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Dissolved lead (Pb) along the US GEOTRACES East Pacific Zonal Transect from the R/V Thomas G. Thompson TN303 cruise in the Eastern Tropical Pacific, Peru to Tahiti during 2013 (NCEI Accession 0291317)


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            title:  Dissolved lead (Pb) along the US GEOTRACES East Pacific Zonal Transect from the R/V Thomas G. Thompson TN303 cruise in the Eastern Tropical Pacific, Peru to Tahiti during 2013 (NCEI Accession 0291317)
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                date:  2024-04-19
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                  Anchor:  http://lod.bco-dmo.org/id/person/646855 Arthur Russell Flegal
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        abstract:  This dataset contains chemical and physical data collected on R/V Thomas G. Thompson during cruise TN303 in the South Pacific Ocean from 2013-10-29 to 2013-12-17. These data include depth, trace metal concentration, and water pressure. The instruments used to collect these data include GO-FLO Bottle and GeoFish Towed near-Surface Sampler. These data were collected by Arthur Russell Flegal of University of California-Santa Cruz as part of the "U.S. GEOTRACES East Pacific Zonal Transect (U.S. GEOTRACES EPZT)" project and "U.S. GEOTRACES (U.S. GEOTRACES)" program. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2023-03-09. The following is the text of the dataset description provided by BCO-DMO: Dissolved Pb data from US GEOTRACES East Pacific Zonal Transect Dataset Description: Dissolved lead concentrations of the transect in samples taken from the GEOTRACES GO-FLO rosette surface casts and filtered through a 0.2um Acropak capsule filter.
        purpose:  This dataset is available to the public for a wide variety of uses including scientific research and analysis.
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          Anchor:  https://nsf.gov/awardsearch/showAward?AWD_ID=1234213 Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1234213 Award URL: http://nsf.gov/awardsearch/showAward?AWD_ID=1234213
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              Anchor:  https://vocab.ices.dk/services/pox/GetCodeDetail/SHIPC/3250 THOMAS G. THOMPSON (call sign: KTDQ, ICES code: 3250, 1991)
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              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/fa0ec8a7-ebed-4f2d-834b-1fa6a1c2e0ed OCEAN > PACIFIC OCEAN > SOUTH PACIFIC OCEAN
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              Anchor:  http://lod.bco-dmo.org/id/deployment/499719 Eastern Tropical Pacific - Transect from Peru to Tahiti
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            otherConstraints:  Cite as: Flegal, Arthur Russell (2024). Dissolved lead (Pb) along the US GEOTRACES East Pacific Zonal Transect from the R/V Thomas G. Thompson TN303 cruise in the Eastern Tropical Pacific, Peru to Tahiti during 2013 (NCEI Accession 0291317). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0291317. Accessed [date].
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                title:  Flegal, A. R. (2016) Dissolved lead (Pb) along the US GEOTRACES East Pacific Zonal Transect from the R/V Thomas G. Thompson TN303 cruise in the Eastern Tropical Pacific, Peru to Tahiti during 2013. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2016-06-03. https://doi.org/10.26008/1912/bco-dmo.646842.1
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                      Anchor:  http://lod.bco-dmo.org/id/person/646855 Arthur Russell Flegal
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        topicCategory:  (MD_TopicCategoryCode) oceans
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                westBoundLongitude:  -152.12
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                    beginPosition:  2013-10-29
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        supplementalInformation:  Acquisition Description: Sampling: Sample bottles were LDPE and cleaned in accordance with the GEOTRACES cookbook (). Sample bottles were stored in weak (~0.1 N) HNO 3 , and were emptied before shipping. Samples were collected using the U.S. GEOTRACES sampling system of 24 Teflon-coated GO-FLO bottles (Cutter and Bruland, 2012). At each station, the bottles were deployed open and tripped on ascent at 3 m/min. GO-FLOs were sampled in the GEOTRACES trace metal clean sampling van that contained HEPA-filtered air. During sampling, the GO-FLO bottles were pressurized to ~0.4 atm with HEPA-filtered air, and their spigots were fitted with an acid-cleaned piece of Bev-a-Line tubing that fed into an Acropak-200 Supor capsule filter (0.2 µm pore size made of polyethersulfone). Before use, this filter had been filled with filtered surface seawater that had been acidifed to pH 2 with trace metal clean HCl and left overnight to rinse. Before collecting any subsamples, at least 500mL of seawater was passed through the filter (while eliminating air bubbles in the capsule reservoir). Sample bottles were rinsed three times with 10% sample volume before filling. Acropak filters were used for at most 3 casts before a new filter was used, and they were stored empty in a refrigerator while not in use. GEOFish surface samples were taken using an all-plastic "towed fish" pumping system as described in Bruland et al. 2005 at approximately 3 m depth and were similarly filtered and sampled. Samples were acidified at sea with the equivalent of 4mL quartz-distilled 6M HCl per liter of seawater (resulting in pH 1.7-1.8). Samples were sitting acidified for several months before analysis back in the laboratory. Analysis: Samples were analyzed using the method of Ndung’u et. al. (2003) with adaptations from Zurbrick, et. al. (2013). Aliquots of samples are poured in to 15mL LDPE bottles for analysis. Samples, blanks, reference materials and standards are all treated equally. They are buffered with trace metal clean ammonium acetate (pH 9) in line and sent across a Toyopearl AF-Chelate 650 M resin column. The column is rinsed with diluted ammonium acetate, and eluted in 1.5N quartz distilled nitric acid (with added bismuth as an internal standard) into the injector of the HR-ICP-MS. Counts of lead are measured throughout the elution, yielding a curve which is then integrated to give our raw values. Standards are made by spiking lead into low concentration seawater. Blanks are 24mL HCl in Milli-Q. Reference materials used were SAFe S1, SAFe D2, and GEOTRACES reference samples GS and GD. Standard curves are run at the beginning and the end of runs and reference materials and blanks are run throughout (every 10 or less samples).
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/1730 NOAA National Centers for Environmental Information
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                fees:  In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
                orderingInstructions:  Contact NCEI for other distribution options and instructions.
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                description:  NCEI Accession 0291317 v1.1 was published.
                dateTime:
                  DateTime:  2024-04-19T17:25:38Z
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                                    description:  published 2024-04-19T17:25:38Z
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    acquisitionInformation:  (MI_AcquisitionInformation)
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  bottle
            type:  bottle
            description:  any type of water bottle sampling device Generic name for water collection device; usually used to determine temperature, salinity and provide water aliquots for measurement of a wide range of parameters; often referred to by a specific type of water sampling bottle, such as a Nansen or Niskin bottle.
        platform:  (MI_Platform)
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                code:  R/V THOMAS G. THOMPSON
            description:  Use this platform for data attributed to R/V Thomas G. Thompson that were collected between July 1991 and present. R/V Thomas G. Thompson (AGOR-23) Owned by US Navy, leased to University of Washington. Active dates: July 1991 (Source: http://www.navsource.org/archives/09/57/5723.htm, last accessed on 20 Dec 2011)
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