£M COMMUNICATION 

 MODULES 



GROUND LINE 



^CONDUCTING 

 ARMOURED CABLED 



CONCRETE^ 

 .BLOCK 



The atmospheric pressure-measuring system operating in situ with the satellite uplink, the 

 electromagnetic (EM) link, and the submerged tide gauge. 



FEBRUARY 1990/SEA TECHNOLOGY 



Figure 8. Canadian Developments 



26 



