KRM 모델을 이용한 전갱이의 다주파수 음향산란특성 = Multifrequency acoustic scattering characteristics of jack mackerel by KRM model

다국어 초록 (Multilingual Abstract)

This study was focused on acoustic scattering characteristics of jack mackerel (Trachurus japonicus) at frequency 38, 70, and 120 kHz by Kirchhoff-ray mode (KRM) model. The body length (BL) of 16 individuals ranged in 12.2~22.0 cm (mean±S.D.: 17.8±3.2 cm) and the swimbladder length ranged in 4.2~8.6 cm (mean±S.D.: 6.6±1.6 cm) and the swimbladder cross section ranged in 1.7~6.6 cm2 (mean±S.D.: 3.8±1.6 cm2). This result shows that results correlate well between the BL and the length and cross section of swimbladder. The swimbladder angle ranged in 7~12°and the maximum TS values ranged in 16~ 5°at tilt angle. The averaged TS-to-BL relationship were TS38kHz=20log10BL-65.33 (R2=0.66), TS70kHz=20log10BL-65.90 (R2=0.67), and TS120kHz=20log10BL-66.65 (R2=0.65). These results can be used fundamental data in order to estimate distribution and biomass of jack mackerel by using hydro-acoustic method.

참고문헌 (Reference)

1 이대재, "한국 연근해에서 어획된 주요 12 어종의 75 kHz에 대한 음향 반사 강도의 체장 의존성" 한국어업기술학회 41 (41): 296-305, 2005

2 Lillo S, "Target-strength measurements of hake and jack mackerel" 53 : 267-271, 1996

3 Sawada K., "Study on the precise estimation of the target strength of fish" 11 : 47-122, 2002

4 O’Driscoll RL, "Pilot acoustic survey for jack mackerel on the west coast New Zealand (JMA7)" 1-53, 2013

5 이승종, "KRM 모델을 이용한 제주바다목장 해역 주요 우점종의 음향반사강도" 한국어업기술학회 46 (46): 157-164, 2010

6 Sawada K, "Introduction of the precise TS measurement for fisheries acoustics" 26 : 209-214, 2002

7 Peña H, "In situ target-strength measurements of Chilean jack mackerel (Trachurus symmetricus murphyi) collected with a scientific echosounder installed on a fishing vessel" 65 : 594-604, 2008

8 MacLennan DN, "Fisheries acoustics" Chapman and Hall 1992

9 Huh SH, "Feeding habits of jack mackerel,Trachurus japonicus, collected from the Nakdong river estuary" 34 : 320-327, 1998

10 Mukai T, "Depth dependence of target strength of live kokanee salmon in accordance with Boyle’s law" 53 : 245-248, 1996

11 Kurnia M, "Characteristics of three-dimensional target strength of swim bladdered fish" 39 : 93-102, 2012

12 Foote KG, "Averaging of fish target strength function" 80 : 612-621, 1980

13 Nakamura T, "Acoustic scattering properties of juvenile jack mackerel Trachurus japonicus based on a scattering model and ex situ target strength measurements" 79 : 345-354, 2013

14 Clay CS, "Acoustic models of fish: The Atlantic cod (Gadus morhua)" 96 : 1661-1668, 1994