAZT), 2010 and 2011 on cruises KN199-04 and KN204-01, analyzed by UHawaii. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 9) Version Date 2019-11-04 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.780664.9 [access date]
seawater Nd isotopes and concentrations from the US-GEOTRACES North Atlantic zonal transect (NAZT) Dataset Description: <p>These&nbsp;data are from the collaboration of three different institutes: The University of South Carolina (USC) and the University of Hawaii at Manoa (UH).</p>
<p>Please contact the PI for further information.</p>
<p>See also associated data from the University of South Carolina (<a href="https://www.bco-dmo.org/dataset/3832" target="_blank">USC</a>) and&nbsp;Lamont-Doherty Earth Observatory (<a href="https://www.bco-dmo.org/dataset/780582" target="_blank">LDEO</a>) of Columbia University.</p> Methods and Sampling: <p><strong>Methodology: </strong>A detailed description can be found in Stichel et al. (2015). &nbsp;See the links&nbsp;below for summaries of the described methodology from the paper.</p>
<p><a href="http://data.bco-dmo.org/GEOTRACES/Pahnke/data_desc_GDAC_Stichel_199-04.pdf" target="_blank">KN199-04 Methodology</a> (pdf)</p>
<p><a href="http://data.bco-dmo.org/GEOTRACES/Pahnke/data_desc_GDAC_Stichel_204-01.pdf" target="_blank">KN204-01 Methodology</a> (pdf)</p>
<p><strong>Fig. 1: Sample locations for the Intermediate Data Product.</strong></p>
<p><a href="http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/Pahnke/stations.png" target="_blank"><img alt="" src="https://datadocs.bco-dmo.org/d2/US_GEOTRACES/AtlanticSection/Pahnke/stations.png" style="width:594px" /></a></p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p><strong>References:</strong>&nbsp;(References listed in the data are codes [1], [2], or [3], corresponding with the following publications/manuscripts)</p>
<p>[1] Stichel, T., Hartman, A.E., Duggan, B., Goldstein, S.L., Scher, H., Pahnke, K., 2015. Separating biogeochemical cycling of neodymium from water mass mixing in the Eastern North Atlantic. Earth Planet. Sci. Lett. 412, 245–260. doi:10.1016/j.epsl.2014.12.008</p>
<p>[2] Hartman, A., Goldstein, S., Pena Gonzalez, L. D., Duggan, B., Pahnke, K., Scher, H., Stichel, T., (2019?)&nbsp;Seawater neodymium composition in the open ocean North Atlantic: water mass signatures and transport.</p>
<p>[3] Duggan, B., Hartman, A.E., Stichel, T., Goldstein, S.L., Pahnke, K., Bizimis, M., Scher, H., in prep. Neodymium Concentrations and Isotopic Signature of the Deep Western Boundary Current Across Line W</p>
<p><strong>Table 1: Summary of the procedures applied in the involved laboratories of University of Hawaii at Mano (UH), Lamont-Doherty Earth Observatory (LDEO) and University of South Carolina (USC).</strong></p>
<table border="1" cellpadding="0" cellspacing="0" style="width:502px">
<tbody>
<tr>
<td>
<p><strong><span style="font-size:11.0pt">Step</span></strong></p>
</td>
<td>
<p><strong><span style="font-size:11.0pt">UH</span></strong></p>
</td>
<td>
<p><strong><span style="font-size:11.0pt">LDEO</span></strong></p>
</td>
<td>
<p><strong><span style="font-size:11.0pt">USC</span></strong></p>
</td>
</tr>
<tr>
<td>
<p><strong><span style="font-size:11.0pt">Pre-concentration</span></strong></p>
</td>
<td>
<p><span style="font-size:11.0pt">Spiked with <sup>146</sup>Nd prior to co-precipitation with FeOOH (~20mg Fe per sample)</span></p>
</td>
<td>
<p><span style="font-size:11.0pt">Spiked with <sup>150</sup>Nd prior to co-precipitation with FeOOH (~20mg Fe per sample)</span></p>
</td>
<td>
<p><span style="font-size:11.0pt">Nd and REE extraction with C18 cartridges, not spiked</span></p>
</td>
</tr>
<tr>
<td>
<p><strong><span style="font-size:11.0pt">Chromatographic separation</span></strong></p>
</td>
<td>
<p><span style="font-size:11.0pt">2-step separation:<br />
