On the distribution of silicic acid as a frontal zone tracer in the Indian sector of the Southern Ocean
DOI:
https://doi.org/10.3989/scimar.1999.63n2121Keywords:
silicate, tracer, frontal zone, silicate-salinity diagram, Crozet Basin, Southern OceanAbstract
The subantarctic frontal zone surveyed during the April-May 1991 SUZIL cruise in the Crozet-Kerguelen-Amsterdam area shows a strong horizontal (north to south) gradient of dissolved silicate, increasing with depth, from 5 to 10 µmolSi kg-1 at 100 m, and 10 to 70 µmolSi kg-1 at 600 m. The northern limit of this frontal zone, which is formed by the confluence of the Subtropical and Subantarctic Fronts, is delimited at the surface by the 2 µmolSi kg-1 silicate isoline. Silicate-salinity diagrams also allow different water regimes to be positioned relative to the frontal zone. This sloping interface is between two water bodies, one to the north with more saline subtropical waters of less concentrated silicate than the southern one, corresponding to subantarctic waters which are less saline and richer in silicate. It is concluded that dissolved silicate can be used as a useful tracer of frontal zone water masses in the Indian sector of the Southern Ocean, providing a sound complement to other hydrographic data.
Downloads
Download data is not yet available.
Downloads
Published
1999-06-30
How to Cite
1.
Prego R, Park YH, Barciela MC, Morvan J, Poncin J, Tréguer P. On the distribution of silicic acid as a frontal zone tracer in the Indian sector of the Southern Ocean. scimar [Internet]. 1999Jun.30 [cited 2023Jun.8];63(2):121-7. Available from: https://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/843
Issue
Section
Articles
License
Copyright (c) 1999 Consejo Superior de Investigaciones Científicas (CSIC)

This work is licensed under a Creative Commons Attribution 4.0 International License.
© CSIC. Manuscripts published in both the printed and online versions of this Journal are the property of Consejo Superior de Investigaciones Científicas, and quoting this source is a requirement for any partial or full reproduction.All contents of this electronic edition, except where otherwise noted, are distributed under a “Creative Commons Attribution 4.0 International” (CC BY 4.0) License. You may read here the basic information and the legal text of the license. The indication of the CC BY 4.0 License must be expressly stated in this way when necessary.
Self-archiving in repositories, personal webpages or similar, of any version other than the published by the Editor, is not allowed.