Beneath the Sea, Recognizing the Need to Turn Down the Volume

Humans are a noisy lot. In addition to fouling our cities with extreme sounds and exporting our din to wilderness areas, scientists are beginning to recognize and map the substantial impact of human-generated sound on the world's waters.

For years, we've been hearing about noise pollution threatening the quality of life in our cities and the supposed silence of remote landscapes. Lest we become deaf to the full impact of our own cacophony, "the federal government is completing the first phase of what could become one of the world’s largest efforts to curb the noise pollution and return the sprawling [undersea] ecosystem to a quieter state," reports William J. Broad. Ironically, some of the most significant components of that effort are visualizations of the audible world.

"The project, by the National Oceanic and Atmospheric Administration, seeks to document human-made noises in the ocean and transform the results into the world’s first large sound maps," writes Broad. "The ocean visualizations use bright colors to symbolize the sounds radiating out through the oceanic depths, frequently over distances of hundreds of miles."

"Michael Jasny, a senior policy analyst with the Natural Resources Defense Council, a private group in New York that has sued the Navy to reduce sounds that can harm marine mammals, praised the maps as 'magnificent' and their depictions of sound pollution as 'incredibly disturbing.'”

“We’ve been blind to it,” Mr. Jasny said in an interview. “The maps are enabling scientists, regulators and the public to visualize the problem. Once you see the pictures, the serious risk that ocean noise poses to the very fabric of marine life becomes impossible to ignore.”

"Legal experts say the new findings are likely to accelerate efforts both domestically and internationally to deal with the complicated problem through laws, regulations, treaties and voluntary noise reductions."

Full Story: A Rising Tide of Noise Is Now Easy to See


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