1. 1.4ml AG50W-X8 (200-400µm) as primary column. 2. 0.7ml AG50W-X8 (200-400µm) with Alpha-HIBA to purify Nd.<br />
3. ~100µl TRU-Spec column for removal of any remaining Alpha-HIBA in samples.</span></p>
</td>
<td>
<p><span style="font-size:11.0pt">2-step separation:<br />
1. 100µl RE-Spec (100-150µm) as primary column.<br />
2. 0.7ml AG50W-X8 (200-400µm) with Alpha-HIBA to purify Nd.</span></p>
</td>
<td>
<p><span style="font-size:11.0pt">1-step separation:<br />
2ml LN-Spec (50-100µm) for Nd purification. No primary column needed because major ions were removed during pre-concentration</span></p>
</td>
</tr>
<tr>
<td>
<p><strong><span style="font-size:11.0pt">Mass spectrometry</span></strong></p>
</td>
<td>
<p><span style="font-size:11.0pt">VG-Sector TIMS, NdO+, spiked for simultaneous isotope dilution and composition analysis</span></p>
</td>
<td>
<p><span style="font-size:11.0pt">VG-Sector54 TIMS, NdO+, spiked for simultaneous isotope dilution and composition analysis </span></p>
</td>
<td>
<p><span style="font-size:11.0pt">Thermo Neptune Plus MC-ICPMS</span></p>
</td>
</tr>
<tr>
<td>
<p><strong><span style="font-size:11.0pt">Other</span></strong></p>
</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>
<p><span style="font-size:11.0pt">Concentrations were determined on a previously separated 500ml aliquot by isotope dilution</span></p>
</td>
</tr>
</tbody>
</table>
<p>&nbsp;</p>
<p>&nbsp;</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0927241 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0927241
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0928409 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0928409
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0926981 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0926981
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
Katharina Pahnke
University of Hawai'i
+49 (0)441 7983328
Max Planck Research Group for Marine Isotope Geochemistry, ICBM Carl-von-Ossietzky-Str. 9-11
Oldenburg
26129
Germany
kpahnke@mpi-bremen.de
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
Leopoldo D. Pena
Lamont-Doherty Earth Observatory
+34 934021382
GRC Geociències Marines Department of Earth and Ocean Dynamics
Barcelona
08028
Spain
lpena@ub.edu
pointOfContact
Torben Stichel
University of Hawaiʻi at Mānoa
845-365-8609
Department of Geology & Geophysics 1680 East-West Rd.,, POST 719B
Honolulu
HI
96822
tstichel@hawaii.edu
pointOfContact
asNeeded
Dataset Version: 9
Unknown
cruise_id
cruise_name
station_GEOTRC
depth_ctd
depth_GEOTRC_CTD_round
cast_GEOTRC
event_GEOTRC
date
time
BTL_ISO_DateTime_UTC
lat
lon
sample_GEOTRC
ND_143_ND_144RATIO
ND_143_ND_144_FLAG_W
int_ND_143_ND_144RATIO
EPSILON_Nd
EPSILON_ND_FLAG_W
EPSILON_ND_2SD
diss_Nd_pmol_kg
REE_ND_UH_FLAG_W
LAB
Instrument
Reference
CTD Sea-Bird
GeoFish
Mass Spectrometer
Niskin bottle
theme
None, User defined
Cruise identfier
cruise name
station
depth
cast
event
date
time of day
ISO_DateTime_UTC
latitude
longitude
sample identification
Nd143_144
flag
No BCO-DMO term
standard deviation
Nd
instrument
reference_paper
featureType
BCO-DMO Standard Parameters
CTD Sea-Bird
GeoFish Towed near-Surface Sampler
Mass Spectrometer
Niskin bottle
instrument
BCO-DMO Standard Instruments
KN204-01
KN199-04
service
Deployment Activity
Subtropical northern Atlantic 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. GEOTRACES North Atlantic Transect (GA03)
https://www.geotraces.org/
U.S. GEOTRACES North Atlantic Transect (GA03)
<p><em>Much of this text appeared in an article published in OCB News, October 2008, by the OCB Project Office.</em></p>
