지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.1
- 수록면
- 427 - 434 (8page)
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초록· 키워드
오류제보하기
Although ex situ target strength (TS) measurements using dual- and split-beam systems have become the primary approach of estimating fish abundance, theoretical model estimation is a powerful tool for verifying the measurements, as well as for providing values when making direct measurements is difficult. TS values for 20 samples of live bambooleaf wrasse (Pseudolabrus japonicus) whose target length (TL) ranged between 13.7 and 21.3 cm were estimated theoretically using the Kirchhoff-ray mode model, and the TS values for 18 live fish samples were additionally measured at ~0º tilt angle to the swimming aspect using a tethered method at a frequency of 120 kHz to verify the theoretical values. The digitizing intervals used to extract the fish body and swim bladder morphology in the X-ray photographs significantly affected the calculated TS patterns, but variations based on the speed of sound and density ratio values for the general range of fish flesh were relatively small (within 1 dB). Close agreement was observed between the measured and theoretical TS values, and the correlation between the average TS and body length of the fish could be calculated accurately as <TS120kHz>= 20logTL (cm) –71.6 using the theoretical method.
목차
등록된 정보가 없습니다.
참고문헌 (26)
참고문헌 신청
Beverton RJH / 1990 / Small pelagic fish and the threat of fishing;are they endangered? / J Fish Biol 37 (Supplement A) : 5 ~ 16
Blaxter JHS / 1990 / Swim-bladder "behaviour" and target strength / Rapp. P.-v. Reun Cons int Explor Mer 189 : 233 ~ 244
Clay CS / 1991 / Low-resolution acoustic scattering models : fluid-filled cylinders and fish with swim-bladders / J Acoust Soc Am 89 : 2168 ~ 2179
Clay CS / 1992 / Composite ray-mode approximations for backscattered sound from gas-filled cylinders and swim-bladders / J Acoust Soc Am 92 : 2173 ~ 2180
Clay CS / 1994 / Acoustic models of fish : The Atlantic cod(Gadus Morhua) / J Acoust Soc Am 96 : 1661 ~ 1668
Blaxter JHS / 1990 / Swim-bladder "behaviour" and target strength / Rapp. P.-v. Reun Cons int Explor Mer 189 : 233 ~ 244
Clay CS / 1991 / Low-resolution acoustic scattering models : fluid-filled cylinders and fish with swim-bladders / J Acoust Soc Am 89 : 2168 ~ 2179
Clay CS / 1992 / Composite ray-mode approximations for backscattered sound from gas-filled cylinders and swim-bladders / J Acoust Soc Am 92 : 2173 ~ 2180
Clay CS / 1994 / Acoustic models of fish : The Atlantic cod(Gadus Morhua) / J Acoust Soc Am 96 : 1661 ~ 1668
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