Topics


Acoustic backscatter

Acoustic backscatter data give a useful indication of harder or softer areas of the seabed. MAREANO acquires multibeam backscatter data and these data  are invaluable in the production of classified sediment maps.

13.04.2016

Bathymetric mapping

The Norwegian Mapping Authority Hydrographic Service is responsible for acquiring bathymetric data in areas which are to be mapped by the MAREANO programme.

16.12.2014

Bioclastic sediments

Bioclastic sediments is a term used to describe carbonate rich sediments consisting of fragments/shells of dead organisms. On the continental shelf, we find bioclastic sediments with a high content of the remains of stony corals. These sediments form mounds and ridges in many places, which may be associated with live corals.

22.02.2016

Biodiversity

Biodiversity is a general term used to describe the diversity of life forms, species and the communities that they form.

18.12.2012

Environmental chemistry and pollution

The seabed receives contaminants from the environemnt, and sediments become a significant  storage place for pollutants. Sediments can therefore be a source of pollution in the fjords and of the uptake of contaminants by biota.

26.04.2013

Fish Communities

Fish communities in the Barents Sea.

03.04.2013

Hard and soft bottoms

Just like the land surface, the seabed varies in character, and ranges from bare rock and boulders to soft clay.

24.05.2016

How do we map biotopes?

The species on the sea floor are not evenly distributed: they appear in clusters associated with various environments and sea floor types. Each combination of certain species with a particular environment is known as a biotope, or “nature type”. It is important to know how species are distributed if you want to manage the sea floor as sustainably as possible.

29.10.2014

Marine landforms

A wide variety of landforms made by geological process are found on the sea bottom. The landforms tell us how the seabed is formed, and what sedimentation processes are active today.

05.04.2016

Marine landscape

MAREANO maps the large scale marine landscapes of the seabed. We use an automated GIS classification following the definitions of Naturtyper i Norge (NiN, Nature types in Norway).

04.04.2016

Marine landscape

A landscape of mountains and valleys is concealed deep beneath the water surface. Thanks to modern technology, it is possible to map this with great precision and to display terrain forms only a few metres in extent.

18.12.2012

Modelling of bottom currents

The bottom currents have a large impact on the sea floor and the animals that live there. It is difficult to measure the bottom currents over large areas, but improved models have now opened up the ability to estimate the bottom currents at reasonable accuracy. In MAREANO, the results are used in mapping the nature types.

22.04.2015

Sedimentary environment

The seabed is shaped slowly by a variety of geological processes, over thousands of years. The map of sedimentary environments shows which processes influence and shape the seabed we find today.

11.03.2016

Sediments (genesis)

The composition of sediments, the landforms they create, and where they are located, tell us which processes shaped the seabed as it is today.

16.03.2016

Sediments (grain size)

What types of material cover the sea floor? What makes some areas well-suited for corals and sponges to anchor to, while other areas are teeming in crabs and starfish? The bottom type is important characteristic of an area; therefore, NGU’s Sediments (grain size) map is our most requested product.

16.03.2016