The dataset is a collection of landforms and phenomena in and on the seabed caused by natural gas in the seabed sediments. Shallow gas can originate from both sedimentary rocks and overlying sediments. Typical landforms are pockmarks and diapirs, but shallow gas are also displayed as strong reflectors (bright spots) or gas blanking on seismic profiles. Gas leakage from the seabed has great ecological significance for plant and animal life in the sea, e.g. it is typical with bacterial mats occur around such places. Gas and gas hydrates in the sub-seabed sediments also have an impact on seabed stability and climate change.

The dataset is a collection of landforms and phenomena in and on the seabed caused by natural gas in the seabed sediments. Shallow gas can originate from both sedimentary rocks and overlying sediments. Typical landforms are pockmarks and diapirs, but shallow gas are also displayed as strong reflectors (bright spots) or gas blanking on seismic profiles. Gas leakage from the seabed has great ecological significance for plant and animal life in the sea, e.g. it is typical with bacterial mats occur around such places. Gas and gas hydrates in the sub-seabed sediments also have an impact on seabed stability and climate change.

The dataset is a collection of landforms and phenomena in and on the seabed caused by natural gas in the seabed sediments. Shallow gas can originate from both sedimentary rocks and overlying sediments. Typical landforms are pockmarks and diapirs, but shallow gas are also displayed as strong reflectors (bright spots) or gas blanking on seismic profiles. Gas leakage from the seabed has great ecological significance for plant and animal life in the sea, e.g. it is typical with bacterial mats occur around such places. Gas and gas hydrates in the sub-seabed sediments also have an impact on seabed stability and climate change.

The map service shows submarine landforms related to landslides on the seabed as well as natural phenomena that can cause instability in the seabed and thus pose a danger to underwater installations and/or exposed coastal areas.

The map service shows submarine landforms related to landslides on the seabed as well as natural phenomena that can cause instability in the seabed and thus pose a danger to underwater installations and/or exposed coastal areas.

Diapirs observed and/or registrered on seismic lines on or in the seabed, in Norwegian waters.

Boundaries of polygon features of geohazards indicate whether the feature is observed on the seabed or located deeper in the sediments or underlaying bedrock (burried).

Submarine slides in Norwegian seas and coastal areas.

The map service shows submarine landforms related to landslides on the seabed as well as natural phenomena that can cause instability in the seabed and thus pose a danger to underwater installations and/or exposed coastal areas.