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Ocean scientists assess impact of seismic pulses in effort to protect whales

energy is much lower frequency than that, around five to 100 hertz, and the energy, or decibel, level of sound pulses drops sharply above that frequency.

Tolstoy says that ocean scientists take the threat to whales seriously. "Lamont-Doherty and the National Science Foundation, which funded our study, have already responded to the new data by adjusting the safety radius when they do research involving seismic sound generation," she says. "If a whale enters this radius, they shut down operations until it leaves."


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Contact: Harvey Leifert
hleifert@agu.org
202-777-7507
American Geophysical Union
26-Jul-2004


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