Statistical characteristics of seabed sound velocity in the Jinzhou Bay based on high resolution sub-bottom profile data

Wang Fangqi; Tao Changfei; Lin Xubo; Dong Lifeng

doi:10.3969/j.issn.0253-4193.2020.11.011

Volume 42 Issue 11

Dec. 2020

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Wang Fangqi，Tao Changfei，Lin Xubo, et al. Statistical characteristics of seabed sound velocity in the Jinzhou Bay based on high resolution sub-bottom profile data[J]. Haiyang Xuebao，2020, 42(11)：112–122 doi: 10.3969/j.issn.0253-4193.2020.11.011

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Statistical characteristics of seabed sound velocity in the Jinzhou Bay based on high resolution sub-bottom profile data

doi: 10.3969/j.issn.0253-4193.2020.11.011

First Institute of Oceanography, Ministry of Natural Resources, Qingdao 266061, China

Received Date: 2019-09-13
Rev Recd Date: 2020-03-07

Available Online: 2020-11-27

Publish Date: 2020-11-25

Abstract

Abstract

The sound velocity of marine sedimentary sequence is an important parameter. Finding out the changing rule of the seabed sound velocity is of extremely important significance. On the basis of distortion correction, by comparatively analyzing of high resolution sub-bottom profile data and borehole data, the accurate inversions of sound velocity in Holocene and above-bedrock sedimentary sequence are achieved in the Jinzhou Bay, Bohai Sea, China. Then, the characteristics and changing rules of seabed sound velocity in the study area are analyzed and discussed by statistical method. The 95% confidence interval of sound velocity of Holocene sequence is 1 449.60 m/s to 1 655.72 m/s, and the average is 1 560.34 m/s. The 95% confidence interval of sound velocity of above-bedrock sequence is 1 657.96 m/s to 1 970.80 m/s, and the average is 1 765.63 m/s. There is a significant positive linear correlation between the sound velocity of the sedimentary sequence and the burial depth in the study area, and the gradient of sound velocity is 4.18 s⁻¹.
- seabed sound velocity,
- sound velocity inversion,
- sub-bottom profile,
- statistical characteristics

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References(41)

References

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