Tag Archives: Ocean Noise
Dead plankton, stunned fish: the harms of man-made ocean noise
Human-caused ocean noise and its dangers to marine life are the focus of meetings at the United Nations this week, a victory for advocacy groups that have long warned of this problem. What are the causes of ocean noise? The main human activity that causes noise is maritime shipping. Among the loudest sounds are explosions aimed at demolishing offshore oil platforms, though these events are rare. Advocacy groups focus on seismic airguns, which are used by oil and gas interests to find reserves on the ocean floor. A boat tows 12-48 airguns at a time, each of which shoot loud blasts of compressed air. >click to read<15:27
NOAA’s Next Big Thing? Ocean Noise – Cracking down on noise-making activities in the ocean. $$$$!
The ocean has gotten noisier for decades, with man-made racket from oil drilling, shipping and construction linked to signs of stress in marine life that include beached whales and baby crabs with scrambled navigational signals. The United States aims to change that as a federal agency prepares a plan that could force reductions in noise-making activities, including oil exploration, dredging and shipping off the nation’s coast. “We’ve been worried about ocean noise for decades, since the 1970s,” said Richard Merrick, chief science adviser to the National Oceanographic and Atmospheric Administration (NOAA) fisheries agency and a key author of the agency’s more detailed 10-year plan to be released publicly later this year. “The question is, what should we do now?” The draft plan calls for developing noise limits and setting up a standardised listening system. It would also call for the creation of an online archive of noise data that could hold thousands of hours of recordings, which scientists could then cross-reference against data on where marine life congregates. Read the rest here 13:54
