Dataset: Particulate Th-234 collected using large volume McLane pumps (LVPs) as part of the EAGER chief scientist training cruise (KM1910) at Station ALOHA, subtropical North Pacific gyre in June 2019

Final no updates expectedDOI: 10.26008/1912/bco-dmo.854150.1Version 1 (2021-07-13)Dataset Type:Cruise Results

Principal Investigator: Matthew J. Church (University of Montana)

Co-Principal Investigator: Sara Ferrón (University of Hawaiʻi at Mānoa)

Co-Principal Investigator: Erica Goetze (University of Hawaiʻi at Mānoa)

Co-Principal Investigator: Angelicque E. White (University of Hawai'i)

Scientist, Contact: Erin E. Black (Columbia University)

Student, Contact: Jennifer Kenyon (Woods Hole Oceanographic Institution)

BCO-DMO Data Manager: Taylor Heyl (Woods Hole Oceanographic Institution)

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


Project: EAGER Collaborative Research: Early career chief scientist training for biological and chemical oceanographers (Chief Sci KM1910)


Abstract

This dataset includes particulate Th-234 collected using large volume McLane pumps (LVPs) as part of the EAGER chief scientist training cruise at Station ALOHA in the subtropical North Pacific gyre in June 2019.

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In-situ particulate material was collected using McLane pumps. All thorium data were decay-corrected back to mid-pumping times. See Pike et al., 2005 and Clevenger et al., 2021 for detailed methods and counting techniques.

>51 micrometer (µm) Th-234 (LSF, large particulate Thorium): The entire 142 millimeter (mm) mesh screen was rinsed onto a 25 mm silver filter and dried in a low temperature oven before beta counting. The mean volume pumped through the 142 mm mesh screens was ~640 liters (L).

1-51 micrometer (µm) Th-234 (SSF, small particulate Thorium): Whole 142 mm QMAs, located below the mesh screen in the filter head housing, were dried in a low temperature oven. A 25 mm subsample was taken from this 142 mm filter for beta counting for Th-234.


Related Datasets

IsRelatedTo

Dataset: Particulate Thorium-234 Flux
Kenyon, J., Black, E., Church, M. J. (2021) Particulate Th-234 collected with surface-tethered sediment traps at Station ALOHA as part of the EAGER chief scientist training cruise (KM1910) in the subtropical North Pacific gyre in June 2019. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2021-07-20 doi:10.26008/1912/bco-dmo.854241.1

Related Publications

Results

Winn, C., C. Sabine, D. Hebel, F. Mackenzie and D. M. Karl. (1991) Inorganic carbon system dynamics in the central Pacific Ocean: Results of the Hawaii Ocean Time-series program. EOS, Transactions of the American Geophysical Union 72, 70.
Methods

Clevenger, S. J., Benitez-Nelson, C. R., Drysdale, J., Pike, S., Puigcorbé, V., & Buesseler, K. O. (2021). Review of the analysis of 234Th in small volume (2–4 L) seawater samples: improvements and recommendations. Journal of Radioanalytical and Nuclear Chemistry, 329(1), 1–13. https://doi.org/10.1007/s10967-021-07772-2
Methods

Pike, S. M., Buesseler, K. O., Andrews, J., & Savoye, N. (2005). Quantification of 234Th recovery in small volume sea water samples by inductively coupled plasma-mass spectrometry. Journal of Radioanalytical and Nuclear Chemistry, 263(2), 355–360. doi:10.1007/s10967-005-0062-9