What is the range of the Alfa index?

The Alfa index, which is used in the context of oceanographic and acoustic measurements, is designed to quantify certain acoustic properties and environmental conditions. While there are various indices used in the field, the specific range of the Alfa index is defined as 0 to 25.

This range provides a straightforward way to assess acoustic conditions in the water, with lower values indicating clearer conditions and higher values reflecting more ambient noise or increased sound propagation complexity. Understanding this scale is essential for interpreting acoustic data accurately, as it provides insights into the underwater environment and potential impacts on acoustic performance, target detection, and other underwater operations.

The other ranges do not align with the established definitions for the Alfa index and therefore cannot be considered correct. Understanding the specific range of the Alfa index is crucial for professionals working with acoustic measurements in oceanographic studies.