2006 Fiscal Year Final Research Report Summary
Development of autonomous acoustic observation system using click sounds emitted by small cetacean and field experiments
| Project/Area Number |
16404021
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Naval and maritime engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
NOSE Yoshiaki The University of Tokyo, Institute of Industrial Science, Research Associate, 生産技術研究所, 助手 (10114604)
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| Co-Investigator(Kenkyū-buntansha) |
URA Tamaki The University of Tokyo, Institute of Industrial Science, Professor, 生産技術研究所, 教授 (60111564)
ASADA Akira The University of Tokyo, Institute of Industrial Science, Professor, 生産技術研究所, 教授 (60323648)
SUGIMATSU Harumi The University of Tokyo, Institute of Industrial Science, Research Fellow, 生産技術研究所, 特定プロジェクト研究員 (90436577)
KOJIMA Junichi KDDI R&D Laboratories Inc., Project leader, プロジェクト・リーダー (50416575)
YANAGISAWA Masao Waseda University, School of Science and Engineering, Professor, 理工学部, 教授 (30170781)
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| Project Period (FY) |
2004 – 2006
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| Keywords | Small Odontoceti species / River dolphin / Ganges river dolphin / Baiji / High frequency / Click / Beam form / Hydrophone array |
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| Research Abstract |
In this research, we proposed an advanced autonomous acoustic observation system using click sounds emitted by small Odontoceti species such as the Irrawaddy dolphin and the Ganges river dolphin. These species are endangered because of environmental change due to human activities. Understanding their population and underwater behavior is important to examine the methods to preserve them, so that we developed the multi-hydrophone array system which can detect their location of clicks source using LBL system and SBL system and record them. Thus, we can achieve dolphin's 3D-locationos in semi-real time. Then, by analyzing the data in off-line, we can identify more detailed location and bio-sonar characteristics of dolphins to know their underwater behavior
After testing the array targeting the finless porpoise which belongs to Odontoceti species and inhabits Japanese costal area, we brought it to India in January, 2006. Purpose of the visit is to observe the Irrawaddy dolphin, approximatel
… More
y 100 numbers of which inhabit in Chilika Lake in Orissa state in India. Collaborating with Indian Institute of Technology, Delhi, CDA (Cilika Development Authority) and WWF-India, we deployed the array to the Lake and recorded clicks data. We succeed in achieving some dolphins trajectories in semi-real time. Based on this result, WWF-India has agreed to apply the system to Ganges river dolphin survey. We made experiments on an isolated Ganges river dolphin which was found at the upper stream of Budhabalanga river in Orissa state in December 2005. From data, Ganges river dolphin's special characteristics such as very narrow beam pattern (12°) have been claritied. Then, we made preliminary experiments in Ganges river in February 2007, in Narora on the outskirts of Delhi. It is expected that we will develop a robust and compact acoustic system for Ganges river dolphin survey, which is suitable for the harsh river environment. In regard to Irrawaddy dolphin survey, we have developed a proto-type of autonomous real time acoustic system for a long term monitoring which consists of a water base and a land base. Construction and monitoring started in January 2007. We came up with conclusion that more concrete observatories and infrastructure for communication networks such as internet system should be constructed to develop a new monitoring system which can connect what is happening under the lake with the world in real time. Less
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Research Products
(27 results)
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[Journal Article] ガンジスカワイルカの3次元潜水行動2007
Author(s)
山本友紀子, 赤松友成, 浦環, 杉松治美, 小島淳一, Rajendar Bahl, S.K.Behera, A.K.Pattnaik, Muntaz Khan, S.Kar, C.S.Kar
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Journal Title
2007年度日本水産学会春季大会講演要旨集
Pages: 195
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Estimated beam pattern and echolocation characteristics of clicks recorded from a free-ranging Ganges river dolphin2007
Author(s)
浦環, Rajendar Bahl, 杉松治美, 小島淳一, 井上知己, 福地鉄雄, S.K.Behera, A.K.Pattnaik, Muntaz Khan, S.Kar, C.S.Kar, D.Swain
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Journal Title
Proc.UT'07+SSC'07, Tokyo, Japan
Pages: 527-534
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Estimated beam pattern and echolocation characteristics of clicks recorded from a free-ranging Ganges river dolphin2007