<p>The first U.S. GEOTRACES Atlantic Section will be specifically centered around a sampling cruise to be carried out in the North Atlantic in 2010. Ed Boyle (MIT) and Bill Jenkins (WHOI) organized a three-day planning workshop that was held September 22-24, 2008 at the Woods Hole Oceanographic Institution. The main goal of the workshop, sponsored by the National Science Foundation and the U.S. GEOTRACES Scientific Steering Committee, was to design the implementation plan for the first U.S. GEOTRACES Atlantic Section. The primary cruise design motivation was to improve knowledge of the sources, sinks and internal cycling of Trace Elements and their Isotopes (TEIs) by studying their distributions along a section in the North Atlantic (Figure 1). The North Atlantic has the full suite of processes that affect TEIs, including strong meridional advection, boundary scavenging and source effects, aeolian deposition, and the salty Mediterranean Outflow. The North Atlantic is particularly important as it lies at the "origin" of the global Meridional Overturning Circulation.</p>
<p>It is well understood that many trace metals play important roles in biogeochemical processes and the carbon cycle, yet very little is known about their large-scale distributions and the regional scale processes that affect them. Recent advances in sampling and analytical techniques, along with advances in our understanding of their roles in enzymatic and catalytic processes in the open ocean provide a natural opportunity to make substantial advances in our understanding of these important elements. Moreover, we are motivated by the prospect of global change and the need to understand the present and future workings of the ocean's biogeochemistry. The GEOTRACES strategy is to measure a broad suite of TEIs to constrain the critical biogeochemical processes that influence their distributions. In addition to these "exotic" substances, more traditional properties, including macronutrients (at micromolar and nanomolar levels), CTD, bio-optical parameters, and carbon system characteristics will be measured. The cruise starts at Line W, a repeat hydrographic section southeast of Cape Cod, extends to Bermuda and subsequently through the North Atlantic oligotrophic subtropical gyre, then transects into the African coast in the northern limb of the coastal upwelling region. From there, the cruise goes northward into the Mediterranean outflow. The station locations shown on the map are for the "fulldepth TEI" stations, and constitute approximately half of the stations to be ultimately occupied.</p>
<p><em>Figure 1. The proposed 2010 Atlantic GEOTRACES cruise track plotted on dissolved oxygen at 400 m depth. Data from the World Ocean Atlas (Levitus et al., 2005) were plotted using Ocean Data View (courtesy Reiner Schlitzer). [click on the image to view a larger version]</em><br />
<a href="http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/GEOTRACES_Atl_stas.jpg" target="_blank"><img alt="" src="https://datadocs.bco-dmo.org/d2/US_GEOTRACES/AtlanticSection/GEOTRACES_Atl_stas.jpg" style="width:350px" /></a></p>
<p>Hydrography, CTD and nutrient measurements will be supported by the Ocean Data Facility (J. Swift) at Scripps Institution of Oceanography and funded through NSF Facilities. They will be providing an additional CTD rosette system along with nephelometer and LADCP. A trace metal clean Go-Flo Rosette and winch will be provided by the group at Old Dominion University (G. Cutter) along with a towed underway pumping system.</p>
<p>The North Atlantic Transect cruise began in 2010 with KN199 leg 4 (station sampling) and leg 5 (underway sampling only) (Figure 2).</p>
<p><a href="http://bcodata.whoi.edu//US_GEOTRACES/AtlanticSection/Cruise_Report_for_Knorr_199_Final_v3.pdf" target="_blank">KN199-04 Cruise Report (PDF)</a></p>
<p><em>Figure 2. The red line shows the cruise track for the first leg of the US Geotraces North Atlantic Transect on the R/V Knorr in October 2010. The rest of the stations (beginning with 13) will be completed in October-December 2011 on the R/V Knorr (courtesy of Bill Jenkins, Chief Scientist, GNAT first leg). [click on the image to view a larger version]</em><br />
