Marine piling - energy conversion factors in underwater radiated sound: review

A report which investigates the Energy Conversion Factor (ECF) method and provides recommendations regarding the modelling approaches for impact piling as used in environmental impact assessments (EIA) in Scottish Waters.


Tables

Table 1. Reviewed works employing the ECF in forward predictions

Table 2. Domains of applicability of underwater acoustics propagation models

Table 3. Calculated transmission loss (dB) between the monopole and DCS models for Example 1

Table 4. Calculated transmission loss (dB) between the monopole and DCS models for Example 2

Table 5. Calculated transmission loss (dB) between the monopole and DCS models for Example 3

Table 6. Calculated distances to arbitrary SEL thresholds (dB re 1 µPa²s) for the monopole and DCS models for Example 1

Table 7. Calculated distances to arbitrary SEL thresholds (dB re 1 µPa²s) for the monopole and DCS models for Example 3

Table 8. Parameters for the example pile

Table 9. Geoacoustic model for the numerical modelling example

Table 10. Broadband energy source levels (dB re 1 µPa²m²s) calculated using the back-propagating from a single point

Table 11. Broadband energy source levels (dB re 1 µPa²m²s) calculated using the point-source equivalent ECF method

Table 12. Distances (km) to specified sound exposure level thresholds (dB re 1 µPa²s) for the numerical models. Note that sound levels are not frequency weighted

Table 13. Bathymetry in the COMPILE II scenario

Table 14. Geoacoustic model calculated for the COMPILE II numerical modelling benchmarking scenario

Contact

Email: ScotMER@gov.scot

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