The surrounding environment of the submarine cable is complicated and changeable, which directly affects the operating temperature of the submarine cable. It is necessary to analyze the change regulation of the submarine cable operating temperature, so as to forecast the overload capacity of the submarine cable with the actual situation. From the theoretical view, various aspects of the submarine cable operating temperature are discussed. And the temperature data from submarine cable temperature on-line monitoring system about 8 days are recorded and researched, combined with the load and current changes, depth and tidal changes, the change regulation about the operating temperature submarine cable are analyzed.
KEY WORDS :submarine cable;operating temperature;tide;depth;
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