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The Thermodynamic Controls on Sulfide Saturation in Silicate Melts with Application to Ocean Floor Basalts

Abstract.

"A thermodynamic model to calculate the sulfide content at sulfide saturation or SCSS of basaltic and intermediate composition silicate melts has been built from four independently measurable thermodynamic entities, namely the standard state Gibbs free energy of the saturation reaction, the “sulfide capacity”, and the activities of FeO in[...]"

 

Source: AGU- Advancing Earth and Space Science 
Authors: Daniel R. Neuville et al.
DOI: https://doi.org/10.1002/9781119473206.ch10

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Oxygen loss in fjords, coastal areas, and open ocean systems

Abstract.

"Loss of oxygen and expansion of oxygen depleted environments have been witnessed in both coastal and open-ocean systems since the middle of the 20th century, and ocean modelling predicts continuing decease by the year 2100. Oxygen depletion occurs thus during the same time epoch as global warming. Increased knowledge on how and why oxygen varies in space and time shapes the biogeochemical and ecological structure of marine systems and will be needed for future predictions of marine productivity. In coastal systems deoxygenation is also linked to human activities that lead to increased loadings of nutrients and organic matter, and to regional effects of climate induced changes in wind and precipitation patterns[...]"

 

Source: BJERKNES CENTRE
Authors: Anne Gro Vea Salvanes et al.
 

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