Surface gravity waves and their acoustic signatures, 1–30 Hz, on the mid-Pacific sea floor
WE Farrell, W Munk - The Journal of the Acoustical Society of America, 2013 - pubs.aip.org
In 1999, Duennebier et al. deployed a hydrophone and geophone below the conjugate
depth in the abyssal Pacific, midway between Hawaii and California. Real time data were
transmitted for 3 yr over an abandoned ATT cable. These data have been analyzed in the
frequency band 1 to 30 Hz. Between 1 and 6 Hz, the bottom data are interpreted as acoustic
radiation from surface gravity waves, an extension to higher frequencies of a non-linear
mechanism proposed by Longuet-Higgins in 1950 to explain microseisms. The inferred …
depth in the abyssal Pacific, midway between Hawaii and California. Real time data were
transmitted for 3 yr over an abandoned ATT cable. These data have been analyzed in the
frequency band 1 to 30 Hz. Between 1 and 6 Hz, the bottom data are interpreted as acoustic
radiation from surface gravity waves, an extension to higher frequencies of a non-linear
mechanism proposed by Longuet-Higgins in 1950 to explain microseisms. The inferred …
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