• Geus Geonetworks metadata catalogue
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AEM 1994-1998 Surveys

The AEM Greenland 19941998 are detailed surveys with combined electromagnetic and magnetic measurements that were carried out within a collaboration between GEUS/GGU and the Greenland Government in six selected areas of expected high mineral potential in Greenland. In total, 75 000 line km covering an area of 23 000 km² were measured in the project. Line spacing was 200 400 m (inline direction) and flight altitudes were typically around 120 m. With exception of one survey the collected electromagnetic data were time-domain data (GEOTEM system).

Simple

Date (Creation)
2020-02-20
Identifier
dk.geus: / aem_1994_1998_surveys
Presentation form
Digital map
Purpose
The project was initiated and designed to encourage mineral exploration at that time. Presented maps are based on data processed by GEUS.
Status
Completed
Point of contact
  Geological Survey of Denmark and Greenland (GEUS) - Björn H. Heincke
Oster Voldgade 10 , Copenhagen , 1350 K , Denmark
Custodian
  Geological Survey of Denmark and Greenland (GEUS) - Simun Olsen Dalsenni
Maintenance and update frequency
As needed
GEMET - INSPIRE themes, version 1.0
  • Geology
Keywords
  • Total magnetic intensity
  • Aeromagnetic
Continents, countries, sea regions of the world.
  • Greenland
Access constraints
Copyright
Use constraints
Copyright
Other constraints
No limitations on public access
Other constraints
Conditions for Re-use of data https://data.geus.dk/geusmap/terms_20140620.pdf
Spatial representation type
Grid
Denominator
200000
Distance
100  m
Metadata language
English
Topic category
  • Geoscientific information
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Reference system identifier
EPSG / https://epsg.io/32624
Geometric object type
Surface
Distribution format
  • Web Service ( 1.0 )

Distributor
  Geological Survey of Denmark and Greenland (GEUS) - Christian Brogaard Pedersen
Oster Voldgade 10 , Copenhagen , 1350 K , Denmark
OnLine resource
Interactive map ( WWW:LINK-1.0-http--link )

Greenland Portal

OnLine resource
Web page ( WWW:LINK-1.0-http--link )

Geophysical mapping info page

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

Geophysics magnetic AEM compilation

Hierarchy level
Dataset

Conformance result

Date (Publication)
2010-12-08
Explanation
This field has no significance
Pass
No
Statement
Due to the dense line spacing (200 - 400 m) and low altitudes, the magnetic datasets have generally high resolution. However, the quality of the processing is variable and some of the resulting magnetic datasets show remaining leveling artefacts in the higher order derivatives (status: Feb 2020). For these datasets re-processing is recommended. The time-domain electromagnetic were acquired with a system from the 90s, whose data quality and resolution is not comparable with the ones of modern systems. In one of the surveys (AEM96), also radiometric, VLF and frequency domain data were collected. The quality of the radiometric data is poor and options for reprocessing are lacking because the spectral raw data are not available
File identifier
b88bc17f-65dd-46ff-836c-29f3bd3894c6 XML
Metadata language
English
Hierarchy level
Dataset
Date stamp
2023-09-08T14:09:37
Metadata standard name
ISO 19115:2003 / ISO 19139:2007
Point of contact
  Geological Survey of Denmark and Greenland (GEUS) - Metadata contact person
Oster Voldgade 10 , Copenhagen , 1350 K , Denmark
 
 

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Keywords


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