Propagation Loss Modelling on the Scotian Shelf: Comparison of Model Predictions with Measurements

  • Dale D. Ellis
  • D. M. F. Chapman
Part of the NATO Conference Series book series (NATOCS, volume 5)


Propagation loss data using explosive sources have been obtained over a 180 km track on the Scotian Shelf during both summer and winter conditions. The water depth varies between 55 and 75 meters over a sandy bottom. A sub-bottom model is discussed in the accompanying paper, “Propagation Loss Modelling on the Scotian Shelf: The Geo-acoustic Model”. In the present paper the bottom properties determined from the geo-acoustic model are used as part of the input to the DREA range-dependent normal mode program. The predictions from the normal mode calculations are compared with the summer and winter propagation loss measurements for a number of ranges, depths and frequencies. The difference between the calculations and measurements can be used to refine the geo-acoustic model.


Attenuation Coefficient Sound Speed Propagation Loss Summer Data Bottom Roughness 
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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • Dale D. Ellis
    • 1
  • D. M. F. Chapman
    • 1
  1. 1.Defence Research Establishment AtlanticDartmouthCanada

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