Research on Acoustic Properties of Seafloor Sediment with Temperature and Pressure Controlled

Zou, Dapeng; Yan, Ping; Zhou, Jianping

doi:10.1080/1064119x.2012.661032

Cited by 9 publications

(13 citation statements)

References 11 publications

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“…Our porosity (0.43-0.81) results are consistent with the northern SCS and higher than the middle southern Yellow Sea. The density of seafloor sediment in this study ranges from 1.21 to 2.08 g/cm 3 , which is lower than that of the southern Yellow Sea sediment measured by Sun who obtained the density rang of 1.40-2.10 g/cm 3 [8]. There are five types of seafloor sediment: clayey silt, silt, sand-silt-clay, sandy silt, and silty sand (Figure 1).…”

Section: Resultscontrasting

confidence: 55%

“…The lowest measured density is 1.21 g/cm 3 , which is larger than ρ min (1.13), and the highest measured porosity is 2.08 g/cm 3 , which is close to ρ max (2.01). These measured density data lie between N min and N max , which is also consistent with the result of [44], suggesting the influences of the mean grain size and the RMS roughness on the density are notable.…”

Section: Density Versus Mean Grain Sizementioning

confidence: 68%

“…The measured density and porosity data of seafloor sediment in the SCS are shown in Figure 3. The porosity of seafloor sediment is between 0.43 and 0.81, and the density of seafloor sediment is between 1.21 and 1.78 g/cm 3 . The measured porosity and density data are in accordance with the Eq.…”

Section: Density Versus Mean Grain Sizementioning

confidence: 99%

“…The correlation between the density and mean grain size from Eqs 4, 8 is represented in Figure 4. The mean grain size varies from 4.12 to 224.07 μm, and the density varies from 1.21 to 1.78 g/cm 3 . And, the RMS roughness values of the random packing of rough spheres model are 0.2, 1, 3, 4.5, 9, and 15 from the top to down, respectively.…”

Section: Density Versus Mean Grain Sizementioning

confidence: 99%

“…The compression wave and physical properties of seafloor sediments can provide basic information for use in submarine geomorphology and ocean acoustic field simulations [1][2][3][4][5][6][7][8]. Moreover, these parameters are vital for the theory of wave propagation in unconsolidated seafloor sediment [9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

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Effects of physical properties on the compression wave speed of seafloor sediment in the South China Sea: Comparisons between theoretical models and measured data

Tian

Chen²,

Mo³

et al. 2023

Front. Phys.

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The compression wave speed and physical properties of seafloor sediments are significant in marine engineering and marine acoustics. Although most regression equations can be satisfactorily fitted to the data and provide a useful predictive method, there is little insight into the influence of physical properties on the compression wave speed of seafloor sediment in the South China Sea (SCS). To characterize the compression wave speed and physical properties of seafloor sediments, the compression wave speed, porosity, density, and mean grain size were measured and calculated for forty-two samples collected from the South China Sea. The results show that the RMS roughness of seafloor sediment in the South China Sea ranges from 0.2 to 15 μm, and the porosity and density are determined by the RMS roughness and mean grain size. The relationships between the compression wave speed and physical properties of seafloor sediments are consistent with the intergranular friction model. When we have the physical parameters but no compression wave speed, therefore, the intergranular friction model can be used to predict the compression wave speed of seafloor sediment. Compared with the Wood model curve, we also reveal that the intergranular friction of seafloor sediment is an important parameter in determining the compression wave speed.

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Section: Resultscontrasting

confidence: 55%