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| Presentation | 2019-01-22 10:30 [Poster Presentation] Acoustic numerical simulation considering non-linearity for analysis of effects of air gun on marine mammals Koryu Mineshima, Shunichi Fujii, Kotaro Hoshiba, Takenobu Tsuchiya, Nobuyuki Endoh (Kanagawa Univ.)  US2018-86 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The air gun used for seabed resource exploration is the sound source of high-pressure and low-frequency. Therefore, high-pressure and low-frequency sound wave will propagate through the ocean and adversely affect marine mammals. It is known that the high-pressure sound wave due to the nonlinear propagation phenomenon, and harmonics are generated in addition to the fundamental wave. In this paper, sound propagation analysis is performed using the nonlinear WE-FDTD method, and the analysis result is compared with the linear WE-FDTD method. Next, the sound pressure of the sound source in the nonlinear WE-FDTD method was changed. As a result, it was confirmed that harmonics are generated the air gun even with a high-pressure and low-frequency sound source. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | WE-FDTD method / air-gun / seabed resource exploration / nonlinear propagation / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 118, no. 409, US2018-86, pp. 35-38, Jan. 2019. | |
| Paper # | US2018-86 | |
| Date of Issue | 2019-01-15 (US) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | US2018-86 |
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| Conference Information | |
| Committee | EA US |
| Conference Date | 2019-01-22 - 2019-01-23 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Doshisha Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | [Joint Meeting on Acoustics and Ultrasonics Subsociety] Engineering/Electro Acoustics, Ultrasonics, and Related Topics |
| Paper Information | |
| Registration To | US |
| Conference Code | 2019-01-EA-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Acoustic numerical simulation considering non-linearity for analysis of effects of air gun on marine mammals |
| Sub Title (in English) | |
| Keyword(1) | WE-FDTD method |
| Keyword(2) | air-gun |
| Keyword(3) | seabed resource exploration |
| Keyword(4) | nonlinear propagation |
| Keyword(5) | |
| Keyword(6) | |
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| 1st Author's Name | Koryu Mineshima |
| 1st Author's Affiliation | Kanagawa University (Kanagawa Univ.) |
| 2nd Author's Name | Shunichi Fujii |
| 2nd Author's Affiliation | Kanagawa University (Kanagawa Univ.) |
| 3rd Author's Name | Kotaro Hoshiba |
| 3rd Author's Affiliation | Kanagawa University (Kanagawa Univ.) |
| 4th Author's Name | Takenobu Tsuchiya |
| 4th Author's Affiliation | Kanagawa University (Kanagawa Univ.) |
| 5th Author's Name | Nobuyuki Endoh |
| 5th Author's Affiliation | Kanagawa University (Kanagawa Univ.) |
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| Speaker | Author-1 |
| Date Time | 2019-01-22 10:30:00 |
| Presentation Time | 120 minutes |
| Registration for | US |
| Paper # | US2018-86 |
| Volume (vol) | vol.118 |
| Number (no) | no.409 |
| Page | pp.35-38 |
| #Pages | 4 |
| Date of Issue | 2019-01-15 (US) |
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