Studies on normal incidence backscattering in nodule areas using the multibeam-hydrosweep system

Abstract

The acoustic response from areas of varying nodule abundance and number densities in the Central Indian Ocean has been studied by using the echo peak amplitudes of the normal incidence beam in the Multibeam Hydrosweep system. It is observed that in areas of higher nodule abundance, the acoustic response is more deterministic. The coefficient of variation of the echopeak amplitude is observed to be the highest for areas with medium nodule abundance and number densities