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METHOD FOR MONITORING A BURIAL DEPTH OF A SUBMARINE POWER CABLE | VERFAHREN ZUM BEOBACHTEN DER TIEFE EINES UNTERMEERISCHEN STROMKABELS | PROCÉDÉ POUR OBSERVER LA PROFONDEUR D'UN CABLE ÉLECTRIQUE SOUS-MARIN

Patentnummer:EP3514488B1
IPC Hauptklasse:G01B002108
Anmelder:
Erfinder:
Anmeldung:23.01.18
Offenlegung:23.01.18
Patenterteilung:22.07.20

Abstract / Hauptanspruch
A computer implemented method determines the burial depth (101) of a submarine power cable (104) under a sea bed (105) from a cable temperature curve (300) of the cable (104) measured along its length over time and from a temperature of seawater (103) in proximity of the cable (104) over time. The method comprising the steps of receiving the cable temperature curve (300) through a cable optical fibre (204); splitting the cable temperature curve (300) into a seawater temperature variation influence (400) and a cable heating influence (500) based on the seawater temperature profile; substracting from the cable heating influence (500) a soil-free cable heating influence (600), thereby obtaining a soil sea bed heating influence (700); and determining the burial depth (101) based on the soil sea bed heating influence (700).

EP3514488B1


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