<a href="http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/GNAT_stationPlan.jpg" target="_blank"><img alt="Atlantic Transect Station location map" src="https://datadocs.bco-dmo.org/d2/US_GEOTRACES/AtlanticSection/GNAT_stationPlan_sm.jpg" style="width:350px" /></a></p>
<p>The section completion effort resumed again in November 2011 with KN204-01A,B (Figure 3).</p>
<p><a href="http://bcodata.whoi.edu//US_GEOTRACES/AtlanticSection/Submitted_Preliminary_Cruise_Report_for_Knorr_204-01.pdf" target="_blank">KN204-01A,B Cruise Report (PDF)</a></p>
<p><em>Figure 3. Station locations occupied on the US Geotraces North Atlantic Transect on the R/V Knorr in November 2011. [click on the image to view a larger version]</em><br />
<a href="http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/KN204-01_Stations.png" target="_blank"><img alt="Atlantic Transect/Part 2 Station location map" src="https://datadocs.bco-dmo.org/d2/US_GEOTRACES/AtlanticSection/KN204-01_Stations.png" style="width:350px" /></a></p>
<p>Data from the North Atlantic Transect cruises are available under the Datasets heading below, and consensus values for the SAFe and North Atlantic GEOTRACES Reference Seawater Samples are available from the GEOTRACES Program Office: <a href="http://www.geotraces.org/science/intercalibration/322-standards-and-reference-materials?acm=455_215" target="_blank">Standards and Reference Materials</a></p>
<p><strong>ADCP data</strong> are available from the Currents ADCP group at the University of Hawaii at the links below:<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2010.html#kn199_4" target="_blank">KN199-04</a> (leg 1 of 2010 cruise; Lisbon to Cape Verde)<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2010.html#kn199_5" target="_blank">KN199-05</a> (leg 2 of 2010 cruise; Cape Verde to Charleston, NC)<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2011.html#kn204_01" target="_blank">KN204-01A</a> (part 1 of 2011 cruise; Woods Hole, MA to Bermuda)<br />
<a href="http://currents.soest.hawaii.edu/uhdas_adcp/year2011.html#kn204_02" target="_blank">KN204-01B</a> (part 2 of 2011 cruise; Bermuda to Cape Verde)</p>
U.S. GEOTRACES NAT
largerWorkCitation
project
eng; USA
oceans
Subtropical northern Atlantic Ocean
-69.8644
-9.6601
17.3487
39.7014
2010-10-16
2011-12-10
Subtropical western and eastern North Atlantic Ocean (GA03)
0
BCO-DMO catalogue of parameters from Seawater Nd isotopes and concentrations from the US-GEOTRACES North Atlantic zonal transect (NAZT), 2010 and 2011 on cruises KN199-04 and KN204-01, analyzed by UHawaii
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/793371.rdf
Name: cruise_id
Units: unitless
Description: <p>Official cruise identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/793372.rdf
Name: cruise_name
Units: unitless
Description: <p>agreed nomenclature on cruise section during ODU-GEOTRACES workshop in March 2013</p>
http://lod.bco-dmo.org/id/dataset-parameter/793373.rdf
Name: station_GEOTRC
Units: unitless
Description: <p>station number; provided in original data submission</p>
http://lod.bco-dmo.org/id/dataset-parameter/793374.rdf
Name: depth_ctd
Units: meters
Description: <p>sampling depth of CTD; also added are depths of surface sampled by GeoFish. Values provided by PI.</p>
http://lod.bco-dmo.org/id/dataset-parameter/793375.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/793376.rdf
Name: cast_GEOTRC
Units: unitless
Description: <p>cast number</p>
http://lod.bco-dmo.org/id/dataset-parameter/793377.rdf
Name: event_GEOTRC
Units: unitless
Description: <p>event number; provided in original data submission</p>
http://lod.bco-dmo.org/id/dataset-parameter/793378.rdf
Name: date
Units: yyyymmdd
Description: <p>date of cast; UTC</p>
http://lod.bco-dmo.org/id/dataset-parameter/793379.rdf
Name: time
Units: HHMM
Description: <p>time of collection; UTC</p>
