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Gravity surveys are used to detect underground density structures. Hybrid survey configurations using a gravimeter and a gravity gradiometer are particularly effective in this regard. A gravity gradiometer was developed for use in hybrid gravity surveys of massive subseafloor deposits. Its performance was evaluated in an ocean-based trial using an autonomous underwater vehicle (AUV). The gradiometer...
Gravity surveys are useful for profiling underground density structures. We propose a hybrid gravity survey method using gravimeters and gravity gradiometers to detect submarine ore deposits, such as massive sulfides buried below the seafloor. This paper describes a gravity gradiometer, which can be implemented in an AUV (Autonomous Underwater Vehicle) for this purpose. We developed a new gravity...
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