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.

Simple

Date ( Publication )
2025-08-05
Identifier
dk.geus / dk_greenmag_magnetic_compilation
Author
  Kiel University (CAU) - Jörg Ebbing ( )
Author
  Kiel University (CAU) - Wolfgang Szwillus
Author
  The Geological Survey of Denmark and Greenland (GEUS) - Björn H. Heincke
Presentation form
Digital map
Purpose
The purpose of the dataset is to provide a consistent magnetic compilation (magnetic anomaly map) with full coverage of Greenland for use in geological interpretation and geoscientific analyses.
Status
Completed
Point of contact
  The Geological Survey of Denmark and Greenland (GEUS) - Nina Skaarup ( )
Maintenance and update frequency
As needed
Point of contact
  The Geological Survey of Denmark and Greenland (GEUS) - GIS-support
Keywords ( Theme )
  • Dataset
  • Greenland
  • Magnetics
  • Geophysics
  • Anomaly
  • Aeromagnetics
Forskningsemner Forskningsemner ( Theme )
Geografisk Geografisk ( Place )
Access constraints
Other restrictions
Use constraints
Other restrictions
Other constraints
CC BY 4.0
Other constraints
The dataset is a compilation based on multiple sources with varying data density and data quality. Use should consider the documented differences between contributing datasets.
Spatial representation type
Vector
Spatial representation type
Grid
Denominator
100000
Metadata language
Da
Character set
UTF8
Topic category
  • Geoscientific information
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Supplemental Information

GREENMAG is a magnetic compilation integrating multiple aeromagnetic datasets with varying density and quality. The dataset should be used together with information about contributing datasets and data quality for detailed analyses.

If the content of the magnetic map is used in scientific contributions, it should be cited as: "Björn H. Heincke, Wolfgang Szwilius, Judith Freienstein, Jörg Ebbing, Carmen Gaina, Antonia Ruppel, Yixiati Dilixiati & Agnes Wansing (2025). A new magnetic anomaly map for Greenland based on a combination of equivalent source modeling and spherical harmonic expansion. ESSD. 18, 1943–1967, https://doi.org/10.5194/essd-18-1943-2026"
Reference system identifier
WGS 84 / UTM 24N (EPSG:32624)
Distribution format
  • WMS ( )

  • REST ( )

Distributor
  The Geological Survey of Denmark and Greenland (GEUS) - GIS-support
OnLine resource
Download ( WWW:LINK-1.0-http--link )

Download dataset from GEUS' Dataverse

OnLine resource
Interactive webmap ( WWW:LINK-1.0-http--link )

Interactive map displaying the dataset.

OnLine resource
Geophysics_Aeromag_Magnetic ( ESRI:REST )

ArcGIS REST Service

OnLine resource
all_aeromag1992_2013 ( OGC:WMS-1.3.0-http-get-capabilities )

ArcGIS WMS Service

Hierarchy level
Dataset
Statement
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.
File identifier
d632a262-3316-4c60-8c67-71fc53367334 XML
Metadata language
Danskda
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2026-04-08T14:40:09.846049Z
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0
Point of contact
  The Geological Survey of Denmark and Greenland (GEUS) - GIS-support ( )
 
 

Overviews

overview

Spatial extent

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Keywords

Aeromagnetics Anomaly Dataset Geophysics Greenland Magnetics
Forskningsemner
Tectonics and structural geology

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Associated resources

Not available