근소만에서 영양염의 조석 및 계절 변화 서해
Ocean and Polar Research Tidal and Seasonal ... - Korea.net
Ocean and Polar Research Tidal and Seasonal ... - Korea.net
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
경기도 안산시 안산우체국 사서함 29<br />
(425-600)<br />
과학기술대학 해양환경과학부<br />
2한양대학교<br />
(426-791) 경기도 안산시 사 1동 1271<br />
Marine Resources Research Division, KORDI<br />
1<br />
P.O. Box 29, Seoul 425-600, Korea<br />
Ansan<br />
2 Major in Earth and Marine Sciences, College of Science & Technology<br />
: Hydroacoustic technique was used to analyze spatiotemporal stability and distribution of<br />
Abstract<br />
fish aggregations in the coastal region to overcome some limitations of the existing methods such<br />
demersal<br />
net and diving. The survey was carried out in the Baekeum Bay on the south coast of Korea in January<br />
as<br />
The bottom depth in the study site ranges from 7 to 25 m. In order to outline aggregations of demersal<br />
2007.<br />
initial scanning using 200 kHz split-beam transducer was randomly conducted over the large area.<br />
fish<br />
detected fish aggregation in the specific region, intensive acoustic survey of irregular star pattern<br />
Having<br />
carried out along 14 transects across the area in question. The results of the acoustic survey show that<br />
was<br />
demersal fish aggregations are concentrated about 5 m from sea bottom having a slight slope and remain<br />
all<br />
with no spatial or temporal variations during acoustic survey. The hydroacoustic method used in this<br />
steady<br />
offers a new approach to understand vertical and horizontal distribution, spatiotemporal stability, and<br />
study<br />
estimate of demersal fish aggregations in coastal regions. Additionally, the number of individual<br />
biomass<br />
estimated from in situ acoustic target strength data can be used to understand the standing stock of<br />
fish<br />
가운데 연구 대상을 해양 생물로 한정시킨 수산 음<br />
적용<br />
Acoustics) 혹은 생물 음향학(Bioacoustics)<br />
향학(Fisheries<br />
최근에는 해초류 서식지 조사, 식물 플랑크톤 생태<br />
1992).<br />
연구 대상 영역을 확대하고 있다(Sabol et al.<br />
분야로<br />
Vol. 30(1):79-87 Ocean and Polar Research March 2008<br />
Article<br />
수산 음향 기법을 이용한 연안 저서 어군의 시·공간 분포 <strong>및</strong> 안정성 조사<br />
1 *·이창원1·조성호2·명정구1<br />
강돈혁<br />
해양자원연구본부<br />
1한국해양연구원<br />
Hydroacoustic Survey of Spatiotemporal Stability and Distribution of<br />
Demersal Fish Aggregations in the Coastal Region<br />
Donghyug Kang 1 *<br />
, Changwon Lee 1 , Sungho Cho 2 , and Jung-Goo Myoung 1<br />
Hanyang University, Ansan 426-791, Korea<br />
demersal fish aggregation.<br />
Key words : demersal fish, fisheries acoustics, irregular star pattern survey, spatiotemporal stability<br />
1. 서 론<br />
음향학은 해수 내에서 감쇠(attenuation)가 적은 수<br />
수중<br />
음파의 전달 특성을 이용하여 해양 물리, 해양 기상, 해<br />
중<br />
세분화 되었으며 이들 분야에서는 주로 동물 플랑크<br />
으로<br />
치어, 어류 등의 시·공간 분포, 자원량 추정 등 기존<br />
톤,<br />
생물 분야 <strong>및</strong> 국방 분야에 다양하게 적용되고 있다<br />
양<br />
and Clay 1998). 해양에서 다양한 수중음향의<br />
(Medwin<br />
해양 생물학 분야에서 나타난 한계점을 상호 보완하는<br />
의<br />
영역을 포함하고 있다(MacLennan and Simmonds<br />
연구<br />
*Corresponding author. E-mail : dhkang@kordi.re.kr
Change language