Dataset: Depth profiles of seawater dissolved 232Th, 230Th, and 231Pa from RVIB Nathaniel B. Palmer cruise NBP1702 from January to March 2017

Final no updates expectedDOI: 10.26008/1912/bco-dmo.813379.2Version 2 (2021-08-03)Dataset Type:Cruise Results

Principal Investigator: Robert F. Anderson (Lamont-Doherty Earth Observatory)

Co-Principal Investigator: Martin Q. Fleisher (Lamont-Doherty Earth Observatory)

Contact: Frank J. Pavia (Lamont-Doherty Earth Observatory)

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

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

Project: Water Mass Structure and Bottom Water Formation in the Ice-age Southern Ocean (GSc02) (SNOWBIRDS)

Abstract

This dataset contains depth profiles of seawater dissolved 232Th, 230Th, and 231Pa from cruise NBP1702 (GEOTRACES-compliant).

Cite Dataset

This dataset contains depth profiles of seawater dissolved 232Th, 230Th, and 231Pa from cruise NBP1702 (GEOTRACES-compliant).

Dataset Notes:
Radionuclide concentrations are given as micro-Becquerel (10-6 Bq, µBq or micro-Bq) per kg seawater for 230Th and 231Pa, and pmol (10-12 mol) per kg seawater for 232Th. A Becquerel is the SI unit for radioactivity and is defined as 1 disintegration per second. These units are recommended by the GEOTRACES community.

"Dissolved" (D) here refers to that which passed through a 0.45 µm AcropakTM 500 filter capsule sampled from conventional Niskin bottles.

For dissolved, seawater was weighed directly in the laboratory to determine sample size, taking into account acid added at sea. Concentrations below detection are listed as "bdl". The abbreviation "nd" refers to no data available.

Parameter names are adopted based on a recommendation from the GEOTRACES community (http://www.egeotraces.org/Parameter_Naming_Conventions.html).

This is data measured at Lamont-Doherty Earth Observatory of Columbia University (LDEO).

Related Datasets

No Related Datasets

Related Publications

General
Auro, M. E., Robinson, L. F., Burke, A., Bradtmiller, L. I., Fleisher, M. Q., & Anderson, R. F. (2012). Improvements to 232-thorium, 230-thorium, and 231-protactinium analysis in seawater arising from GEOTRACES intercalibration. Limnology and Oceanography: Methods, 10(7), 464–474. doi:10.4319/lom.2012.10.464
General
Cheng, H., Edwards, R. L., Hoff, J., Gallup, C. D., Richards, D. A., & Asmerom, Y. (2000). The half-lives of uranium-234 and thorium-230. Chemical Geology, 169(1-2), 17–33. doi:10.1016/s0009-2541(99)00157-6
Methods
Andersen, M. B., Stirling, C. H., Zimmermann, B., & Halliday, A. N. (2010). Precise determination of the open ocean 234U/238U composition. Geochemistry, Geophysics, Geosystems, 11(12), n/a–n/a. doi:10.1029/2010gc003318
Methods
Anderson, R. F., Fleisher, M. Q., Robinson, L. F., Edwards, R. L., Hoff, J. A., Moran, S. B., … Francois, R. (2012). GEOTRACES intercalibration of 230Th, 232Th, 231Pa, and prospects for 10Be. Limnology and Oceanography: Methods, 10(4), 179–213. doi:10.4319/lom.2012.10.179
Methods
Owens, S. A., Buesseler, K. O., & Sims, K. W. W. (2011). Re-evaluating the 238U-salinity relationship in seawater: Implications for the 238U–234Th disequilibrium method. Marine Chemistry, 127(1-4), 31–39. doi:10.1016/j.marchem.2011.07.005

Anderson, R. F., Fleisher, M. Q. (2021) Depth profiles of seawater dissolved 232Th, 230Th, and 231Pa from RVIB Nathaniel B. Palmer cruise NBP1702 from January to March 2017. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 2) Version Date 2021-08-03 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.813379.2 [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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