Regional AEROMAG Surveys 1992-2013

The Regional AEROMAG 1992–2013 Surveys comprise a compilation of high-resolution airborne magnetic surveys acquired by GGU/GEUS between 1993 and 2013 and financed by the Government of Greenland. The overlapping surveys cover approximately 300,000 km² and include the total ice-free onshore areas and near-coastal offshore regions of West Greenland, South Greenland and southern East Greenland.

All surveys were acquired using aircraft with similar flight parameters, including line spacings of 500–1,000 m and cross-line spacing of approximately 5,000 m, and with flight altitudes of about 300 m above ground level or seafloor along gently draped surfaces. These consistent acquisition parameters allow the individual surveys to be integrated into a coherent, high-quality regional magnetic data compilation.

The total magnetic anomaly map was generated by merging grids from separately processed datasets using the grid-knitting module in Oasis Montaj. The data are IGRF-corrected but not reduced to the pole, and the crustal magnetic field model MF7 was used as a regional reference grid during compilation.

Simple

Date ( Publication )
2020-02-17
Identifier
dk.geus / grl_regional_aeromag_1992_2013
Author
  Geological Survey of Denmark and Greenland (GEUS) - Pedersen ( )
Presentation form
Digital map
Purpose
The purpose of the dataset is to provide a consistent, high-resolution regional compilation of airborne magnetic data to support geological interpretation, mineral exploration and geoscientific research in Greenland.
Status
Completed
Point of contact
  The Geological Survey of Denmark and Greenland (GEUS) - Mikael Pedersen ( )
Maintenance and update frequency
As needed
Point of contact
  The Geological Survey of Denmark and Greenland (GEUS) - GIS-support
Keywords ( Theme )
  • Dataset
  • Geophysics
  • Aeromagnetic
  • Airborne geophysics
  • Magnetic anomalies
  • Greenland
  • Mineral exploration
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 intended for regional geological interpretation and should be used with consideration of data quality, resolution and documented limitations of older surveys.
Spatial representation type
Grid
Denominator
100000
Metadata language
Da
Character set
UTF8
Topic category
  • Geoscientific information
  • Imagery base maps earth cover
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Supplemental Information
The dataset represents a compiled regional magnetic dataset in which individual surveys have been harmonised to a common reference framework. Data quality and level of detail may vary locally depending on survey year and acquisition conditions.
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:DOWNLOAD-1.0-http--download )

Download dataset from GEUS' Dataverse

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

Interactive map displaying the dataset.

OnLine resource
AEM / AEROMAG Surveys ( WWW:LINK-1.0-http--link )

Description about airborne geophysical surveys in Greenland conducted by GEUA/GGU from 1992 to 2013

OnLine resource
ArcGIS REST Service ( 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

The dataset is based on a series of airborne magnetic surveys acquired between 1993 and 2013 using aircraft-mounted magnetometers. Surveys were flown with comparable line spacing, cross-line spacing and flight altitude to ensure compatibility across datasets. Data acquisition was performed with GPS positioning and modern instrumentation.

Individual survey datasets were processed separately and subsequently merged into a regional compilation. Grid merging was performed using the grid-knitting module in Oasis Montaj, applying the crustal magnetic field model MF7 as a regional reference grid. The resulting magnetic anomaly data are corrected for the International Geomagnetic Reference Field (IGRF) but are not reduced to the pole.

While the overall data quality is high, some of the older datasets acquired in the early to mid-1990s contain residual levelling artefacts. Further reprocessing is recommended for applications involving higher-order magnetic derivatives.
File identifier
68b20f5e-7b28-4fa1-8ec2-e9dbbd196897 XML
Metadata language
Danskda
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2026-02-28T21:58:05.290284Z
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

Aeromagnetic Airborne geophysics Dataset Geophysics Greenland Magnetic anomalies Mineral exploration
Forskningsemner
Geoscience and history policy

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Associated resources

Not available