Seabed sediments (grain size), detailed

The data set shows the grain size composition in the upper part of the seabed sediments (upper 0-50 cm of the seabed). The attribute table for the data set provides information on the different grain size classes and which term is used based on the content of different fractions in sediments. By applying different symbologies designed to show the content of individual particle size fractions, the dataset can be displayed as a series of more specialized maps, e.g. Sediment mud content or Dominant grain size.

Simple

Date (Publication)
2005-08-15
Date (Creation)
0001-01-01
Date (Revision)
2025-03-14
Code
bunnsediment_kornstor_detalj
Purpose

Map showing sediments classified by grain size gives a good overview of the depositional environment and the nature of the seabed. By grouping grain size classes in a geologically reasonable way, the dataset can be visualized as other thematic maps, such as Sedimentation areas (areas where fine-grained sediments are deposited), and Diggability (sediments grouped and presented according to how easy it is to dig in the bottom).

Status
On going
Point of contact
Organisation name Individual name Electronic mail address Role

Geological Survey of Norway

Aave Lepland

Aave.Lepland@ngu.no

Publisher

Norges geologiske undersøkelse

Liv Plassen

Liv.Plassen@ngu.no

Point of contact

Geological Survey of Norway

Sigrid Elvenes

Sigrid.Elvenes@ngu.no

Owner
Maintenance and update frequency
As needed
GEMET - INSPIRE themes, version 1.0

  • Havområder
Nasjonal inndeling i geografiske initiativ og SDI-er

  • Inspire

  • Norway Digital

  • Geodata Act

  • Mareano

  • ØkologiskGrunnkart

  • MarineGrunnkart

  • Felles datakatalog
Nasjonal tematisk inndeling (DOK-kategori)

  • Geologi
Place

  • Norway

  • Hvaler

  • Froan

  • Fosnes

  • Oslofjorden

  • Andfjorden

  • Vågsfjorden

  • Sørøysundet

  • Rijpfjord

  • Kongsfjord

  • Nordfjord
Theme

  • deposition

  • sediment

  • exposed bedrock

  • bottom types

  • echo sounder

  • geology

  • gravel

  • habitat

  • sea

  • sea-bed

  • grain size

  • clay

  • superficial deposits

  • marine

  • marine geology

  • multibeams

  • surface sediment

  • sand

  • silt

  • mud

  • stone

  • submarine

  • sea-bed

  • sedimentation areas

  • digability

  • fjord

  • detailed

  • mapping

  • nature

  • nature type
Keywords

  • NGU

  • MAREANO

  • GEOS

  • HASUT

  • Marine Grunnkart i kystsonen
Spatial scope
Specific usage

This data set can be used as basis for decision making in the overall land use and environmental planning, habitat mapping, vulnerability analyzes, impact analysis in connection with installations on the seabed etc. Based on information about grain size distribution, other thematic maps can be developed, such as Diggability, Accumulation basins, anchoring conditions, etc.

User contact info
Organisation name Individual name Electronic mail address Role
Owner
Use limitation

The level of detail in the data set indicates use within the map scale: 1: 20,000 to 1: 150,000
Access constraints
Other restrictions
Other constraints
Åpne data
Use constraints
Other restrictions
Other constraints
Norsk lisens for offentlige data (NLOD)
Classification
Unclassified
Spatial representation type
Vector
Denominator
10000
Language
Norwegian
Topic category
  • Geoscientific information
N
S
E
W
thumbnail




Supplemental Information

The data set covers only certain areas in Norwegian fjords and seas near the coast, where various mapping projects have provided detailed information about the seabed. The data set contains areas that have been mapped at different levels of detail. The basiss for interpretation of this dataset is detailed digital bathymetry data, full-coverage accoustic reflectivity data and shallow seismic, as well as underwater photos and videos and sediment samples of the seabed. There are several ready-made symbolization files in Digital Cartography, which can be used to display grain size data as more specialized maps.

Unique resource identifier
EPSG:25832
Unique resource identifier
EPSG:25833
Unique resource identifier
EPSG:25835
Unique resource identifier
EPSG:32632
Unique resource identifier
EPSG:32633
Unique resource identifier
EPSG:32635
Unique resource identifier
EPSG:4326
Distribution format
Name Version

FGDB

SOSI

4.5

GML

3.2

FGDB

GML

SOSI
OnLine resource
Protocol Linkage Name

GEONORGE:DOWNLOAD

 		https://nedlasting.ngu.no/api/capabilities/
Hierarchy level
Dataset

Domain consistency

Conformance result

Title

COMMISSION REGULATION (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication)
2010-12-08
Title

inspire
Date
Explanation

The dataset is established according to national specifications.
Pass
No

Conformance result

Title

SOSI produktspesifikasjon: Bunnsedimenter kornstørrelse
Date (Publication)
2022-05-06
Title

sosi
Date
Explanation

The data is not evaluated according to the product specification

Domain consistency

Conformance result

Title

Sosi applikasjonsskjema
Date (Publication)
2022-05-06
Title

uml-sosi
Date
Explanation

SOSI files are not evaluated according to application form

Conformance result

Title

Sosi applikasjonsskjema
Date (Publication)
2022-05-06
Title

uml-gml
Date
Explanation

GML files are not evaluated according to application form

Completeness omission

Name of measure
Prosentvis dekning i forhold til datasettets utstrekning
Measure description

Datasettets faktiske kartlagte areal i forhold til datasettets spesifiserte utstrekning

Quantitative result

Value
5

Completeness omission

Name of measure
Prosentvis oppfyllelse av FAIR-prinsipper
Measure description

Angir fullstendighet i forhold til krav fra FAIR-prinsippene (The FAIR Guiding Principles for scientific data management and stewardship)

Quantitative result

Value
95
Statement

The dataset has been interpreted and digitized by NGU. The source data for interpretations is data from the Norwegian Geological Survey (NGU), the Norwegian Mapping Authority (SKS), the Institute of Marine Research (HI), the Norwegian Defence Research Establishment (FFI). Grain size data is based on interpretation of video of the seabed, interpretation of digital reflectivity data, as well as interpretation of analogue and digital seismic data. Acoustic data and video are verified with analyses of sediment samples. Detailed bathymetry data has been included to support the interpretation. Seabed sediments (grain size) has been digitized and prepared using ArcGIS tools. The methodology is described in the ‘Målemetode’ and ‘Geopåvisningtype’ fields.

Metadata

File identifier
79f0f17d-9f62-456d-b1a9-2a8c754c51c4 XML
Metadata language
Norwegian
Parent identifier
Bunnsedimenter - kornstørrelse

42576a01-08c0-4d05-a33f-5f6143857b56
Hierarchy level
Dataset
Date stamp
2025-05-08
Metadata standard name

ISO19115
Metadata standard version

2003
Metadata author
Organisation name Individual name Electronic mail address Role

Geological Survey of Norway

Janne Grete Wesche

metadataansvarlig@ngu.no

Point of contact
Other language
Language Character encoding
English UTF8
 
 

Overviews

overview
thumbnail

Spatial extent

thumbnail

Keywords

bottom types clay deposition detailed digability echo sounder exposed bedrock fjord geology grain size gravel habitat mapping marine marine geology mud multibeams nature nature type sand sea sea-bed sea-bed sediment sedimentation areas silt stone submarine superficial deposits surface sediment


Provided by

Access to the catalogue