Abstract
The results of spatial measurements of acoustic noise generated by ice-navigation diesel–electric vessels, which are used in Sakhalin Energy Investment Company Ltd. to work with the PA-B and Molikpaq oil and gas platforms installed on the Northeastern shelf of the island of Sakhalin, are presented. Using a 3D modal parabolic equation and full-scale reference measurements, calculations of anthropogenic acoustic fields that are generated by these vessels in the coastal Piltun area of summer–autumn gray-whale feeding were performed in the approximation of normal vertical modes and a narrow-angle parabolic equation in the horizontal plane. Spectral functions of the point sources of anthropogenic acoustic noise that are equivalent to vessels are constructed for the simulation. The results of the numerical simulation that was performed using these functions are consistent with full-scale measurements.
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