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Sea foam washed up or blown onto a beach. Sea foam, ocean foam, beach foam, or spume is a type of foam created by the agitation of seawater, particularly when it contains higher concentrations of dissolved organic matter (including proteins, lignins, and lipids) derived from sources such as the offshore breakdown of algal blooms. [1]
The deep carbon cycle is the movement of carbon through the Earth's mantle and core. It forms part of the carbon cycle and is intimately connected to the movement of carbon in the Earth's surface and atmosphere. By returning carbon to the deep Earth, it plays a critical role in maintaining the terrestrial conditions necessary for life to exist.
The deep sea remains poorly understood, with limited baseline data on its biodiversity and environmental conditions. [5] Many species are slow-growing and highly sensitive to disturbance, and the long-term impacts of mining activities, such as habitat destruction, sediment plumes, and noise pollution , remain difficult to predict. [ 6 ]
In other words, it is a biologically mediated process which results in the sequestering of carbon in the deep ocean away from the atmosphere and the land. The biological pump is the biological component of the "marine carbon pump" which contains both a physical and biological component.
The surface ocean engages in air-sea interactions and absorbs carbon dioxide (CO 2) from the atmosphere, making the ocean the Earth's largest sink for atmospheric CO 2. Carbon dioxide dissolves in and reacts with seawater to form carbonic acid. Subsequent reactions then produce carbonate (CO 3 2−), bicarbonate (HCO 3 −), and hydrogen (H ...
The carbon dioxide dissolved into surface waters before the hydrate was able to sink to the deep ocean (10–55% of carbon dioxide remained stuck to the hydrate at depths of 1500m into the ocean). [19] In laboratory experiments, continuous streams of hydrates have not yet been achieved. [12]
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