해양 환경 변화를 고려한 최적의 전파 보정 계수 산출

초록

This study proposes a method to estimate the optimal propagation correction coefficient. The method involves conducting simultaneous measurements to account for variations in sound pressure levels caused by water depth, seabed characteristics, and meteorological conditions. Under the offshore wind farm project in Buan, Jeonbuk-do, underwater noise measurements were carried out using two vessels. The stationary vessel, located near the noise source, recorded sound pressure levels ranging from 129 to 132 dB/1 µPa depending on wind speed. In contrast, the moving vessel, placed at regular intervals from the source, recorded levels between 117 and 122 dB/1 µPa depending on distance. By predicting the sound pressure levels and minimizing the mean error between predicted and measured values, the optimal propagation correction coefficient was determined to be 8.3. Estimating this coefficient based on the specific marine environment is expected to improve the accuracy of source level prediction and the assessment of the impact range on marine life.

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