from Hacker News

Kīlauea volcano eruption fosters algae bloom in North Pacific Ocean

by curtis on 9/10/19, 3:18 AM with 8 comments

• by opwieurposiu on 9/10/19, 3:17 PM

  Pumping nutrient rich water from the deep ocean to the surface is one proposed way of increasing ocean productivity to repair fish stocks and sequester carbon.

  This volcano has provided a natural demonstration of this effect.

  https://en.wikipedia.org/wiki/Ocean_fertilization

• by catwind7 on 9/10/19, 12:59 PM

  very interesting! could someone explain why the hot water would lead to deep, cold water being brought to the surface? I thought hot water is less dense than cold water. Wouldn't it just sit on the surface for a long time?

  Or is there just such a large amount of this extremely hot water that the mixing overtime generates movement across the board?