http://lod.bco-dmo.org/id/dataset-parameter/793380.rdf
Name: BTL_ISO_DateTime_UTC
Units: YYYY-MM-DDTHH:MM:SS[.xx][+/-TZ]
Description: <p>Date and time (UTC) variable recorded at the bottle sampling time in ISO compliant format. Values were added from the intermediate US GEOTRACES master file (see Processing Description).</p>
http://lod.bco-dmo.org/id/dataset-parameter/793381.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude; North is positive.Values were added from the intermediate US GEOTRACES master file (see Processing Description).</p>
http://lod.bco-dmo.org/id/dataset-parameter/793382.rdf
Name: lon
Units: decimal degrees
Description: <p>longitude; East is positive.Values were added from the intermediate US GEOTRACES master file (see Processing Description).</p>
http://lod.bco-dmo.org/id/dataset-parameter/793383.rdf
Name: sample_GEOTRC
Units: unitless
Description: <p>GEOTRACES sample number; provided in original data submission. Values were added from the intermediate US GEOTRACES master file (see Processing Description) and match those provided by PI.</p>
http://lod.bco-dmo.org/id/dataset-parameter/793384.rdf
Name: ND_143_ND_144RATIO
Units: unitless
Description: <p>Final atom ratio of 143Nd/144Nd after correcting mass bias and instrumental offset</p>
http://lod.bco-dmo.org/id/dataset-parameter/793385.rdf
Name: ND_143_ND_144_FLAG_W
Units: unitless
Description: <p>Quality flag: Flag 0: good value; Flag 1: no value or unknown value; Flag 2: replacement considered good value; Flag 4: not trusted; -999: missing value</p>
http://lod.bco-dmo.org/id/dataset-parameter/793386.rdf
Name: int_ND_143_ND_144RATIO
Units: unitless
Description: <p>Standard error of the mean using standard deviation divided by the square root of ratios in one measurement (e.g. UH used normally 378 ratios for one measurement)</p>
http://lod.bco-dmo.org/id/dataset-parameter/793387.rdf
Name: EPSILON_Nd
Units: parts per 10000
Description: <p>final 143Nd/144Nd normalized to 0.512638 (143Nd1/44Nd of the Chondritic Uniform Reservoir in Jacobsen and Wasserburg - 1980) in parts per 10000.</p>
http://lod.bco-dmo.org/id/dataset-parameter/793388.rdf
Name: EPSILON_ND_FLAG_W
Units: unitless
Description: <p>Quality flag: Flag 0: good value; Flag 1: no value or unknown value; Flag 2: replacement considered good value; Flag 4: not trusted; -999: missing value</p>
http://lod.bco-dmo.org/id/dataset-parameter/793389.rdf
Name: EPSILON_ND_2SD
Units: parts per 10000
Description: <p>2 standard deviations of the repeatedly measured standards during the analysis</p>
http://lod.bco-dmo.org/id/dataset-parameter/793390.rdf
Name: diss_Nd_pmol_kg
Units: pmol/kg
Description: <p>dissolved Nd concentration</p>
http://lod.bco-dmo.org/id/dataset-parameter/793391.rdf
Name: REE_ND_UH_FLAG_W
Units: unitless
Description: <p>Quality flag: Flag 0: good value; Flag 1: no value or unknown value; Flag 2: replacement considered good value; Flag 4: not trusted; -999: missing value</p>
http://lod.bco-dmo.org/id/dataset-parameter/793392.rdf
Name: LAB
Units: unitless
Description: <p>the lab group that analyzed the sample: LDEO = Lamont-Doherty Earth Observatory: UH = Univ. of Hawaii; USC = Univ. of South Carolina</p>
http://lod.bco-dmo.org/id/dataset-parameter/793393.rdf
Name: Instrument
Units: unitless
Description: <p>instrument used for analysis: TIMS: Thermal ionization mass spectrometer (VG-Sector (UH) or VG-Sector54 (LDEO)); ICPMS: Multi-Collector Inductively Coupled Mass Spectrometer (NeptunePlus)</p>
http://lod.bco-dmo.org/id/dataset-parameter/793394.rdf
Name: Reference
Units: unitless
Description: <p>Publication reference; see Description for details</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
18839
https://darchive.mblwhoilibrary.org/bitstream/1912/28734/1/dataset-780664_gt10-11-neodymium-uh__v9.tsv
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https://doi.org/10.26008/1912/bco-dmo.780664.9
