한국수산과학회지 (Korean Journal of Fisheries and Aquatic Sciences)

  • 제37권4호
  • /
  • Pages.312-322
  • /
  • 2004
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  • 0374-8111(pISSN)
  • /
  • 2287-8815(eISSN)
한국수산과학회 (The Korean Society of Fisheries and Aquatic Science)
권호 표지
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남해 및 남동해역 대륙붕 퇴적물의 지음향 특성

Geoacoustic Characteristics of Shelf Sediment in the South Sea and Southeastern Sea of Korea

  • 김대철 (부경대학교 환경탐사공학과) ;
  • 서영교 (부경대학교 응용지질학과) ;
  • 정자헌 (부경대학교 응용지질학과) ;
  • 김길영 (한국해양대학교 해양과학기술연구소)
  • KIM Dae Choul (Department of Environmental Exploration Engineering, Pukong National University) ;
  • SEO Young Kyo (Department Applied Geology, Pukyong National University) ;
  • JUNG Ja Hun (Department Applied Geology, Pukyong National University) ;
  • KIM Gil Young (Research Institute of Marine Science & Technology)
  • 발행 : 2004.08.01
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초록

Physical and geoacoustic properties of inner shelf sediment in the South and Southeastern Seas of Korea have been studied based on six piston core samples. The sediments are largely composed of homogeneous mud except the core from the southeasternmost part of the area. Both physical and geoacoustic properties and mean grain size are relatively uniform with sediment depth, suggesting little effect of sediment compaction and/or consolidation. Mean grain size appears to be the most Important variable to determine the physical and acoustic properties. In contrast, the attenuation shows more or less fluctuations. Correlations between physical properties and sediment texture show slight deviations from those of the compared data, caused by the difference of sedimentary processes, mineral composition, and the difference of measurement system. In particular, the velocity is lower (approximately 20-30 m/s) than that of the previous data measured in the same area. This is probably due to the difference in velocity measurement system (particularly, error by a length of sample). We propose new relationships for physical and geoacoustic characteristics of shelf sediment in the study area.

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