Research Article
Acoustical Measurement and Biot Model for Coral Reef Detection and Quantification
Table 1
Physical parameters for coral reef models.
| | Physical parameters | Soft coral | Hard coral |
| | Grain diameter, | 5.2 | 1.5 | | (mm) | 0.022 | 0.453 | | Grain density, (kg/m3) | 2,675 | 2,675 | | Bulk modulus, (Pa) | 3.6 1010 | 3.6 1010 | | Density of pore fluid, (kg/m3) | 1,000 | 1,000 | | Bulk modulus of pore fluid, (Pa) | 2.25 109 | 2.25 109 | | Viscosity, (Pa-s) | 1.00 10−3 | 1.00 10−3 | | Porosity, | 0.82 | 0.33 | | Permeability, κ (m2) | 4.45 10−12 | 8.06 10−11 | | Pore size, (m) | 1.30 10−5 | 7.35 10−5 | | Structure factor, | 1.30 | 1.30 | | Bulk modulus of frame, (Pa) | 1.45 107 | 5.8 107 | | Bulk logarithmic decrement, | 0.15 | 0.15 | | Shear modulus, (Pa) | 4.45 106 | 9.45 106 | | Shear logarithmic decrement, | 0.16 | 0.16 |
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