Determination of nodule coverage parameters using multibeam normal incidence echo characteristics: A study in the Indian Ocean

摘要: A study of the echo peak amplitudes from known nodule areas is initiated to observe acoustic response for varying abundances and number densities. statistical different confirms that coefficient variation highest medium abundance density. Echo fluctuation based on Rician probability density function (PDF) establishes non‐nodule sediment bottom contributes less scattering, i.e., it a microtopographic type, whereas scattering dominant in nodule‐bearing areas. The spectral studies are conducted depth data This ensures signal area due nodules lying seabed rather than large / small‐scale topographic variations. Poisson PDF this fact again. Agreement between distribution parameter clearly seen. Such relation ...