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Measurement of vertical migration speed of Sound Scattering Layer using an bottom mooring type Acoustic Doppler Current Profiler

해저설치형 음향도플러유향유속계를 이용한 음향산란층의 연직이동속도 측정

  • Jo, Hyeon-Jeong (Department of Marine Police and Technology, Gangwon Provincial Collage) ;
  • Lee, Kyoung-Hoon (Fisheries Engineering System Division, National Fisheries Research & Development Institute)
  • 조현정 (강원도립대학 해양경찰학과) ;
  • 이경훈 (국립수산과학원 시스템공학과)
  • Received : 2010.10.11
  • Accepted : 2010.11.09
  • Published : 2010.11.30

Abstract

This study shows that the vertical migration speed of sound scattering layers (SSLs), which is distributed in near Funka Bay, were measured by 3D velocity components acquired from a bottom moorng ADCP. While the bottom mooring type has a problem to measure the velocity vectors of sound scattering layer distributed near to surface, both the continuous vertical migration patterns and variability of backscatterers were routinely investigated as well. In addition, the velocity vectors were compared with the vertical migration velocity estimated from echograms of Mean Volume Backscattering Strength, and estimated to produce observational bias due to SSLs which is composed of backscatterers such as euphausiids, nekton, and fishes have swimming ability.

Acknowledgement

Supported by : 국립수산과학원

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Cited by

  1. Backscattering strength and vertical distribution of dominant fishes in inland waters by hydroacoustics vol.50, pp.4, 2014, https://doi.org/10.3796/KSFT.2014.50.4.476