Terrain models of the seabed DTM 25m

The dataset shows terrain variations on the seabed. These terrain models have been produced by using high quality hydrographic survey data. \\nThe data in this dataset, which are close to the shoreline, includes some coverage in Central Norway (large areas in Hordaland, and otherwise, certain areas in the counties of Sogn and Fjordane, Møre and Romsdal, and Trøndelag). But the dataset has the best coverage in the areas in Northern Norway, with almost continuous coverage north of 67 degrees. In areas farther from the shore, the coverage is largely dependent on the surveys organized by the MAREANO program (for more information: www.mareano.no/en). MAREANO has surveyed the ocean areas along the coast of all of these northern counties: Møre and Romsdal, Trøndelag, Nordland, Troms, and Finnmark; plus the eastern part of the Barents Sea, and, in addition, certain areas around Svalbard. The coverage area is being extended continuously and the data is updated whenever new hydrographic surveys are finished being processed. The resolutions of the terrain models are 25m x 25m. Partners in Norge Digital have the possibility of downloading data from the Norge Digital downloading service. Other users must request the data by sending an application or an order to: sjodata@kartverket.no.

Date (Publication): 2015-01-30

Date (Creation): 2015-01-30

Date (Revision): 2025-03-26

Code: dybdegrid_25

Purpose: This dataset, which contains terrain models of the seabed, shows the variations in the terrain on the seabed. These terrain models have been produced by using high quality hydrographic survey data.

Status: Required

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Kartverket Sjødivisjon	Per Arvid Jakobsen	sjodata@kartverket.no	Point of contact
Norwegian Mapping Authority		kundesenter@kartverket.no	Publisher
Norwegian Mapping Authority		kundesenter@kartverket.no	Owner

Maintenance and update frequency: Weekly

GEMET - INSPIRE themes, version 1.0

Høyde

Nasjonal inndeling i geografiske initiativ og SDI-er

Beredskapsbase
NSDI data
Geodata Act
Norway Digital
Mareano
Felles datakatalog

Nasjonal tematisk inndeling (DOK-kategori)

Basis geodata

Place

Norway
Northern Norway
Inner coastal waters
Sea
Nautical data
Barents Sea
Norwegian Sea

Theme

Ocean
DTM
3D
MBE
Multibeam
Multibeam
Terrain model
Digital terrain model
Sea
Coast
Grid
Depth
Ocean depths
Sea depths
Ocean floor
Seafloor
Depth data
Bathymetry
Barents Sea
Norwegian Sea

Keywords

MAREANO
Norwegian Mapping Authority, Hydrographic Service
KVSD

Specific usage: This dataset is suitable for planning at the detail level. This data is frequently used for planning the routes for submarine cables, pipelines, and subsea tunnels, etc.; planning of the development of harbour areas or the coastal zone; different types of thematic maps; petroleum activities; modelling of ocean currents, sea level changes, and marine pollution, etc.; fishing and aquaculture; mapping of seabed conditions, marine vegetation, and conservation areas, etc.; and emergency response planning, and in search and rescue operations.

User contact info

Organisation name	Individual name	Electronic mail address	Role
			Owner

Use limitation: There are no restrictions on use. Members of Norway Digital, the national geographical infrastructure, can download all open data from the Norwegian Hydrographic Service at this Internet address: http://data.kartverket.no/download/content/geodataprodukter?korttype=3631&aktualitet=All&datastruktur=All&dataskema=All

Access constraints: Other restrictions

Other constraints: Åpne data

Use constraints: Other restrictions

Other constraints: Creative Commons BY 4.0 (CC BY 4.0)

Other constraints: The 25x25 meter grids are defined as classified information inside the Norwegian territorial limit of 12 nautical miles. If a customer wants access to such data, the Norwegian Hydrographic Service can apply for permission from the Norwegian Armed Forces, on behalf of the customer. The application will normally be approved on the condition that the data is returned/destroyed within five years.

Classification: Unclassified

Spatial representation type: Grid

Distance: 25 m

Language: Norwegian

Topic category

Oceans

Supplemental Information: This dataset is organized as areas of 30X30 minutes, i.e. ENC D-cells, in ASCII files in EUREF89 datum and (most often) UTM zone 33 coordinates (source: https://www.kartverket.no/en/data/kartdataer/Marine-Geospatial-Data/Terrain-Models-of-the-Seabed/). The exceptions to the UTM33 deliveries are in the Hordaland county and in the Trondheim fjord, which are delivered in UTM zone 32. It is possible to obtain the datasets in geographical coordinates as well, but at the present time only by direct contact to sjodata@kartverket.no. If you need assistance in downloading and/or using data from the Norwegian Hydrographic Service, please read our tips and guidance on kartverket.no, especially: https://www.kartverket.no/en/data/kartdataer/Marine-Geospatial-Data/Terrain-Models-of-the-Seabed/ in English; or in Norwegian: https://www.kartverket.no/data/kartdataer/Dybdedata/Terrengmodeller-havbunn/ .\\nQuestions and inquiries should be sent to: Customer Service Center: kundesenter@kartverket.no, tel: (+47) 32 11 80 00.

Unique resource identifier: EPSG:25833

Unique resource identifier: EPSG:4326

Spatial representation info

No information provided.

Distribution format

Name	Version
ENH
NED
TIFF
XYZ
ENH (Furuno)
NED (Olex)
TIFF
XYZ

Distributor

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Kartverket Sjødivisjon	Per Arvid Jakobsen	sjodata@kartverket.no	Distributor

Distributor format

Name	Version
ASCII	N/A

Units of distribution: cellevis,

OnLine resource

Protocol	Linkage	Name
GEONORGE:DOWNLOAD	https://nedlasting.test.geonorge.no/api/capabilities/

Hierarchy level: Dataset

Conformance result

Title: SOSI produktspesifikasjon: Sjø terrengmodeller

Date (Publication): 2018-10-26

Title: sosi

Date

Explanation: The data is according to the product specification

Pass: Yes

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: 98

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: 100

Statement: Bathymetric is modelled and compiled into terrain models, in cells of size 0.5 x 0.5 degrees (D-cells). Models with 1 or 2 meters resolution are compiled in cells of 0.25 x 0.25 degrees (EFGH-cells). The coastline is not integrated into the modelling process, therefore, some overlap with land may occur. In cases of overlapping data, priority is given based on resolution and the time of measurement. The terrain models are checked for step effects in the overlap zones between datasets and for regularities such as noise and spikes. Modelling is done in different resolutions. The standard resolutions are 1m, 2m, 5m, 10m, 25m, and 50m, which are made available to Mareano partners, while 5m, 25m, and 50m are also made available through Geonorge.