Monitoring baseline ocean noise is critically important to understand both natural and anthropogenic changes in the marine ambient sound environment. As of this week, a network of 11 ocean noise reference stations has been established in U.S. waters to measure changes and trends in natural and man-made ocean noise. Natural sounds ranging from whale calls and volcanoes to anthropogenic sounds from shipping and oil/gas exploration are recorded by the moored, underwater hydrophones developed by PMEL engineers and scientists and deployed in collaboration with NMFS-OST, all the Fisheries Science Centers, NOS Marine Sanctuaries, and the National Park Service. The establishment of a long-term record provides fundamental data needed to understand how increased noise in the ocean may affect marine life and ocean health.
PMEL in the News
“The World’s Changing Oceans” will be the theme when five national experts give presentations this week at the annual Donnel Foster Hewett Lecture Series sponsored by the department of earth and environmental sciences.
From the peaks of the Cascades and Olympics to the saltwater of the Sound, climate shapes the physical landscape of the Puget Sound region and where and how people, plants and animals inhabit that landscape.
Each year, about 60,000 people and $4 billion (US$) in assets are exposed to the global tsunami hazard. Accurate and reliable tsunami warning systems provide a significant defense for this hazard. In this paper, Drs. Eddie Bernard and Vasily Titov (NOAA Center for Tsunami Research/Pacific Marine Environmental Laboratory) explore the evolution of science and technology used in tsunami warning systems and the evolution of their products using warning technologies. They suggest future... more