| Presentation | 2009-08-28 Estimation of propagated sound fluctuation in coastal water Hiroyuki HACHIYA, Tadashi YAMAGUCHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The development of coastal acoustic tomography is carried out as a long term measurement technique to get shallow water information. Since the sound is propagated with reflection at sea bed and sea surface, it is important to estimate the characteristics of the coastal water. In this report, we investigated acoustic characteristics using data of a reciprocal acoustic transmission experiment in Uchiura Bay. Direct ray were used to estimate amplitude and phase variation. We observed temporal fluctuation of sound propagation in complex plane. We observed that an amplitude and phase fluctuation happened with a rapid change of travel time. Using Rice distribution, we can estimate the ratio of incoherent component quantitatively. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | coastal water / reciprocal sound propagation / bottom and surface reflected wave / ocean acoustic tomography / Rice distribution |
| Paper # | US2009-35 |
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| Conference Information | |
| Committee | US |
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| Conference Date | 2009/8/21(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Ultrasonics (US) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Estimation of propagated sound fluctuation in coastal water |
| Sub Title (in English) | |
| Keyword(1) | coastal water |
| Keyword(2) | reciprocal sound propagation |
| Keyword(3) | bottom and surface reflected wave |
| Keyword(4) | ocean acoustic tomography |
| Keyword(5) | Rice distribution |
| 1st Author's Name | Hiroyuki HACHIYA |
| 1st Author's Affiliation | Graduate School of Science and Engineering, Tokyo Institute of Technology() |
| 2nd Author's Name | Tadashi YAMAGUCHI |
| 2nd Author's Affiliation | Research Center for Frontier Medical Engineering, Ciba University |
| Date | 2009-08-28 |
| Paper # | US2009-35 |
| Volume (vol) | vol.109 |
| Number (no) | 180 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |