<div><p>Samples were obtained from the GEOTRACES GP15 cruise aboard the R/V <em>Roger Revelle</em> (RR1814 from September 18 to October 21 of 2018, and RR1815 from October 24 to November 23 of 2018). The <em>Revelle</em> was equipped with the GEOTRACES CTD/rosette (Model 32G, Sea-Bird Electronics). This rosette contained 24 Teflon-coated 12-liter (L) GO-FLO bottles for trace metal clean sampling (Model 10812 T, General Oceanics) with sensors for dissolved oxygen, conductivity, chlorophyll fluorescence, pressure, beam transmittance, and temperature. These samples were preserved by filtering them through 0.2-micrometer (µm) Acropak-200 Supor capsule filter (Pall Corporation) and storing them in acid-washed 1 L Low-Density Polyethylene (Nalgene; LDPE) bottles. Samples (1L) were acidified to pH = 1.8 with 1 mL concentrated distilled HCl and added with 1 mL 30% H2O2 (Optimaᵀᴹ grade; Fisher; CAS#: 7722-84-1), and left for over 1 month.</p>
<p>Metal concentration analyses were identical to those used in Hawco et al. (2020). For each sample, 15 milliliters (mL) seawater was transferred to a acid-washed 15 mL polypropylene Falcon tube (VWR; Catalog #89049-172), then 50 microliters (µL) of an isotope spike (containing ⁵⁷Fe, ⁶²Ni, ⁶⁵Cu, ⁶⁷Zn, ²⁰⁷Pb, and ¹¹⁰Cd) was added to the 15 mL tube and thoroughly mixed with the sample. The samples would then sit overnight before they were preconcentrated by a SC-DX seaFAST system (Elemental Scientific; M-SFS2-MG-52). The seaFAST system helped to preconcentrate the seawater samples and remove the salt matrix. About 10 mL of seawater was injected through the Nobias PA-1 column of seaFAST and 0.5 mL eluent (1M HNO₃ containing 1 ppb In) was used to elute trace metals for concentration measurement. The trace metal concentrations were then measured by a Thermo Element 2ᵀᴹ Inductively Coupled Plasma - Mass Spectrometer. Concentrations of copper (Cu) and nickel (Ni) were derived by using an isotope dilution method.</p></div>
GP15 Dissolved Ni and Cu - Leg 1
GP15 Dissolved Ni and Cu - Leg 1
<div><p><strong>Data Processing:</strong><br />
Excel 2016 with home-made data reduction algorithms.</p>
<p><strong>Quality Flags:</strong><br />
Quality flags were assigned following the GEOTRACES Quality Flag Policy (<a href="https://www.geotraces.org/geotraces-quality-flag-policy/" target="_blank">https://www.geotraces.org/geotraces-quality-flag-policy/</a>), which recommends the SeaDataNet Scheme. Flags are defined as:<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 (BDL);<br />
7 = value in excess;<br />
8 = interpolated value;<br />
9 = missing value;<br />
A = value phenomenon uncertain.</p>
<p><strong>BCO-DMO Processing:</strong><br />
- renamed fields to comply with BCO-DMO naming conventions;<br />
- moved rows for station 18.6 to the leg 2 (RR1815) dataset;<br />
- created the ISO8601 date-time fields;<br />
- replaced "N/A" and "-999" with "nd" (no data).</p></div>
885319
GP15 Dissolved Ni and Cu - Leg 1
2022-12-13T14:47:55-05:00
2022-12-13T14:47:55-05:00
2023-07-07T16:10:26-04:00
urn:bcodmo:dataset:885319
Dissolved concentrations of nickel and copper from bottle samples collected on Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018
This dataset contains dissolved concentrations of nickel (Ni) and copper (Cu) from bottle samples. The samples were collected during the U.S. GEOTRACES PMT cruise aboard the R/V Roger Revelle (RR1814 from September 18th to October 21st of 2018). The dataset also includes station number, date, time, latitude, longitude, event number, event description, sample number, depth, and data quality flag. The data from Leg 2 of this transect, RR1815, are available as a related dataset.
false
Bian, X., Yang, S., John, S. G. (2022) Dissolved concentrations of nickel and copper from bottle samples collected on Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2022-12-15 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.885319.1 [access date]
true
1
10.26008/1912/bco-dmo.885319.1
false
GEOTRACES PMT cruise
GP15
nickel
copper
2022-12-15
Datapackage.json
Frictionless Data Package
https://www.bco-dmo.org/dataset/885319/datapackage.json
application/vnd.datapackage+json
PDF
https://www.bco-dmo.org/dataset/885319/Dataset_description.pdf
application/pdf
ISO 19115-2 (NOAA Profile)
https://www.bco-dmo.org/dataset/885319/iso
application/xml
http://www.isotc211.org/2005/gmd-noaa
Dublin Core
https://www.bco-dmo.org/dataset/885319/dublin-core
application/xml
http://purl.org/dc/elements/1.1/
885319
http://lod.bco-dmo.org/id/dataset/885319
2018-09-24 - 2018-10-21
2018-09-24
2018-09-24
---24
266
--09
2018
2018-10-21
2018-10-21
---21
293
--10
2018
OSPREY
http://www.opengis.net/def/crs/OGC/1.3/CRS84
<http://www.opengis.net/def/crs/OGC/1.3/CRS84> POLYGON((-156.962 19.681, -151.999 19.681, -151.999 19.681, -151.999 56.059, -156.962 56.059, -156.962 19.681))
-156.962
19.681
-151.999
56.059
37.870000000000
-154.480500000000