The dataset shows the distribution of landforms and phenomena in and on the seabed caused by gas in sedimentary rocks or in overlying sediments. Although not all sea areas have been mapped in detail and thoroughly, we see that shallow gas-related landforms and phenomena are very common, especially in the sea areas, but also along the coast and in many fjords. Shallow gas must be taken into account in development and installations, as well as environmental studies and evaluation of the ecosystem.

Gas hydrates and shallow gas have an impact on seabed stability, climate change and ecological diversity on the seabed, at the same time when it is considered as a geological resource due to its high methane content. The knowledge on these can be used by the oil industry in hydrocarbon exploration.

Detaljnivået på datasettet tilsier bruk innenfor kartmålestokken: 1:100.000 - 1:500.000.

The source data for interpretation for this data set is mainly detailed bathymetry data and seismic. The degree of detail and which phenomena have been mapped vary considerably from place to place.

Hele landet

ISO19115

2003