Greenland magnetic compilation (GREENMAG)

The development of the new magnetic compilation for Greenland (GREENMAG) was initiated in 2021 by the Satellite and Aerogeophysics group at Christian-Albrechts-University (CAU) in Kiel, Germany, in collaboration with GEUS as part of the ESA project GOCE+Greenland. The presented magnetic anomaly map covers all of Greenland, including the Inland Ice and adjacent shelf areas. The map is based on all available modern regional aeromagnetic surveys from Greenland and also includes satellite-based magnetic data where airborne data are not available. The purpose of the compilation is to provide a consistent regional magnetic anomaly map for use in geological interpretation and geoscientific analyses.

Identifikation

Titel: Greenland magnetic compilation (GREENMAG)

Offentliggørelsestidspunkt

Dato (Publication): 2025-08-05

Ansvarlig myndighed og kontaktoplysninger

Kontakt vedr. service

Organisationsnavn	E-mail adresse	Rolle
The Geological Survey of Denmark and Greenland (GEUS)	nsk@geus.dk	Point of contact

Metadata author

Organisationsnavn	E-mail adresse	Rolle
The Geological Survey of Denmark and Greenland (GEUS)	gis-support@geus.dk	Point of contact

Geografisk udstrækning

Koordinatsystem: WGS 84 / UTM 24N (EPSG:32624)

Nøgleord

Nøgleord: Dataset

Nøgleord: Greenland

Nøgleord: Magnetics

Nøgleord: Geophysics

Nøgleord: Anomaly

Nøgleord: Aeromagnetics

Type: Theme

Nøgleord: Tectonics and structural geology

Type: Theme

Titel: Forskningsemner

Dato (Publication): 2025-11-03

Kode: geonetwork.thesaurus.local.theme.GEUSResearchTopics

Nøgleord: Greenland

Type: Place

Titel: Geografisk

Dato (Publication): 2025-12-11

Kode: geonetwork.thesaurus.local.place.Geoplaces_SKOS_da_en

Kvalitet

Type som metadata beskriver: Dataset

Beskrivelse: Both data density and quality of the aeromagnetic datasets used vary. Modern high-resolution AEROMAG and AEM surveys have inline spacing of 200–1000 m and good to excellent data quality. The TGS-NOPEC datasets and the offshore surveys along the coast of North Greenland from BGR, GSC, AWI and/or DTU are also systematically acquired and are generally characterised by good quality data. Older datasets such as GICAS and EASTMAR were acquired without GPS positioning, and some datasets are affected by limitations related to base-station correction. Other datasets have only coarse line spacing (e.g. GAP92/92) or consist of irregularly flown profiles (e.g. ICEBRIDGE). Differences in data quality and data density have been taken into account in the compilation.

Overviews

Spatial extent

Provided by

Access to the portal

Read here the full details and access to the data.

Simple