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Underwater Acoustic Absorption (Thorp) & Sound Speed Calculator

Easily calculate and compute underwater acoustic absorption (thorp) & sound speed calculator with accurate equations, live formulas, and expert guidance.

Sonar operating frequency.

Ocean water temperature.

Salinity in parts per thousand (standard ocean ~35 ppt).

Hydrostatic depth.

Calculated Result
0.22 dB/km

Acoustic Attenuation Coefficient α

Acoustic Attenuation Coefficient α

0.22 dB/km

Absorption Db Km

0.21797775989565232

Sound Speed M S

1500.90993595

Frequency Khz

3.5

Water Temp C

12

0.22 — dB/km

Calculation Breakdown

  1. Applied FormulaCalculates underwater seawater acoustic absorption using Thorp’s empirical formula (relaxations of boric acid and magnesium sulfate) and Mackenzie sound speed.\alpha(f) = \frac{0.1 f^2}{1 + f^2} + \frac{40 f^2}{4100 + f^2} + 2.75 \times 10^{-4} f^2 + 0.003

Underwater Sound Absorption Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.00.30.50.81.0Acoustic Attenuation Coefficient α

What Is the Underwater Acoustic Absorption (Thorp) & Sound Speed Calculator?

This tool computes underwater acoustic absorption (thorp) & sound speed calculator with high precision arithmetic.

How Does the Underwater Acoustic Absorption (Thorp) & Sound Speed Calculator Work?

Calculates underwater seawater acoustic absorption using Thorp’s empirical formula (relaxations of boric acid and magnesium sulfate) and Mackenzie sound speed.

Underwater Acoustic Absorption (Thorp) & Sound Speed Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

α(f)=0.1f21+f2+40f24100+f2+2.75×10−4f2+0.003\alpha(f) = \frac{0.1 f^2}{1 + f^2} + \frac{40 f^2}{4100 + f^2} + 2.75 \times 10^{-4} f^2 + 0.003

Calculates underwater seawater acoustic absorption using Thorp’s empirical formula (relaxations of boric acid and magnesium sulfate) and Mackenzie sound speed.

How to Use the Underwater Acoustic Absorption (Thorp) & Sound Speed Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Underwater Acoustic Absorption (Thorp) & Sound Speed Calculator Example

Input Values:

frequencyKhz:3.5
waterTempC:12
salinityPpt:35
depthMeters:250
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required dB/km.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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