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Methods for in-situ measurement of acoustic properties in marine sediments
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HY/T 0278-2019
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PDF similar to HYT0278-2019
Basic data | Standard ID | HY/T 0278-2019 (HY/T0278-2019) | | Description (Translated English) | Methods for in-situ measurement of acoustic properties in marine sediments | | Sector / Industry | Marine Industry Standard (Recommended) | | Word Count Estimation | 10,142 | | Quoted Standard | GB/T 12763.1; GB/T 12763.2; GB/T 12763.7; GB/T 12763.8 | | Regulation (derived from) | Ministry of Natural Resources Announcement No. 57 of 2019 | | Summary | This standard specifies the in-situ measurement principle, measurement content, measurement procedure and measurement report of longitudinal wave sound velocity and sound attenuation coefficient in submarine sediments. This standard is applicable to the in-situ measurement of acoustic longitudinal wave characteristics of seabed sediments in ocean surveys. | HYT0278-2019: Methods for in-situ measurement of acoustic properties in marine sediments---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Methods for in-situ measurement of acoustic properties in marine sediments
ICS 07.060; 13.060.01
Z17
People's Republic of China Marine Industry Standard
In-situ measurement method of acoustic characteristics of submarine sediments
2019-12-20 release
2020-02-01 Implementation
Issued by the Ministry of Natural Resources of the People's Republic of China
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
Please note that some content of this document may involve patents. Publication of this document
The institution does not assume responsibility for identifying these patents.
This standard was proposed by the Ministry of Natural Resources of the People's Republic of China.
This standard is under the jurisdiction of the National Marine Standardization Technical Committee (SAC/TC283).
This standard was drafted by. Second Institute of Oceanography, Ministry of Natural Resources, First Institute of Oceanography, Ministry of Natural Resources, Acoustic Research, Chinese Academy of Sciences
Institute, National Marine Standards Measurement Center.
The main drafters of this standard. Tao Chunhui, Li Guanbao, Zhou Jianping, Zhang Guosong, Wang Dong, Sui Jun, Kan Guangming, Deng Xianming, Wang Jingqiang, Meng Xiangmei.
In-situ measurement method of acoustic characteristics of submarine sediments
1 Scope
This standard specifies the in-situ measurement principle, measurement content, measurement procedure and measurement of longitudinal wave sound velocity and sound attenuation coefficient in submarine sediments
report.
This standard is applicable to the in-situ measurement of acoustic longitudinal wave characteristics of seabed sediments in ocean surveys.
2 Normative references
The following documents are essential for the application of this document. For dated references, only the dated version applies to this article
Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document.
GB/T 12763.1 Marine Survey Specifications Part 1.General
GB/T 12763.2 Marine Survey Specifications Part 2.Marine Hydrological Observation
GB/T 12763.7 Marine Survey Specifications Part 7.Marine Survey Data Exchange
GB/T 12763.8 Marine Survey Specifications Part 8.Marine Geological and Geophysical Survey
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Sediment acoustic properties acousticpropertiesinmarinesediments
The propagation velocity and acoustic attenuation coefficient of longitudinal wave acoustic waves in sediments.
3.2
In-situ measurement
Place the instrument on the seabed, the surrounding environment has not changed, and the temperature, pressure, and geotechnical conditions of the sediment on the seabed are kept to the greatest extent.
A method of directly measuring the characteristics of sediments to avoid disturbances caused by sediments during sampling and handling of sediment samples.
3.3
Sediment velocity soundvelocityinsediments
Vs(f)
The propagation speed of longitudinal wave in sediment corresponding to frequency f.
Note. The unit of sound velocity of sediment is expressed in meters per second (m/s).
3.4
Soundvelocityinseawater
Vw(f)
The propagation speed of longitudinal waves in seawater corresponding to frequency f.
Note. The unit of sound velocity of seawater is expressed in meters per second (m/s).
3.5
Sound attenuation coefficient of sediments
α(f)
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