한국음향학회지 (The Journal of the Acoustical Society of Korea)

  • 제19권3호
  • /
  • Pages.77-85
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  • 2000
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  • 1225-4428(pISSN)
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  • 2287-3775(eISSN)
한국음향학회 (The Acoustical Society of Korea)
권호 표지

퇴적물속도측정기를 이용한 대한해협 사질퇴적물의 음향특성

Acoustic Property of Sandy Sediment in the Korea Strait Using Sediment Sound Velocimeter

  • 발행 : 2000.04.01
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초록

사질퇴적물의 함량이 높은 대한해협 퇴적물에 대해 새로운 음파전달속도 측정 장비(sediment sound velocimeter)를 이용 음파전달속도와 물리적 성질을 측정하여, 연구지역의 지음향 및 물리적 특성을 제시하였다. 연구지역 퇴적물의 물성 및 음파전달속도 변화는 조직의 변화에 의해 크게 좌우되는 것으로 나타났다. 연구결과 음향 및 물성 값을 바탕으로 연구지역을 3개 지역(provinces; mid-shelf, shelf margin and trough)으로 구분할 수 있었으며, 이러한 결과는 탄성파 단면 분석을 통해 시스템 트랙과 퇴적계로 지역구분한 기존의 결과[14]와 잘 일치한다. 연구를 통해 새롭게 제시된 3개 지역의 지음향모델은 Briggs and Fischer[5]가 제시한 기존의 대한해협 지 음향모델의 수정모델로 제시한다.

Laboratory determinations of acoustic and physical properties in Korea Strait sediment were carried out. Sediment sound velocimeter(SSV) was employed to measure the sound velocity of sandy sediment. Distribution patterns of the acoustic and physical properties are controlled by sediment texture. The study area is divided into three provinces(mid-shelf, shelf margin and enough) based on the acoustic and physical properties. This classification matches well with the previous result[14] based on the systems tracks and depositional systems. We suggest a geoacoustic model of the Korea Strait that replacing the old model of Briggs and Fisher[5].

키워드

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