INVESTABLE OCEANS
INVESTABLE OCEANS

Evidence of dark oxygen production at the abyssal seafloor

• Andrew K. Sweetman, et al., Nature Geoscience

Evidence of dark oxygen production at the abyssal seafloor
Jonathan Borba, Unsplash

Here we report such experiments at the polymetallic nodule-covered abyssal seafloor in the Pacific Ocean in which oxygen increased over two days to more than three times the background concentration, which from ex situ incubations we attribute to the polymetallic nodules. Given high voltage potentials (up to 0.95 V) on nodule surfaces, we hypothesize that seawater electrolysis may contribute to this dark oxygen production.

Read the full paper here. 

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