Hydrographic survey data

Hydrographic survey data is the most detailed depth data that the Norwegian Mapping Authority, Hydrographic Service has. This data has been collected by mapping the seabed in Norwegian coastal and sea areas.

Detailed depth data for large areas of the coast has been gathered using multibeam echo sounders. Only older surveys with less detailed resolution are available for other areas. Older data is being replaced regularly as new data is collected.

Hydrographic survey data includes several types of depth information. The main products are point data with position and depth (.xyz), in addition to log data (.all). For more recent surveys, log data containing backscatter information and water column data (.wcd) is also available.

Date (Revision): 2017-10-05

Date (Creation): 2015-01-12

Date (Publication): 2015-01-12

Code: dybdedata_raadata

Purpose: These data are used as basis for the Norwegian Hydrographic Service's digital and analog chart products and are very detailed. Data inside the territorial limit of 12 nautical miles are subject to military restrictions. This means that data more dense than 50x50 meter between the nodes are defined as classified information in coastal areas.

Status: On going

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Kartverket	Kartverket FMT-Sjø	sjodata@kartverket.no	Point of contact
Norwegian Mapping Authority		kundesenter@kartverket.no	Publisher
Norwegian Mapping Authority		kundesenter@kartverket.no	Owner

Maintenance and update frequency: Continual

GEMET - INSPIRE themes, version 1.0

Havområder

Nasjonal inndeling i geografiske initiativ og SDI-er

Norway Digital
Mareano
Modellbaserte vegprosjekter
Felles datakatalog

Nasjonal tematisk inndeling (DOK-kategori)

Kyst og fiskeri

Place

Norway's inner coastal waters
Svalbard's inner coastal waters
Barents Sea
Norwegian Sea
North Sea
Skagerrak

Theme

sea
soundings
survey data
original hydrographic chart
banks, shoals, shallows
underwater rocks
coast
MAREANO

Keywords

Norwegian Mapping Authority, Hydrographic Service

Specific usage: Routing for submarine cables, pipelines, subsea tunnels, etc. development in sea areas or the coastal zone. Different types of thematic map. Petroleum activity. Modelling of sea currents, sea level rise, marine contamination, etc. Fishing and aquaculture. Mapping of seabed conditions, marine vegetation, conservation areas, etc. Emergency response, search and rescue. Archaeological surveys. Please send an email to sjodata@kartverket.no for all communication and to order hydrographic survey data.

User contact info

Organisation name	Individual name	Electronic mail address	Role
			Owner

Use limitation: The data is not approved for navigational purposes. Data inside the territorial limit of 12 nautical miles are subject to military restrictions. This means that data more dense than 50x50 meter between the nodes are defined as classified information in coastal areas.

Access constraints: Other restrictions

Other constraints: Skjermede data

Use constraints: Other restrictions

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

Other constraints: Interested parties can send a request to the Norwegian Hydrographic Service for release of hydrographical survey data by e-mail to sjodata@kartverket.no.

Classification: Confidential

User note: https://lovdata.no/dokument/NL/lov/2017-06-21-88

Spatial representation type: Vector

Denominator: 5000

Language: Norwegian

Topic category

Oceans

Supplemental Information: Internet pages for this type of data: https://www.kartverket.no/en/data/kartdataer/Marine-Geospatial-Data/Hydrographic-Survey-Data/ and https://www.kartverket.no/en/data/kartdataer/Marine-Geospatial-Data/Marine-Primary-Data/

Contact information: sjodata@kartverket.no, tel.: (+47) 32 11 80 00

Unique resource identifier: EPSG:4326

Spatial representation info

No information provided.

Distribution format

Name	Version
ASCII x,y,z

Distributor

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Kartverket	Kartverket FMT-Sjø	sjodata@kartverket.no	Distributor

Distributor format

Name	Version
SOSI v3.2
shape
xyz
papir

OnLine resource

Protocol	Linkage	Name
GEONORGE:OFFLINE	https://wms.geonorge.no/skwms1/wms.dekning_sjomaaling?

Hierarchy level: Dataset

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: 63

Statement: In the case of modern data collected using multibeam echo sounders, the resolution will vary between 1m x 1m grids close to the coast for more recent surveys, or, as point data, with even higher resolution. Modern surveys that are slightly older, or were carried out in deeper waters, will frequently have a slightly lower resolution, typically from 3m x 3m to 10m x 10m. For older data collected using equipment such as single beam echo sounders, hand lead or machine lead, the resolution will typically be 20-50m between each recorded depth point in shallow, coastal areas. The resolution is even lower in the middle of fjords.