便携式海底沉积声学原位测量系统研制及应用*

doi:10.11978/j.issn.1009-5470.2012.04.019

Abstract

Abstract:

The working principle and components of a newly developed portable seafloor sediment acoustic in situ measurement system were introduced in detail. Comparing to the sediment acoustic in situ measurement system based on hydraulically-driven penetration, the portable in situ system is flexible and easy to operate, more convenient for deployment and recovery. The acoustic properties of seafloor sediments in the northern South China Sea were measured using the portable in situ system during the 2010 South China Sea Open Cruise by R/V “Shiyan 3”. The in situ sound speeds and attenuation coefficients of seafloor sediments were obtained in this area for the first time. A comparison of the sound speeds measured by the portable in situ system and laboratorial equipment was carried out. The result indicates that there was distinct difference between the in situ and the laboratorial sound speeds, and the difference indicates environmental parameters, such as temperature and hydrostatic pressure, have significant influences on sound speeds of sediments.

Key words: seafloor sediment, sound speed, sound attenuation coefficient, in-situ measurement, South China Sea

CLC Number:

P716.41

KAN Guang-ming, ZOU Da-peng, LIU Bao-hua, LI Guan-bao. Development and application of a portable seafloor sediment acoustic in situ measurement system[J].Journal of Tropical Oceanography, 2012, 31(4): 135-139.

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Development and application of a portable seafloor sediment acoustic in situ measurement system

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