“It is desirable that the oceans are so dynamic and variable; other regions have other personalities depending on the herbal and human interactions that occur in those waters,” said Jennifer Miksis-Olds, professor of studies and director of the UNH Center for Acoustic Research and Education.
In the study, published recently in the Journal of the Acoustical Society of America Express Letters, researchers focused on seven offshore sites that geographically cover the outer continental shelf from Virginia to Florida, places where hydrophones were placed on the seafloor in 2017 and then recovered in 2021 as a component of UNH’s Atlantic Deep-Sea Ecosystem Observatory Network.
The knowledge indicated that while the noise of advertising boats has decreased, there has been an increase in noise from other boats, such as fishing boats and pleasure boats. The net result: there is no main difference in the underwater soundscape about 45-280 miles offshore. .
“Having this long-term time series was critical because it allowed for a direct comparison of years of knowledge before COVID-19 hit,” Miksis-Olds said. “Acoustic measurements in the deep ocean are rarer than in coastal waters, so it gives some other attitude about how the deep oceans have been affected, or not, by COVID-19. “
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