OCEANOGRAPHIC INFORMATION FOR SUBMARINE CABLES 



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barriers. The arrows show some modern turbidity currents which have 

 been documented through the breakage of telegraph cables. This chart 

 is not yet complete and it is expected that many more arrows can be 

 added, each representing one or more currents, and some representing 

 as many as 20 documented cases. 



Areas which have experienced turbidity current flows in the past can 

 be determined by a careful study of the nature of the bottom. From a 

 study of sediments and topography of areas along a proposed route it is 

 possible to delimit areas where turbidity current could and could not 



Fig. 27 — Cable breaks in the submarine canyons off the Magdalena River, 

 Colombia, South America. 



