초음파를 이용한 퇴적물 연직프로파일 측정

Title
초음파를 이용한 퇴적물 연직프로파일 측정
Alternative Title
Acoustic Approach for Measuring Sediments Bed Structure
Author(s)
하호경; J.P.-Y.Maa; 박광순; 이동영
Publication Year
2003-10-01
Abstract
Acoustic impedance, the product of density and acoustic velocity of a material, can be used as a proxy for SSC, because it is proportional to the backscatter. The conventional low-frequency acoustic technique may not be appropriate to identify the high-resolution (~millimeters) vertical profiles of SSC near the sediment bottom, due to the inherent limitation in resolution. In this study, high-frequency (210■760 kHz) Chirp acoustic waves were employed to yield the high-resolution profiles of SSC. The primary aims were to evaluate a potential of acoustic systems for detecting the existence and features of a fluffy layer, and to address the signal implication on the interface between the subaqueous layers with different rheological characteristics.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/32179
Bibliographic Citation
The 7th International Conference on Nearshore and Estuarine Cohesive Sediment Transport Processes, pp.85 - 86, 2003
Publisher
Virginia Institute of Marine Science(VIMS), U.S.A.
Type
Conference
Language
English
Publisher
Virginia Institute of Marine Science(VIMS), U.S.A.
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