Wednesday, 27 April 2022

Underwater Avalanches

Turbidity currents are little understood, massive underwater avalanches (https://www.theguardian.com/science/2022/apr/27/massive-underwater-avalanches-deliver-pollutants-to-deep-sea). These turbidity currents are gravity-driven events, happening in a series of stages. They can carry more sediment into the deep sea, than the combined outputs of all the world's rivers. Turbidity current deposits (known as 'turbidites'), can be hundreds or even thousands of metres thick. A concern must be that these underwater avalanches can rapidly move plastic litter and other pollutants into the ocean depths. These accumulations could disturb entire marine ecosystems.

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