A Lagrangian View of Trace Elements and Isotopes in the North Pacific
Name
JGR Oceans - 2020 - Hayes - A Lagrangian View of Trace Elements and Isotopes in the North Pacific.pdf
Description
Published version
Size
4.35 MB
Format
Adobe PDF
Checksum (MD5)
0b4553b6ea65c1673fdcf1564c74f4cc
Author(s)
Hayes, Christopher T
Fitzsimmons, Jessica N
Jensen, Laramie T
Lanning, Nathan T
Hatta, Mariko
McGee, David
Boyle, Edward A
Date Issued
March 3, 2020
Journal
Journal of Geophysical Research: Oceans
Publisher
American Geophysical Union
Citation
Hayes, C. T., Fitzsimmons, J. N., Jensen, L. T., Lanning, N. T., Hatta, M., McGee, D., & Boyle, E. A. (2020). A Lagrangian view of trace elements and isotopes in the North Pacific. Journal of Geophysical Research: Oceans, 125, e2019JC015862.
Version
Final published version
Abstract
Ocean time-series sites are influenced by both temporal variability, as in situ conditions change, as well as spatial variability, as water masses move across the fixed observation point. To remove the effect of spatial variability, this study made sub-daily Lagrangian observations of trace elements and isotopes (Al, Sc, Mn, Fe, Co, Ni, Cu, Zn, Cd, Pb, 232Th, and 230Th) in surface water over a 12-day period (July–August 2015) in the North Pacific near the Hawaii Ocean Time-series Station ALOHA. Additionally, a vertical profile in the upper 250 m was analyzed. This dataset is intercalibrated with GEOTRACES standards and provides a consistent baseline for trace element studies in the oligotrophic North Pacific. No diel changes in trace elements could be resolved, although day-to-day variations were resolved for some elements (Fe, Cu, and Zn), which may be related to organic matter cycling or ligand availability. Pb concentrations remained relatively constant during 1997–2015, presenting a change from previous decreases. Nutrient to trace element stoichiometric ratios were compared to those observed in phytoplankton as an indication of the extent of biological trace element utilization in this ecosystem, providing a basis for future ecological trace element studies.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1029/2019jc015862