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onLine
dataset
<p><strong>Methodology: </strong>A detailed description can be found in Stichel et al. (2015). &nbsp;See the links&nbsp;below for summaries of the described methodology from the paper.</p>
<p><a href="http://data.bco-dmo.org/GEOTRACES/Pahnke/data_desc_GDAC_Stichel_199-04.pdf" target="_blank">KN199-04 Methodology</a> (pdf)</p>
<p><a href="http://data.bco-dmo.org/GEOTRACES/Pahnke/data_desc_GDAC_Stichel_204-01.pdf" target="_blank">KN204-01 Methodology</a> (pdf)</p>
<p><strong>Fig. 1: Sample locations for the Intermediate Data Product.</strong></p>
<p><a href="http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/Pahnke/stations.png" target="_blank"><img alt="" src="https://datadocs.bco-dmo.org/d2/US_GEOTRACES/AtlanticSection/Pahnke/stations.png" style="width:594px" /></a></p>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p><strong>References:</strong>&nbsp;(References listed in the data are codes [1], [2], or [3], corresponding with the following publications/manuscripts)</p>
<p>[1] Stichel, T., Hartman, A.E., Duggan, B., Goldstein, S.L., Scher, H., Pahnke, K., 2015. Separating biogeochemical cycling of neodymium from water mass mixing in the Eastern North Atlantic. Earth Planet. Sci. Lett. 412, 245–260. doi:10.1016/j.epsl.2014.12.008</p>
<p>[2] Hartman, A., Goldstein, S., Pena Gonzalez, L. D., Duggan, B., Pahnke, K., Scher, H., Stichel, T., (2019?)&nbsp;Seawater neodymium composition in the open ocean North Atlantic: water mass signatures and transport.</p>
<p>[3] Duggan, B., Hartman, A.E., Stichel, T., Goldstein, S.L., Pahnke, K., Bizimis, M., Scher, H., in prep. Neodymium Concentrations and Isotopic Signature of the Deep Western Boundary Current Across Line W</p>
<p><strong>Table 1: Summary of the procedures applied in the involved laboratories of University of Hawaii at Mano (UH), Lamont-Doherty Earth Observatory (LDEO) and University of South Carolina (USC).</strong></p>
<table border="1" cellpadding="0" cellspacing="0" style="width:502px">
<tbody>
<tr>
<td>
<p><strong><span style="font-size:11.0pt">Step</span></strong></p>
</td>
<td>
<p><strong><span style="font-size:11.0pt">UH</span></strong></p>
</td>
<td>
<p><strong><span style="font-size:11.0pt">LDEO</span></strong></p>
</td>
<td>
<p><strong><span style="font-size:11.0pt">USC</span></strong></p>
</td>
</tr>
<tr>
<td>
<p><strong><span style="font-size:11.0pt">Pre-concentration</span></strong></p>
</td>
<td>
<p><span style="font-size:11.0pt">Spiked with <sup>146</sup>Nd prior to co-precipitation with FeOOH (~20mg Fe per sample)</span></p>
</td>
<td>
<p><span style="font-size:11.0pt">Spiked with <sup>150</sup>Nd prior to co-precipitation with FeOOH (~20mg Fe per sample)</span></p>
</td>
<td>
<p><span style="font-size:11.0pt">Nd and REE extraction with C18 cartridges, not spiked</span></p>
</td>
</tr>
<tr>
<td>
<p><strong><span style="font-size:11.0pt">Chromatographic separation</span></strong></p>
</td>
<td>
<p><span style="font-size:11.0pt">2-step separation:<br />
1. 1.4ml AG50W-X8 (200-400µm) as primary column. 2. 0.7ml AG50W-X8 (200-400µm) with Alpha-HIBA to purify Nd.<br />
3. ~100µl TRU-Spec column for removal of any remaining Alpha-HIBA in samples.</span></p>
</td>
<td>
<p><span style="font-size:11.0pt">2-step separation:<br />
1. 100µl RE-Spec (100-150µm) as primary column.<br />
2. 0.7ml AG50W-X8 (200-400µm) with Alpha-HIBA to purify Nd.</span></p>
</td>
<td>
<p><span style="font-size:11.0pt">1-step separation:<br />
2ml LN-Spec (50-100µm) for Nd purification. No primary column needed because major ions were removed during pre-concentration</span></p>
</td>
</tr>
<tr>
<td>
<p><strong><span style="font-size:11.0pt">Mass spectrometry</span></strong></p>
</td>
<td>
<p><span style="font-size:11.0pt">VG-Sector TIMS, NdO+, spiked for simultaneous isotope dilution and composition analysis</span></p>
