• Geus Geonetworks metadata catalogue
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Northeast Greenland Aster Data

A series of Aster band ratios highlighting mineral distributions. Band ratio color composite images to distinguish variability of lithology in the area. Preprocessing of the Aster scenes encompasses atmospheric, radiometric and topographic corrections before masking non-outcrop pixels and generating the final mosaic. The calibrated radiance data is converted to apparent surface reflectance using a radiative transfer program, Atmospheric and Topographic Correction (ATCOR-3), in rugged terrain mode. The ATCOR rugged terrain mode utilizes a surface elevation model to adjust illumination levels. Calibration and adjusting the apparent surface reflectance values from the ATCOR-3 processing was not feasible due to lack of ground-based reflectance measurements.

Simple

Date (Publication)
2019-03-01
Identifier
dk.geus: / neg_aster
Presentation form
Digital map
Status
Completed
Distributor
  Geological Survey of Denmark and Greenland (GEUS) - Christian Brogaard Pedersen
Oster Voldgade 10 , Copenhagen , 1350 K , Denmark
Point of contact
  Geological Survey of Denmark and Greenland (GEUS) - Sara Salehi
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
  • Aster
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
50000
Distance
15  m
Metadata language
English
Topic category
  • Geoscientific information
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Reference system identifier
EPSG / https://epsg.io/32624
Geometric object type
Complex
Distribution format
  • Web Service ( 1.0 )

Point of contact
  Geological Survey of Denmark and Greenland (GEUS) - Christian Brogaard Pedersen
Oster Voldgade 10 , Copenhagen , 1350 K , Denmark
OnLine resource
Data source ( WWW:DOWNLOAD-1.0-http--download )

USGS Earth Explorer download page

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

Greenland Portal

Hierarchy level
Dataset

Conformance result

Date (Publication)
2010-12-08
Explanation
This field has no significance
Pass
No
Statement
The ASTER Level 1 Precision Terrain Corrected Registered At-Sensor Radiance (AST_L1T) data are obtained from the USGS webpage https://earthexplorer.usgs.gov/ in the time period of 2000-2007. Scenes were also limited to summer and captured in daytime.
File identifier
53661d2a-6cd7-4f72-82d7-a01db028bf04 XML
Metadata language
English
Hierarchy level
Dataset
Date stamp
2023-04-13T11:47:22
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
 
 

Overviews

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Spatial extent

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Keywords


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