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Pandemic made 2020 'the year of the quiet ocean', say scientists | Oceans


“We’d like the word soundscape to become a lot better known. Sound is light in the oceans. It illuminates the ocean for many animals. They use it to communicate, to hunt, and can be harmed by noise at excess,” Ausubel said.
He and colleagues – including specialists at St Andrews – plan to expand the hydrophone network, particularly in the southern hemisphere, to more than 500 devices. Using modelling and data collaborations with shipping companies and other ocean users, they hope to produce a global map of ocean sound within the coming years. This should reveal important patterns, such as increases in noise along shipping lanes and near oilfields and windfarms, which could prove as important for ocean health and regulation as roadside air pollution monitoring, or water-contamination measurements near factories. ....

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Pandemic made 2020 'the year of the quiet ocean', say scientists

The Covid-19 lockdown has produced the quietest year for the world’s oceans in recent memory, according to a group of scientists working on a global map of underwater soundscapes. Noise pollution from ship engines, trawling activities, oil platforms, subsea mining and other human sources declined significantly last spring, say the researchers, who are part of a collaborative network of 231 non-military hydrophones. They believe the relative hush. ....

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