ANDERSON: BOTTOM PROPERTIES FOR LONG-RANGE PROPAGATION PREDICTION 



In all of your graphs it is very hard to see a quarter of a 

 dB and in order to make significant calculations, we need bottom loss 

 to a quarter dB. 



I think that this may mean that the way to get it is to make 

 measurements of propagation and deduce backwards what the bottom 

 loss must have been rather than to try to calculate it or make direct 

 measurements of bottom loss. 



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