| Based on survey with multibeam system, side scan sonar, subbottom profiler, magnetometer, gravity core sampler and other data obtained in the route survey area of Pacific Light Cable Network System China Segment, we analyzed and evaluated the natural environment and engineering geologic conditions in the route area in details including: seabed terrain is flat and the average slope is less than 2°;the route crosses clay/silt gravel gravel/consolidated sand seabed areas, slight bad geomorphic factors such as sand waves pit erosion ditch etc. ,the route area is suitable for cable laying . But in the region between continental shelf and continental slope the condition is undulating, with a maximum drop of 500m, Submarine canyon trench erosion valley scarp etc., are found in the route area, After adjusting the route in the area where condition is relatively worse, and appropriate measures should be taken before laying. The conclusion is that the natural and engineering environment of the submarine light cable route area is suitable for cable laying. |
