Map based index (GeoIndex) landsat imagery

Published by:
Scottish Government SpatialData.gov.scot
Last updated:
23 July 2020
Topic:
Not added
Licence:
Other Licence
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Summary

This layer of the map based index (GeoIndex) shows satellite data at different resolutions depending on the current map scale. At small scales, it is shown in generalised form with each pixel covering 300 metres, and at larger scales it is shown at its actual resolution of 30 metres. The satellite imagery in GeoIndex was acquired by the Landsat Thematic Mapper sensor between 1984 and 1990. The imagery has been processed by the BGS Remote Sensing Section to increase contrast and thus enhance natural boundaries. Winter imagery was chosen due to the low sun angle, which enables geomorphic features on the landscape to be distinguished and interpreted. The colours in the image are not what one would normally expect to see because we have used infrared wavelengths to help us extract more geological information than would be possible if we had used visible bands. To create a single image of the whole country, many smaller images covering different rectangular areas and taken at different dates have been patched together. This will in some cases produce marked changes where the smaller images meet and is due to the different conditions when the images were taken.

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Data links

Link to the data Format File added Data preview
Landsat map theme N/A 23 July 2020 Not available
Landsat map theme N/A 23 July 2020 Not available
TM landsat imagery N/A 23 July 2020 Not available

Additional information

View additional metadata
Added to data.gov.uk
2020-07-08T09:40:56
Access contraints
otherRestrictions
Harvest GUID
9df8df53-2a95-37a8-e044-0003ba9b0d98
Extent
Latitude: 60.8400° to 49.7700°
Longitude: -8.6500° to 2.0000°
Spatial reference system
urn:ogc:def:crs:EPSG::27700
Dataset reference date
2000 (creation)
Frequency of update
asNeeded
Responsible party
British Geological Survey (pointOfContact, distributor)
ISO 19139 resource type
dataset
Metadata language
eng
Source Metadata
XML
HTML

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