While biologists sort out what levels of noise go unnoticed, are annoying or cause harm to marine mammals, physical oceanographer Jeff Nystuen is giving scientists and managers a way to sift through and identify the sounds present in various marine ecosystems.
Nystuen, from the University of Washingtons Applied Physics Laboratory, presented his latest findings this week at the Ocean Sciences Meeting in Honolulu.
Knowing what sound is already there is needed when trying to establish noise regulations. Someday activities may be modified in zones that have troubling noise levels. "For example, when a lot of whales are present you just might say, Lets wait until tomorrow to do this," Nystuen says.
Sandra Hines | EurekAlert!
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Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
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