Dataset: Inert copper and inorganic iodine concentrations from Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES PMT cruise (GP15, RR1815) on R/V Roger Revelle from Oct-Nov 2018

ValidatedFinal no updates expectedDOI: 10.26008/1912/bco-dmo.873193.3Version 3 (2025-04-21)Dataset Type:Cruise Results

Principal Investigator: James W. Moffett (University of Southern California)

Contact: Rintaro Moriyasu (University of Southern California)

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

Program: U.S. GEOTRACES (U.S. GEOTRACES)

Project: US GEOTRACES Pacific Meridional Transect (GP15) (U.S. GEOTRACES PMT)

Project: U.S. GEOTRACES PMT: Measurement of the organic complexation and chemical lability of dissolved copper using multiple techniques (PMT Copper)

Abstract

This dataset includes inert copper and inorganic iodine concentrations from Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES PMT cruise (GP15, RR1815), which was conducted on R/V Roger Revelle from October to November 2018. Iodate was analyzed on UV-Vis Spectrophotometer while Iodide was analyzed on the Hanging Mercury Drop Electrode with the Cathodic Square Wave Stripping Voltammetry setting. Inert copper was determined by Rintaro Moriyasu using the solvent extraction method pu...

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Cite Dataset

Iodate and Iodide were measured along the GEOTRACES GP15 transect aboard R/V Roger Revelle. Samples were collected using the GEOTRACES trace-metal clean rosette. For the purposes of preserving the speciation, all samples were immediately frozen at -20 °C and shipped back to the United States in a cooler, overnight. The samples were kept frozen until analysis, at which point, they were defrosted. Iodate was analyzed on UV-Vis Spectrophotometer while Iodide was analyzed on the Hanging Mercury Drop Electrode with the Cathodic Square Wave Stripping Voltammetry setting. Both methods were described previously in Moriyasu et al., (2020). Inert copper was determined by ligand exchange solvent extraction (Moriyasu & Moffett, 2022).

Related Datasets

Continues
Dataset: GP15 Inert Copper and Iodine Redox Speciation Leg 1
Relationship Description: GP15 was made up of two cruise legs, RR1814 (Leg 1) and RR1815 (Leg 2)
Moriyasu, R., Moffett, J. W. (2025) Inert copper and inorganic iodine concentrations from 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 3) Version Date 2025-04-21 doi:10.26008/1912/bco-dmo.873183.3

Related Publications

Methods
Moriyasu, R., & Moffett, J. W. (2022). Determination of inert and labile copper on GEOTRACES samples using a novel solvent extraction method. Marine Chemistry, 239, 104073. https://doi.org/10.1016/j.marchem.2021.104073
Methods
Moriyasu, R., Evans, Z. C., Bolster, K. M., Hardisty, D. S., & Moffett, J. W. (2020). The Distribution and Redox Speciation of Iodine in the Eastern Tropical North Pacific Ocean. Global Biogeochemical Cycles, 34(2). doi:10.1029/2019gb006302

Moriyasu, R., Moffett, J. W. (2025) Inert copper and inorganic iodine concentrations from Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES PMT cruise (GP15, RR1815) on R/V Roger Revelle from Oct-Nov 2018. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 3) Version Date 2025-04-21 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.873193.3 [access date]

Terms of Use

This dataset is licensed under Creative Commons Attribution 4.0.


If you wish to use this dataset, it is highly recommended that you contact the original principal investigators (PI). Should the relevant PI be unavailable, please contact BCO-DMO (info@bco-dmo.org) for additional guidance. For general guidance please see the BCO-DMO Terms of Use document.

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Funded by the U.S. National Science Foundation