Ocean acoustic remote sensing using ambient noise: results from the Florida Straits

Brown, M.G.; Godin, O.A.; Zang, X.; Ball, J.S.; Zabotin, N.A.; Zabotina, L.Y.; Williams, N.J.

doi:10.1093/gji/ggw170

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Ocean acoustic remote sensing using ambient noise: results from the Florida Straits

2016
By Brown, M.G. ; Godin, O.A. ; Zang, X. ; ...
Source: Geophysical Journal International, 206(1), 574-589.

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Journal Title:

Geophysical Journal International
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Brown, M.G. ; Godin, O.A. ; Zang, X. ; Ball, J.S. ; Zabotin, N.A. ; ... More +

Brown, M.G. ; Godin, O.A. ; Zang, X. ; Ball, J.S. ; Zabotin, N.A. ; Zabotina, L.Y. ; Williams, N.J. Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; PSL (Physical Sciences Laboratory) ; ESRL (Earth System Research Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences)

OAR (Oceanic and Atmospheric Research) ; PSL (Physical Sciences Laboratory) ; ESRL (Earth System Research Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences) Less -
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Noise interferometry is the process by which approximations to acoustic Green's functions, which describe sound propagation between two locations, are estimated by cross-correlating time series of ambient noise measured at those locations. Noise-interferometry-based approximations to Green's functions can be used as the basis for a variety of inversion algorithms, thereby providing a purely passive alternative to active-source ocean acoustic remote sensing. In this paper we give an overview of results from noise interferometry experiments conducted in the Florida Straits at 100 m depth in December 2012, and at 600 m depth in September/October 2013. Under good conditions for noise interferometry, estimates of cross-correlation functions are shown to allow one to perform advanced phase-coherent signal processing techniques to perform waveform inversions, estimate currents by exploiting non-reciprocity, perform time-reversal/back-propagation calculations and investigate modal dispersion using time-warping techniques. Conditions which are favourable for noise interferometry are identified and discussed.
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Geophysical Journal International, 206(1), 574-589.
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https://doi.org/10.1093/gji/ggw170
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Journal Article
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CC BY
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urn:sha256:6366ddb44fd9f96843f67097f193286fb2b871733c8edad082435842620b4897
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Ocean acoustic remote sensing using ambient noise: results from the Florida Straits

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