Table 2.
Median, mean, and standard deviation the global annual mean undersea acoustic parameters.
| Parameter | Median | Mean | Standard Deviation | Skewness | Kurtosis |
|---|---|---|---|---|---|
| Deep Sound Channel Axis Depth (m) | 950.0 | 871.6 | 400.2 | −0.46 | 2.94 |
| Sonic Layer Depth (m) | 10.0 | 24.2 | 67.4 | 8.55 | 97.55 |
| Second Sound Channel Axis Depth (m) | 125.0 | 216.8 | 231.2 | 1.36 | 4.83 |
| Critical Depth (m) | 3200.0 | 2895.1 | 1605.6 | −0.36 | 1.77 |
| Depth Excess (m) | 1300.0 | 1672.9 | 1312.7 | 0.76 | 2.51 |
| Surface Sound Speed (m/s) | 1527.2 | 1517.3 | 24.9 | −0.87 | 2.49 |
| Sonic Layer Depth Sound Speed (m/s) | 1527.3 | 1517.5 | 24.9 | −0.87 | 2.49 |
| Deep Sound Channel Axis Sound Speed (m/s) | 1483.8 | 1482.0 | 9.1 | −0.96 | 6.39 |
| Deep Sound Channel Strength (m/s) | 41.86 | 35.30 | 19.24 | −0.51 | 1.80 |
| Second Sound Channel Strength (m/s) | 6.51 | 9.70 | 11.75 | 1.66 | 5.48 |
| In-Layer Gradient (10−3 1/s) | 6.836 | 7.348 | 6.073 | 7.49 | 129.98 |
| Below Layer Gradient (10−3 1/s) | −44.42 | −44.93 | 27.59 | −4.39 | 55.90 |
| Surface Duct Cutoff Frequency (Hz) | 593 | 944 | 1386 | 6.84 | 66.80 |