Marine limit WMS

The map service consists of individual map layers showing Marine limit and Possibility of marine clay. Marine limit indicates the highest level reached by sea after last glaciation. Marine limit therefore indicates the highest levels of marine sediments (marine and fjord provisions) that are raised to dry land. Data for Marine limit consists of point registrations, lines and polygons. The map service also contains the Possibility of marine clay that is derived from marine limit and superficial deposits, showing where marine clay can potentially be found - either up in the day or under other types of soils/superficial deposits.

Identification info

Date (Creation): 2020-02-18

Date (Publication): 2020-02-18

Date (Revision): 2020-02-18

Purpose: Information about marine limit is central in the work of delimiting areas with marine clay in Norway. Issues involving such deposits may be excluded over the marine limit, which is important information in i.a. public planning. Possibility of marine clay can be regarded as an overall chart of care for marine clay. The map service can also be used as basis for susceptibility maps for landslides, quick clay and more.

Status: On going

Publisher

Geological Survey of Norway -

Owner

Geological Survey of Norway - Louise Hansen

Maintenance and update frequency: Weekly

Nasjonal inndeling i geografiske initiativ og SDI-er

National public data catalog
dataNorgeNo
ØkologiskGrunnkart

Nasjonal tematisk inndeling (DOK-kategori)

Geology

Place

Norge

Theme

Marine limit
Possibility of marine clay
Possible marine clay
Quaternary geology
Superficial deposits
Geologicial Survey of Norway

COMMISSION REGULATION (EC) No 1205/2008 of 3 December 2008 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards metadata, Part D 4, Classification of Spatial Data Services

infoMapAccessService

Specific usage: Information about marine limit is central in the work of delimiting areas with marine clay in Norway. Marin limit indicates the highest level of marine sediments deposited on land. Issues involving such deposits may be excluded over the marine limit, which is important information in i.a. public planning. For example, quick clay and landslides in marine fine-grained deposits and fjord deposits as marine clay only occur under marine limit. Furthermore, groundwater quality below marine limit can be affected by relict salt water and clay can limit the spread of aquifers.

Possibility of marine clay can be regarded as an overall chart of care for marine clay. The map service can also be used as basis for susceptibility maps for landslides, quick clay and more.

Owner

Use limitation: Arealer for mulighet for marin leire (MML) bør alltid sees sammen med arealer for marin grense (MG). Les mer om MG og MML inklusive bruk og usikkerheter på ngu.no under fagområder/kvartærgeologi/marin grense.

Access constraints: Other restrictions

Other constraints: Åpne data

Use constraints: Other restrictions

Other constraints: Norsk lisens for offentlige data (NLOD)

Service Type: view

Ordering instructions: https://register.geonorge.no/metadata-kodelister/norge-digitalt-tjenesteerklaering/norge-digitalt-tjenesteerklaering-b/ded2e9ed-ce25-494f-ae29-caad2eb015d3

Begin date: 0001-01-01

Coupling Type: Tight

Contains Operations

No information provided.

Operates On

Distribution format

OGC:WMS ()

OnLine resource: http://geo.ngu.no/mapserver/MarinGrenseWMS3?REQUEST=GetCapabilities&SERVICE=WMS ( OGC:WMS )

Hierarchy level: Service

Other: service

Statement: MG registreringene er basert på litteratur, geologiske kart og observasjoner i felt av erfarne geologer. Beskrivelse av hva MG er, av parametere i databasen og usikkerheter knyttet til MG registreringene er gitt i NGU rapport 2012.063.

I 2020 ble det gjennomført en revidering av databaseinnholdet for å klargjøre datasettet til en ny, landsdekkende modellering av MG og tidligere havdekte områder. Dette innbar en kvalitativ vurdering av hver enkelt MG-registrering, for eksempel basert på LiDAR-data, noe som har ført til at flere punkter er blitt utelatt fra den landsdekkende modelleringen. Terrengmodellen som er benyttet i MG analysen har oppløsning (rutenettstørrelse) på 10x10 meter, og er hentet fra hoydedata.no. Terrengmodellen er generert ut fra de detaljerte laserdata som var tilgjengelig høsten 2020, supplert med høydedata fra 2013-utgaven av DTM10 for områder uten dekning.