Abstract
AbstractRecently, it has been known that submarine communication cables are frequently cut by submarine landslides and turbidity currents. When a cable failure occurred, the economic loss is vast for cable restoration coupled with temporary or permanent breach in the stop of the information transmission. The aim of this study is to use experimental approach to analyze and understand the mechanism and effect of submarine landslides on communication cables. Experiments were carried out considering for factors: (1) Effect of motion velocity of submarine landslide; (2) Effect of submarine landslide volume; (3) material composition of the landslide; and (4) Effect of different diameters of cable. Result obtained from the experiment shows that the impact force on the communication cable model is high for submarine landslides with low motion velocity. It was observed that a critical velocity exists for the impact force. The impact forces decreases until the velocity gets to the critical point, and then it turns to increase with the velocity. In addition, larger cables are subjected to larger impact forces. When the diameter of the cable is increased by 14 %, the impact force also increase by 50 %.KeywordsSubmarine landslidesTurbidity currentsCableImpact forceVelocityCable diameter
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