Methods of in-situ acoustic measurement of seafloor surface sediment
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摘要: 研究透射式和折射式两类海底沉积声学原位测量方法,通过分析10种海底浅表层沉积物声学原位测量仪器的特征,指出不同声学原位测量技术对沉积物声学特性测量结果的影响。比较黄海海底浅表层沉积声学原位测量数据与实验室测量结果的差异,分析原位声学测量数据普遍小于实验室测量数据的原因,指出原位测量的作用和重要性。探讨指出海底浅表层沉积物原位声学测量所需要配合发展的其他物理性质原位测量技术。Abstract: In this paper we studied on two methods of seafloor deposition in-situ acoustic detection,i.e.,the transmission measurement and the refraction measurement,analyzed characteristics of 10 kinds of in-situ instruments of seafloor surface sediment acoustic measurement,and discussed the influence of different measurement techniques on the acoustic properties of seafloor sediment. Then,we compared the differences in obtained results between in-situ measurement and laboratorial measurement on the seafloor sediment of the Yellow Sea,analyzed the reason why the in-situ measurement data are generally smaller than laboratorial measurement results. Finally,we suggested that in-situ acoustic measurement is of importance on studying seafloor sediment,and the in-situ measurement techniques for other physical properties need to be improved to match the requirements of in-situ acoustic measurement of seafloor sediment.
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Key words:
- in-situ measurement /
- acoustics /
- seafloor sediment /
- compressional wave /
- shear wave
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