Dataset: Dissolved trace elements in profiles and surface waters collected during the Chinese GEOTRACES cruise (GP09) in the tropical northwest Pacific Ocean from April to June 2019

ValidatedFinal no updates expectedDOI: 10.26008/1912/bco-dmo.931959.1Version 1 (2024-07-10)Dataset Type:Cruise Results

Principal Investigator: Alan M. Shiller (University of Southern Mississippi)

Scientist: Melissa Gilbert (University of Southern Mississippi)

BCO-DMO Data Manager: Shannon Rauch (Woods Hole Oceanographic Institution)

Project: Dissolved trace elements in the tropical Northwest Pacific Ocean (Trace elements in NW Pacific)

Abstract

This is a study of dissolved trace elements in profiles and surface waters collected during the Spring 2019 Chinese GEOTRACES cruise (GP09) in the tropical northwest Pacific Ocean. GP09 afforded the opportunity to obtain trace element clean water samples (provided by the cruise organizers) from a region that is geologically complex as well as being a meeting place for various ocean currents and water masses. GP09 sampled the southwest corner of the North Pacific subtropical gyre, one of the larg...

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Sampling protocol: GEOTRACES protocols were followed and are briefly described in the cruise report: https://www.bodc.ac.uk/resources/inventories/cruise_inventory/report/17252/. Profile samples were collected using a clean rosette/CTD system using cleaned 12-liter (L) GO Niskin-X bottles. Water was filtered in a clean van through AcroPak 1000 cartridges. Clean surface water samples were obtained using a clean fish system similar to systems used on US GEOTRACES cruises. A 6-meter (m) boom kept the sampling system away from the ship and low-density polyethylene tubing was used to pump water to the clean van. Note that samples were collected and filtered by other GP09 scientists; we provided pre-cleaned bottles that were filled at sea and shipped to us.

Analytical protocol: We used high-resolution inductively coupled plasma mass spectrometry (ICP-MS) with calibration by isotope dilution, where possible. All elements except Mo and Ba were preconcentrated using a SeaFAST system. Mo and Ba were instead determined after 30-fold dilution in ultrapure water. See GEOTRACES Intercalibration Report (see Supplemental Files section of metadata) for details. Also see: Gilbert et al., 2023 (Ga); Ho et al., 2018 (Mo, V), Whitmore et al., 2022 (Ba); Rahman et al., 2022 (Ba); and Cao et al., 2024 (REEs).

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Related Publications

Methods
Cao, A., Liu, Q., Zhang, J., Shiller, A. M., Cai, Y., Zhang, R., Gilbert, M., Guo, X., & Liu, Z. (2024). Dissolved rare earth elements in the North Pacific Subtropical Gyre: Lithogenic sources and water mass mixing control. Geochimica et Cosmochimica Acta, 372, 42–61. https://doi.org/10.1016/j.gca.2024.02.018
Methods
Gilbert, M., Ho, P., Whitmore, L., & Shiller, A. (2023). Automated determination of gallium in seawater using seaFAST pre-concentration and high-resolution inductively-coupled plasma mass spectrometry. Analytica Chimica Acta, 1241, 340799. https://doi.org/10.1016/j.aca.2023.340799
Methods
Ho, P., Lee, J.-M., Heller, M. I., Lam, P. J., & Shiller, A. M. (2018). The distribution of dissolved and particulate Mo and V along the U.S. GEOTRACES East Pacific Zonal Transect (GP16): The roles of oxides and biogenic particles in their distributions in the oxygen deficient zone and the hydrothermal plume. Marine Chemistry, 201, 242–255. https://doi.org/10.1016/j.marchem.2017.12.003
Methods
Rahman, S., Shiller, A. M., Anderson, R. F., Charette, M. A., Hayes, C. T., Gilbert, M., Grissom, K. R., Lam, P. J., Ohnemus, D. C., Pavia, F. J., Twining, B. S., & Vivancos, S. M. (2022). Dissolved and Particulate Barium Distributions Along the US GEOTRACES North Atlantic and East Pacific Zonal Transects (GA03 and GP16): Global Implications for the Marine Barium Cycle. Global Biogeochemical Cycles, 36(6). Portico. https://doi.org/10.1029/2022gb007330
Methods
Whitmore, L. M., Shiller, A. M., Horner, T. J., Xiang, Y., Auro, M. E., Bauch, D., Dehairs, F., Lam, P. J., Li, J., Maldonado, M. T., Mears, C., Newton, R., Pasqualini, A., Planquette, H., Rember, R., & Thomas, H. (2022). Strong Margin Influence on the Arctic Ocean Barium Cycle Revealed by Pan‐Arctic Synthesis. Journal of Geophysical Research: Oceans, 127(4). Portico. https://doi.org/10.1029/2021jc017417

Shiller, A. M., Gilbert, M. (2024) Dissolved trace elements in profiles and surface waters collected during the Chinese GEOTRACES cruise (GP09) in the tropical northwest Pacific Ocean from April to June 2019. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-07-10 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.931959.1 [access date]

Terms of Use

This dataset is licensed under Creative Commons Attribution 4.0.


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Funded by the U.S. National Science Foundation