How many Gammas correspond to an altitude of 100 ft?

The correct answer is that an altitude of 100 ft corresponds to 1 GAMMA due to the specifics of how altitude changes atmospheric pressure and, subsequently, the sound speed in water.

In oceanographic and acoustic contexts, GAMMA is a dimensionless parameter often used to standardize the effects of pressure and temperature on sound speed in seawater. At 100 ft, which is approximately 30.48 meters, the increase in pressure from sea level contributes to a specific value of GAMMA that reflects the conditions at that depth.

For reference, the increase in GAMMA typically occurs in increments based on pressure depth, with 1 GAMMA being the accepted measure for a 100 ft altitude. This understanding helps in accurately modeling sound propagation in underwater acoustics, ensuring that calculations factor in the right atmospheric conditions.

Knowing the GAMMA value is essential for interpreting acoustic data and ensuring precision in oceanographic studies, which is why understanding its correlation with altitude is critical for anyone working in this field.