Underwater Sound Absorption Thorp Calculator
Underwater acoustics & oceanography: Compute seawater sound absorption ($\alpha$ in $\text{dB/km}$ and $\text{dB/kyd}$) via Thorp’s formula, boric acid & $\text{MgSO}_4$ chemical relaxations, and transmission loss ($TL$).
Acoustic Wave & Range Parameters
LF sonar: 1–5 kHz; Multibeam: 12–100 kHz
One-way transmission distance
Seawater Environment (Mackenzie Sound Speed)
Deep ocean: 2–4 °C; Surface: 10–25 °C
Standard open ocean: 35 PSU
Hydrostatic pressure effect
Geometric dilution regime
Absorption & Transmission Loss Output
Absorption Coefficient α:
--
dB / kilometer
Total Transmission Loss (TL):
--
dB at specified range
Absorption Loss in Path (α · R):
--
dB dissipated into heat
Geometric Spreading Loss:
--
dB wave expansion loss
| Sound Speed c (Mackenzie): | -- |
| Acoustic Wavelength λ: | -- |
| Thorp Absorption (dB/kyd): | -- |
| Dominant Relaxation Mechanism: | -- |
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