</td>
<td>
<p><span style="font-size:11.0pt">VG-Sector54 TIMS, NdO+, spiked for simultaneous isotope dilution and composition analysis </span></p>
</td>
<td>
<p><span style="font-size:11.0pt">Thermo Neptune Plus MC-ICPMS</span></p>
</td>
</tr>
<tr>
<td>
<p><strong><span style="font-size:11.0pt">Other</span></strong></p>
</td>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td>
<p><span style="font-size:11.0pt">Concentrations were determined on a previously separated 500ml aliquot by isotope dilution</span></p>
</td>
</tr>
</tbody>
</table>
<p>&nbsp;</p>
<p>&nbsp;</p>
Specified by the Principal Investigator(s)
<p><strong>Data Processing:</strong><br />
The measured 143Nd/144Nd isotope ratios were normalized to those of the JNdi-1 Nd standard (0.512115, Tanaka et al., 2000). Please see attached methodology files for further information on the data processing.<br />
<br />
<strong>BCO-DMO Processing Notes:</strong><br />
- Added the sample_GEOTRC column by copying the original sample column and removing the '_2' from sample duplicates.<br />
- Added Cast_ISO_DateTime_UTC from the original date and time fields.</p>
<p>SUMMARY OF CORRECTIONS MADE TO SUBMITTED DATA:</p>
<p>2017-07-17: parameter descriptions revised as per request by R. Anderson: ND_143_ND_144RATIO and int_ND_143_ND_144RATIO.</p>
<p>version 8: The data for version 8 (April 2016) completely replaced those from version 7.<br />
- The quality flag scheme was changed in accordance with ODV.<br />
- New parameters: EPSILON_Nd, EPSILON_ND_FLAG_W, EPSILON_ND_2SD, Instrument, and Reference were added which are described in the documentation.<br />
- Column cruise_part was removed.<br />
- Version 8b: changed quality flags for KN204-01, stations 3 and 8 from 0 to 2</p>
<p>- 07 March 2013: Made the following corrections after consulting with dataset scientist:</p>
<p>KN199-04<br />
-- Changed cast number of event 3176 from 2 to 8.<br />
-- Changed cast number of event 3169 from 8 to 2.<br />
-- Changed event number of KN199-04 station 3 cast 6 from 2059 to 2061.<br />
-- Changed event number of KN199-04 station 7 cast 6 from 2107 to 2132.<br />
-- Changed event number of KN199-04 station 9 cast 3 from 2059 to 2165.<br />
-- Changed event number of KN199-04 station 10 cast 6 from 2191 to 2194.<br />
-- Changed event number of KN199-04 station 11 cast 6 from 2206 to 2208.<br />
-- Changed bottle number of sample #5393 from 5 to 4 (station 5, cast 6).<br />
-- Changed bottle number of sample #5394 from 4 to 3 (station 5, cast 6).<br />
-- Changed time of event #2024 from 2129 to 1202.<br />
<br />
KN204-01<br />
-- Changed bottle number of sample #7955 from 8 to 9 (station 22, cast 4).</p>
<p>Additional data and revisions were served 19 Sept. 2013.</p>
<p>version 9: The last version (8b) of the dataset was split into three datasets by LAB. LDEO, UH, and USC.<br />
See USC dataset: https://www.bco-dmo.org/dataset/3832<br />
&nbsp; &nbsp;LDEO dataset:&nbsp;https://www.bco-dmo.org/dataset/780582</p>
<p><strong>Additional GEOTRACES Processing:</strong><br />
After the data were submitted to the International Data Management Office, BODC, the office noticed that important identifying information was missing in many datasets. With the agreement of BODC and the US GEOTRACES lead PIs, BCO-DMO added standard US GEOTRACES information, such as the US GEOTRACES event number, to each submitted dataset lacking this information. To accomplish this, BCO-DMO compiled a 'master' dataset composed of the following parameters: station_GEOTRC, cast_GEOTRC (bottle and pump data only), event_GEOTRC, sample_GEOTRC, sample_bottle_GEOTRC (bottle data only), bottle_GEOTRC (bottle data only), depth_GEOTRC_CTD (bottle data only), depth_GEOTRC_CTD_rounded (bottle data only), BTL_ISO_DateTime_UTC (bottle data only), and GeoFish_id (GeoFish data only). This added information will facilitate subsequent analysis and inter comparison of the datasets.<br />
