DETERMINING AN ELECTRIC FIELD BASED ON MEASUREMENT FROM A MAGNETIC FIELD SENSOR FOR SURVEYING A SUBTERRANEAN STRUCTURE

摘要

To perform a survey of a subterranean structure behind a subsea surface, at least one sensor module is provided in a subsea environment, where the at least one sensor module comprises at least one magnetic field sensor. Measurement data is received from the magnetic field sensor, and an electric field along a particular direction-is determined based on the measurement data to perform the survey of the subterranean structure, wherein the particular direction is generally orthogonal to the subsea surface.