A Prototype Target Strength Measuring System for Small Organisms Using an Acrylic Water Tank
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- FUKUDA Yoshiaki
- School of Fisheries Sciences, Hokkaido University
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- HASEGAWA Kohei
- Faculty of Fisheries Sciences, Hokkaido University
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- MUKAI Tohru
- Faculty of Fisheries Sciences, Hokkaido University
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- IMAIZUMI Tomohito
- Fisheries Technology Institute, Japan Fisheries Research and Education Agency
Bibliographic Information
- Other Title
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- アクリル水槽を用いた小型生物のターゲットストレングス測定システムの構築
Abstract
<p>We constructed a portable target strength measuring system for small targets like zooplankton. An acrylic water tank (60×60×180 cm) was used for the experiment. This was a bistatic system using two transducers at 400 kHz. The target strength of two cylinders was measured and compared with a sound scattering model to confirm that the system could measure target strength exactly. The model predictions were compared to measurements, and we confirmed that precise measurements of target strength were possible. In addition, we measured the side-aspect target strength patterns of Euphausia pacifica, which inhabit many of the ocean areas around Hokkaido. We confirmed that measurement was possible in an area with a noise level of approximately −90 dB.</p>
Journal
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- The Journal of the Marine Acoustics Society of Japan
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The Journal of the Marine Acoustics Society of Japan 49 (2), 37-45, 2022-04-01
The Marine Acoustics Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390292706081429248
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- ISSN
- 18816819
- 09165835
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
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- Abstract License Flag
- Disallowed