Fig. 9
From: Marine soundscapes of the Arctic and human impacts: going beyond the “shipping bands”
Frequency contributions of loud, continuous events for August (top) and May (middle). The blue bins show the mean SPL for each third-octave band. The MSFD bands of 63 Hz and 125 Hz are highlighted in red. For reference, the mean SPL for all measurements across the entire month is indicated with a black line. For each month, the numbers in the top right of each subplot correspond to the mean, corrected ice draft above the hydrophone (in metres), the number of loud, continuous events identified (in red) and the number of measurements available for the month. For example, for August 2015, the mean ice draft was 0.0 m and there were 108 loud, continuous events identified in measurements covering 60.7% of the entire month (for May 2015, the mean ice draft was 1.7 m and 128 loud, continuous events were identified in measurements covering 92.0% of the entire month). Bottom: difference between the frequency contributions of August and May.
