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© Woods Hole Oceanographic Institution © University of Washington |
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| Last updated May 2010 |
Travel time inversion of broadband data from Shallow Water 2006 experiments
Yong-Min Jiang and N. Ross Chapman
| This paper presents geoacoustic inversions of broadband signals collected by the L-shaped SWAMI32 during the Shallow Water 2006 Experiments. The L-shaped array was deployed in 70 m of water off the coast of New Jersey. The vertical leg of the array (VLA) has 10 even spaced sensors which expends 53.55 m in the water column, while the horizontal leg (GLS) has 20 uneven spaced bottom moored sensors that give 256.43 m of the aperture. An acoustic source was maintained at a depth of 35 m and towed along a circle around the VLA at a speed of 0.5 knots. The distance between the acoustic source and the VLA was around 190 m. Mid-frequency (1100-2900 Hz) chirps received at the VLA and HLA were analyzed for investigating the variability of the sea bottom properties around the circle. The data at the HLA were analyzed to assist the identification of the bottom layer structure while the data at VLA were employed to carry out the geoacoustic inversion. Environmental data collected in the vicinity were used ine inversion to account for the variable water column environment. [Work supported by ONR Ocean Acoustics.] |
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© Woods Hole Oceanographic Institution © University of Washington |
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| Last updated May 2010 |