<br />
Bottle parameters in the master file were taken from the GT-C_Bottle_GT10, GT-C_Bottle_GT11, ODF_Bottle_GT10, and ODF_Bottle_GT11 datasets. Non-bottle parameters, including those from GeoFish tows, Aerosol sampling, and McLane Pumps, were taken from the Event_Log_GT10 and Event_Log_GT11 datasets. McLane pump cast numbers missing in event logs were taken from the Particulate Th-234 dataset submitted by Ken Buesseler.<br />
<br />
A standardized BCO-DMO method (called "join") was then used to merge the missing parameters to each US GEOTRACES dataset, most often by matching on sample_GEOTRC or on some unique combination of other parameters.<br />
<br />
If the master parameters were included in the original data file and the values did not differ from the master file, the original data columns were retained and the names of the parameters were changed from the PI-submitted names to the standardized master names. If there were differences between the PI-supplied parameter values and those in the master file, both columns were retained. If the original data submission included all of the master parameters, no additional columns were added, but parameter names were modified to match the naming conventions of the master file.<br />
<br />
See the dataset parameters documentation for a description of which parameters were supplied by the PI and which were added via the join method.</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
CTD Sea-Bird
CTD Sea-Bird
PI Supplied Instrument Name: CTD Sea-Bird PI Supplied Instrument Description:SeaBird CTD, oxygen, fluorescence and transmissometer sensors were attached to the frame in stainless steel or anodized aluminum housings. Instrument Name: CTD Sea-Bird Instrument Short Name:CTD Sea-Bird Instrument Description: A Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics. This instrument designation is used when specific make and model are not known or when a more specific term is not available in the BCO-DMO vocabulary. Refer to the dataset-specific metadata for more information about the specific CTD used. More information from: http://www.seabird.com/ Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/130/
GeoFish
GeoFish
PI Supplied Instrument Name: GeoFish 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/
Mass Spectrometer
Mass Spectrometer
PI Supplied Instrument Name: Mass Spectrometer PI Supplied Instrument Description:Neodymium was measured as NdO+ on a VG TIMS Sector ( at UH) and VG TIMS Sector54 ( at LDEO). At USC, the Nd isotope composition was measured on a Thermo Neptune Plus MC-ICPMS. Instrument Name: Mass Spectrometer Instrument Short Name:Mass Spec Instrument Description: General term for instruments used to measure the mass-to-charge ratio of ions; generally used to find the composition of a sample by generating a mass spectrum representing the masses of sample components. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB16/
Niskin bottle
Niskin bottle
PI Supplied Instrument Name: Niskin bottle PI Supplied Instrument Description:30L Niskin bottles with Nylon-coated internal stainless steel springs and Viton o-rings, mounted on a powder-coated aluminum frame. 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: KN204-01
KN204-01
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel
KN204-01
Edward A. Boyle
Massachusetts Institute of Technology
http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/STS_Prelim_GT11_Doc.pdf
Report describing KN204-01
Cruise: KN199-04
KN199-04
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel
KN199-04
William J. Jenkins
Woods Hole Oceanographic Institution
http://bcodata.whoi.edu/US_GEOTRACES/AtlanticSection/Cruise_Report_for_Knorr_199_Final_v3.pdf
Report describing KN199-04
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel