Sound Scattering from Microbubble Distributions Near the Sea Surface
Backscatter from the sea surface is thought to be governed by the roughness of the surface and subsurface bubble distributions. At low frequencies, due to the paucity of large bubbles, scattering results primarily from coherent and/or collective scatter from bubbles entrained by the subsurface vorti...
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| Format: | Book section |
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Kluwer Academic Publishers
1993
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| _version_ | 1797070212680384512 |
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| author | Carey, WM Roy, RA |
| author2 | Ellis, DD |
| author_facet | Ellis, DD Carey, WM Roy, RA |
| author_sort | Carey, WM |
| collection | OXFORD |
| description | Backscatter from the sea surface is thought to be governed by the roughness of the surface and subsurface bubble distributions. At low frequencies, due to the paucity of large bubbles, scattering results primarily from coherent and/or collective scatter from bubbles entrained by the subsurface vorticity or carried to depth by the Langmuir circulation and thermal convection. It is shown that scattering from compact regions is a function of the volume fraction of air and to first order can be described by a Minnaert formula modified with the volume fraction. Measurement of sound scattering from a submerged cloud of bubbles produces low-frequency peaks with large low-frequency target strength consistent with this theory. |
| first_indexed | 2024-03-06T22:35:40Z |
| format | Book section |
| id | oxford-uuid:59ce7d8e-004c-421e-8fb2-60cbfd5d20c3 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T22:35:40Z |
| publishDate | 1993 |
| publisher | Kluwer Academic Publishers |
| record_format | dspace |
| spelling | oxford-uuid:59ce7d8e-004c-421e-8fb2-60cbfd5d20c32022-03-26T17:11:54ZSound Scattering from Microbubble Distributions Near the Sea SurfaceBook sectionhttp://purl.org/coar/resource_type/c_3248uuid:59ce7d8e-004c-421e-8fb2-60cbfd5d20c3Symplectic Elements at OxfordKluwer Academic Publishers1993Carey, WMRoy, RAEllis, DDPreston, JRUrban, HGBackscatter from the sea surface is thought to be governed by the roughness of the surface and subsurface bubble distributions. At low frequencies, due to the paucity of large bubbles, scattering results primarily from coherent and/or collective scatter from bubbles entrained by the subsurface vorticity or carried to depth by the Langmuir circulation and thermal convection. It is shown that scattering from compact regions is a function of the volume fraction of air and to first order can be described by a Minnaert formula modified with the volume fraction. Measurement of sound scattering from a submerged cloud of bubbles produces low-frequency peaks with large low-frequency target strength consistent with this theory. |
| spellingShingle | Carey, WM Roy, RA Sound Scattering from Microbubble Distributions Near the Sea Surface |
| title | Sound Scattering from Microbubble Distributions Near the Sea Surface |
| title_full | Sound Scattering from Microbubble Distributions Near the Sea Surface |
| title_fullStr | Sound Scattering from Microbubble Distributions Near the Sea Surface |
| title_full_unstemmed | Sound Scattering from Microbubble Distributions Near the Sea Surface |
| title_short | Sound Scattering from Microbubble Distributions Near the Sea Surface |
| title_sort | sound scattering from microbubble distributions near the sea surface |
| work_keys_str_mv | AT careywm soundscatteringfrommicrobubbledistributionsneartheseasurface AT royra soundscatteringfrommicrobubbledistributionsneartheseasurface |