TY - JOUR
TI - Averaging Underwater Noise Levels for Environmental Assessment of Shipping
AU - Merchant, N
AU - Blondel, P
AU - Dakin, D
AU - Dorocicz, J
T2 - Journal of the Acoustical Society of America
AB - Rising underwater noise levels from shipping have raised concerns regarding chronic impacts to marine fauna. However, there is a lack of consensus over how to average local shipping noise levels for environmental impact assessment. This paper addresses this issue using 110 days of continuous data recorded in the Strait of Georgia, Canada. Probability densities of -107 1-s samples in selected 1/3 octave bands were approximately stationary across one-month subsamples. Median and mode levels varied with averaging time. Mean sound pressure levels averaged in linear space, though susceptible to strong bias from outliers, are most relevant to cumulative impact assessment metrics.
DA - 2012/09//
PY - 2012
VL - 132
IS - 4
SP - EL343
EP - EL349
UR - http://scitation.aip.org/content/asa/journal/jasa/132/4/10.1121/1.4754429
DO - 10.1121/1.4754429
LA - English
KW - Noise
ER -