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Deep sea mining is the extraction of minerals from the seabed of the deep sea. The main ores of commercial interest are polymetallic nodules , which are found at depths of 4–6 km (2.5–3.7 mi) primarily on the abyssal plain .
Very little is known about deep sea ecosystems or the potential impacts of deep-sea mining. Polymetallic nodule fields are hotspots of abundance and diversity for a highly vulnerable abyssal fauna, much of which lives attached to nodules or in the sediment immediately beneath it.
The production of oxygen at the seafloor by polymetallic nodules is a new ecosystem function that needs to be considered when assessing the impact of deep-sea mining.
A documentary about deep-sea mining that Sweetman watched in a hotel bar in São Paulo, Brazil, unleashed a breakthrough. ... or deep-sea, nodules are producing oxygen is “an amazing and ...
Model of seabed mining technology. Seabed mining, also known as Seafloor mining [1] is the recovery of minerals from the seabed by techniques of underwater mining. The concept includes mining at shallow depths on the continental shelf and deep-sea mining at greater depths associated with tectonic activity, hydrothermal vents and the abyssal plains.
Deep sea mining involves removing mineral deposits and metals from the ocean’s seabed. ... taking deposit-rich polymetallic nodules off the ocean floor, mining massive seafloor sulphide deposits ...
It seems that polymetallic nodules in the region, the target of much deep-sea mining, are crucial for fostering a high level of biodiversity on the sea floor. Even so, there are many gaps in the current understanding of the ecosystem roles played, life history traits, sensitivities, spatial or temporal variabilities, and resilience of these ...
The International Seabed Authority is working to set regulations for deep-sea mining as companies engaged in the clean energy transition clamor for more minerals. The seafloor, especially in parts ...