New map shows America’s quietest places | Science | AAAS

New map shows America's quietest places

SAN JOSE, CALIFORNIA—Craving some silence? Head (quietly) toward the blue regions on the map above. Based on 1.5 million hours of acoustical monitoring from places as remote as Dinosaur National Monument in Utah and as urban as New York City, scientists have created a map of noise levels across the country on an average summer day. After feeding acoustic data into a computer algorithm, the researchers modeled sound levels across the country including variables such as air and street traffic. Deep blue regions, such as Yellowstone National Park in Wyoming and the Great Sand Dunes National Park in Colorado, have background noise levels lower than 20 decibels—a silence likely as deep as before European colonization, researchers say. That’s orders of magnitude quieter than most cities, where noise levels average 50 to 60 decibels, scientists reported here today at the annual meeting of AAAS (which publishes Science). The National Park Service is using the map to identify places where humanmade noise is affecting wildlife—animals such bats and owls, whose ears are up to 20 decibels more sensitive than human ears, for example, are affected by humanmade noise because it drowns out the faint rustles of insects and rodents they need to hunt, they say.’

via New map shows America’s quietest places | Science | AAAS

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: