Amazingly detailed compilation of the silicon cycle, with an emphasis on the oceanic silicon isotope budget

Although this article is not resulting from GEOTRACES activity, its content is definitely GEOTRACES relevant. The authors constructed an up-to-date compilation of the continental silicon (Si) cycle, including the fate of Si isotopic composition in the different continental but also estuarine and marine solid and solutions.

This is a paper highly recommended by Catherine Jeandel, the GEOTRACES IPO science director.

16 Frings
Figure: Cartoon schematic of the modern day global Si cycle. The values show the magnitudes of the fluxes (in 1012 mol yr− 1) and their associated δ30Si values (in ‰). Typical fractionations (ε, ‰) associated with production of biogenic silica (BSi) and clay minerals are shown in the inset panels. Dotted lines indicate particulate fluxes; solid lines indicate solute fluxes or transformations. Source: Frings, et al., 2016, Chemical Geology.

Reference:

Frings, P.J., Fontorbe, G., Clymans, W., De La Rocha, C.L., Conley, D.J., 2016. The continental Si cycle and its impact on the ocean Si isotope budget. Chemical Geology 425, 12-36.doi:10.1016/j.chemgeo.2016.01.020

Latest highlights

Science Highlights

Decline of the anthropogenic lead imprint to the ocean confirmed by data from the South West Atlantic Ocean

This study reveals that the mean lead concentrations in the surface waters of the western South Atlantic Ocean decreased by 34 % between the 1990s and 2011.

29.03.2023

Science Highlights

Irradiance-normalized non-photochemical quenching (NPQ): a new proxy of iron stress for phytoplankton

Ryan-Keogh and his colleagues used NPQ to fingerprint the photo-physiological response of phytoplankton to their environment.

06.03.2023

Science Highlights

Exhaustive modelling study of the oceanic neodymium parameters

The conclusion of this study reinforces the important role of the solid particles in driving the neodymium oceanic cycle.

02.03.2023

Science Highlights

Dissolved manganese distribution in the Arabian Sea reveals many variable triggers

Analysis of dissolved manganese on samples collected on GEOTRACES cruises allowed Singh and colleagues to establish its basin-wide distribution in the Arabian Sea.

01.03.2023

Rechercher