Author(s)
T.Ura, Rajendar Bahl, H.Sugimatsu, J.Kojima, T.Inoue, T.Fukuchi, S.K.Behera, A.K.Pattnaik, Muntaz Khan, S.Kar, C.S.Kar, D.Swain
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Journal Title
Proc.UT'07+SSC'07, Tokyo, Japan
Pages: 527-534
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Acoustic Survey of Irrawaddy Dolphin Populations In Chilika Lagoon : First Test of A Compact High-Resolution Device2006
Author(s)
Rajendar Bahl, 浦環, 杉松治美, 井上知己, 坂巻隆, 小島淳一, 赤松友成, 高橋秀幸, S.K.Behera, A.K.Pattnaik, Muntaz Khan, S.K. Kar
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Journal Title
Proc OCEANS'06 Singapore, Singapore
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Observation studies based on echolocation click signals of Irrawaddy dolphins in Chilika lagoon2006
Author(s)
Rajendar Bahl, 浦環, 井上知己, 杉松治美, 坂巻隆, 小島淳一, 赤松友成, 高橋秀幸, A.K. Pattnaik, Muntaz Khan, S.K.Behera, S. Kar
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Journal Title
The Journal of the Acoustic Society of America (Proc.Fourth Joint Meeting of Acoustic Society of America and Acoustic Society of Japan) Vol.120, No.5
Pages: 3014
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Estimates of bio-sonar characteristics of a free-ranging Ganges river dolphin2006
Author(s)
浦環, 杉松治美, 井上知己, Rajendar Bahl, 小島淳一, 赤松友成, S.K.Behera, A.K.Pattnaik, Muntaz Khan, S.Kar, C.S.Kar, 福地鉄雄, 高橋秀幸, D.Swain
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Journal Title
The Journal of the Acoustic Society of America (Proc.Fourth Joint Meeting of Acoustic Society of America and Acoustic Society of Japan) Vol.120, No.5
Pages: 3228
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Acoustic Survey of Irrawaddy Dolphin Populations In Chilika Lagoon : First Test of A Compact High-Resolution Device2006
Author(s)
Rajendar Bahl, T.Ura, H.Sugimatsu, T.Inoue, T.Sakamaki, J.Kojima, T.Akamatsu, H.Takahashi, S.K.Behera, A.K.Pattnaik, Muntaz Khan, S.K.Kar
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Journal Title
Proc OCEANS'06 Singapore, Singapore
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Estimates of bio-sonar characteristics of a free-ranging Ganges river dolphin2006
Author(s)
Rajendar Bahl, T.Ura, T.Inoue, H.Sugimatsu, T.Sakamaki, J.Kojima, T.Akamatsu, H.Takahashi, A.K.Pattnaik, Muntaz Khan, S.K.Behera, S.Kar
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Journal Title
The Journal of the Acoustic Society of America (Proc.Fourth Joint Meeting of Acoustic Society of America and Acoustic Society of Japan) Vol.120, No.5
Pages: 3014
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Observation studies based on echolocation click signals of Irrawaddy dolphins in Chilika lagoon2006
Author(s)
T.Ura, H.Sugimatsu, T.Inoue, Rajendar Bahl, J.Kojima, T.Akamatsu, S.K.Behera, A.K.Pattnaik, Muntaz Khan, S.Kar, C.S.Kar, T.Fukuchi, H.Takahashi, D.Swain
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Journal Title
The Journal of the Acoustic Society of America (Proc.Fourth Joint Meeting of Acoustic Society of America and Acoustic Society of Japan) Vol.120, No.5
Pages: 3228
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Acoustic Tracking of Sperm Whales using Two Sets of Hydrophone Array2004
Author(s)
浦環, 坂田雅雄, Rajendar Bahl, 小島淳一, 福地鉄雄, 浦純也, 能勢義昭, 杉松治美, 森恭一, 中谷武志, 柳澤政生
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Journal Title
Proc.UT'04, Taipei.Taiwan
Pages: 103-107
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Passive tracking of multiple diving sperm whales using single hydrophones at two mobile locations2004
Author(s)
Rajendar Bahl, 中谷武志, 浦環, 小島淳一, 福地鉄雄, 坂田雅雄, 能勢義昭, 浦純也, 森恭一, 杉松治美, 柳澤政生, 鈴木英之
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Journal Title
Abstracts of 147th Meeting Acoustical Society of Americ, N.Y, USA
Pages: 2518-2519
Description
「研究成果報告書概要(和文)」より
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[Journal Article] Acoustic Tracking of Sperm Whales using Two Sets of Hydrophone Array2004
Author(s)
T.Ura, M.Sakata, Rajendar Bahl, J.Kojima, T.Fukuchi, J.Ura, Y.Nose, H.Sugimatsu, K.Mori, T.Nakatani, M.Yanagisawa
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Journal Title
Proc.UT'04, Taipei.Taiwan
Pages: 103-107
Description
「研究成果報告書概要(欧文)」より
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[Journal Article] Passive tracking of multiple diving sperm whales using single hydrophones at two mobile locations2004
Author(s)
Rajendar Bahl, T.Nakatani, T.Ura, J.Kojima, T.Fukuchi, M.Sakata, Y.Nose, J.Ura, K.Mori, H.Sugimatsu, M.Yanagisawa, H.Suzuki
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Journal Title
Abstracts of 147th Meeting Acoustical Society of Americ, N.Y, USA
Pages: 2518-2519
Description
「研究成果報告書概要(欧文)」より
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