NPD Kicks Off Deep Sea Minerals Survey

Image Source: NPD

The Norwegian Petroleum Directorate (NPD) is starting data acquisition expedition for mineral deposits in the deeper areas of the continental shelf in western parts of the Norwegian Sea.

The NPD has engaged Swire Seabed, who partners with Ocean Floor Geophysics, to carry out mapping of potential sulphide minerals on the seabed over the Mohns Ridge. This is a spreading ridge in the Atlantic Ocean that separates two oceanic plates, where potential valuable minerals have been formed through hot volcanic sources.

The focus of the expedition is not the active hydraulic systems such as “black smokers”, but rather non-active extinct systems that are now left as mineral-rich piles of gravel on the seabed.

The mapping will be carried out using an autonomous underwater vehicle, a Kongsberg Hugin AUV, which maps the seabed using a number of instruments: bottom-penetrating echo sounder, multibeam bathymetry, synthetic aperture sonar data, magnetometry and spontaneous potential field data.

After the data is processed on board, mineral samples will be taken from the seabed where the data indicates the presence of deposits. Sampling will be carried out using an underwater ROV.

The expedition will be underway throughout August and into September.

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