Table 3.
Median, mean, and standard deviation the global winter mean undersea acoustic parameters.
| Parameter | Median | Mean | Standard Deviation | Skewness | Kurtosis |
|---|---|---|---|---|---|
| Deep Sound Channel Axis Depth (m) | 900.0 | 792.6 | 444.4 | −0.31 | 2.26 |
| Sonic Layer Depth (m) | 10.0 | 31.8 | 75.5 | 9.74 | 130.6 |
| Second Sound Channel Axis Depth (m) | 45.0 | 172.9 | 233.6 | 1.95 | 7.60 |
| Critical Depth (m) | 2700.0 | 2486.6 | 1771.2 | −0.07 | 1.47 |
| Depth Excess (m) | 1800.0 | 2056.8 | 1499.5 | 0.44 | 1.96 |
| Surface Sound Speed (m/s) | 1524.2 | 1511.1 | 31.21 | −0.77 | 2.15 |
| Sonic Layer Depth Sound Speed (m/s) | 1524.4 | 1511.4 | 31.20 | −0.77 | 2.17 |
| Deep Sound Channel Axis Sound Speed (m/s) | 1483.0 | 1478.0 | 14.10 | −1.23 | 3.92 |
| Deep Sound Channel Strength (m/s) | 38.97 | 33.03 | 20.39 | −0.27 | 1.47 |
| Second Sound Channel Strength (m/s) | 0.56 | 9.43 | 14.00 | 1.56 | 4.36 |
| In-Layer Gradient (10−3 1/s) | 8.005 | 9.242 | 8.216 | 5.56 | 65.03 |
| Below Layer Gradient (10−3 1/s) | −50.62 | −49.56 | 23.12 | −1.23 | 16.99 |
| Surface Duct Cutoff Frequency (Hz) | 490 | 625 | 802 | 10.79 | 184.70 |