Scientists have discovered “dark oxygen” being produced in the deep ocean, apparently by lumps of metal on the seafloor

  • Thread starter Thread starter geordief
  • Start date Start date
  • Tags Tags
    Ocean Oxygen
Click For Summary
SUMMARY

Recent research has identified the production of "dark oxygen" in the deep ocean, attributed to polymetallic nodules on the abyssal seafloor. The study, published in Nature, suggests that high voltage potentials (up to 0.95 V) on the surfaces of these nodules may facilitate seawater electrolysis, leading to increased oxygen levels. This discovery highlights the significant role of these metal-rich formations in oceanic biogeochemical processes.

PREREQUISITES
  • Understanding of seawater electrolysis mechanisms
  • Familiarity with polymetallic nodules and their composition
  • Knowledge of oceanic biogeochemical cycles
  • Basic principles of electrochemistry
NEXT STEPS
  • Research the electrochemical properties of polymetallic nodules
  • Explore the implications of seawater electrolysis on marine ecosystems
  • Investigate the role of deep-sea mining in the context of these findings
  • Study the effects of increased oxygen levels on oceanic life forms
USEFUL FOR

Marine scientists, oceanographers, environmental researchers, and policymakers interested in deep-sea ecosystems and the implications of metal-rich formations on ocean health.

Earth sciences news on Phys.org
geordief said:
https://www.bbc.com/news/articles/c728ven2v9eo

and the other main news websites.

Does anyone have any idea what mechanisms could be involved?
There is an associated paper

https://www.nature.com/articles/s41561-024-01480-8

From the abstract

"(increased O2) we attribute to the polymetallic ( polymetallic nodule-covered abyssal seafloor) 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."
 
Last edited:
  • Like
Likes   Reactions: Astranut and geordief

Similar threads

  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 37 ·
2
Replies
37
Views
9K
  • · Replies 4 ·
Replies
4
Views
1K
  • · Replies 7 ·
Replies
7
Views
3K
  • · Replies 4 ·
Replies
4
Views
2K
Replies
5
Views
3K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 62 ·
3
Replies
62
Views
11K