Influence of sound speed profile on source localization at different depths. (English) Zbl 1370.86006
Summary: The effect of sound speed profile (SSP) mismatch on source localization in shallow-water waveguides with a typical negative gradient (or thermocline) is studied numerically and experimentally. The results are interpreted using a normal mode model and a ray model. It is found that a matched-field processor is insensitive to SSP mismatch for sources above the thermocline. In addition, the sensitivity of the processor to SSP mismatch increases with the depth of sources above the thermocline.
MSC:
| 86-08 | Computational methods for problems pertaining to geophysics |
| 76Q05 | Hydro- and aero-acoustics |
| 86A05 | Hydrology, hydrography, oceanography |
| 76B15 | Water waves, gravity waves; dispersion and scattering, nonlinear interaction |
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