Airborne Geophysics Radiometric Data Ireland (ROI/NI) ITM TIFF

Published by: Geological Survey Ireland

Licensed under: Creative Commons Attribution 4.0

Theme: Science

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The survey data combines data from a number of different surveys into one merged dataset. The individual surveys consist of; (1) Tellus Northern Ireland, 2005-2006 (2) Cavan-Monaghan, 2006 (3) Tellus Border, 2011-2012 (4) Tellus North Midlands, 2014-2015 (5) Block A1, 2015 (6) Block A2, 2016 (7) Waterford, 2016 (8) Block A3, 2017 (9) Block A4, 2017 (10) Block A5, 2018-2019 (11) Block A6, 2018-2019 (12) Block A7, 2019 Combined a total of 382,567 km of data were collected over a total area of approximately 70,438 km2. The plane flew along survey lines 200m apart at a height of about 60m.

The system measures gamma-rays released by elements in the ground. An instrument on-board the plane counts the number of rays to find out how much natural radioactivity is present in the ground. This data shows the total radioactivity contained in the ground which can then be mapped.

This is a raster dataset. Raster data stores information in a cell-based manner and consists of a matrix of cells (or pixels) organized into rows and columns. The format of the raster is an image (TIFF). The image cell size is 50m which means that each cell (pixel) represents an area on the ground that is 50 meters across. The image also contains location information (GEOTIFF). Each cell has a different colour representing the amount of radioactivity in the soil or rock: blue for low, green for medium and red for high. The Tellus survey is a national airborne geophysical and ground geochemical mapping project managed by the Geological Survey Ireland.

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Theme	Science
Date released	2013-12-31
Date updated	2021-10-18
Dataset conforms to these standards	The INSPIRE Directive or INSPIRE lays down a general framework for a Spatial Data Infrastructure (SDI) for the purposes of European Community environmental policies and policies or activities which may have an impact on the environment.
Rights notes	{"Creative Commons Attribution 4.0 International (CC BY 4.0)","Data that is produced directly by the Geological Survey Ireland (GSI) is free for use under the conditions of Creative Commons Attribution 4.0 International license. https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/legalcode Data that is produced directly by the Geological Survey of Northern Ireland (GSNI) is free for use under the conditions of the UK Open Government Licence v3.0. http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Under the CC-BY Licence, users must acknowledge the source of the Information in their product or application. Please use this specific attribution statement: \"Contains Irish Public Sector Data (Geological Survey Ireland) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence.” Under the UK Open Government Licence users must acknowledge the source of the Information in their product or application. Please use this specific attribution statement: “Contains UK public sector information (Geological Survey of Northern Ireland) licensed under the UK Open Government Licence v3.0.” In cases where it is not practical to use the statement users may include a URI or hyperlink to a resource that contains the required attribution statement.",license,"Data that is produced directly by the Geological Survey Ireland (GSI) is free for use under the conditions of Creative Commons Attribution 4.0 International license. https://creativecommons.org/licenses/by/4.0/ https://creativecommons.org/licenses/by/4.0/legalcode Data that is produced directly by the Geological Survey of Northern Ireland (GSNI) is free for use under the conditions of the UK Open Government Licence v3.0. http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Under the CC-BY Licence, users must acknowledge the source of the Information in their product or application. Please use this specific attribution statement: \"Contains Irish Public Sector Data (Geological Survey Ireland) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence.” Under the UK Open Government Licence users must acknowledge the source of the Information in their product or application. Please use this specific attribution statement: “Contains UK public sector information (Geological Survey of Northern Ireland) licensed under the UK Open Government Licence v3.0.” In cases where it is not practical to use the statement users may include a URI or hyperlink to a resource that contains the required attribution statement.",license}
Update frequency	Other
Language	English
Landing page	https://secure.dccae.gov.ie/arcgis3/rest/services/TELLUS
Geographic coverage in GeoJSON format	{"type":"Polygon","coordinates":[[[-10.47472, 51.44555],[-10.47472, 55.37999], [-6.01306, 55.37999], [-6.01306, 51.44555], [-10.47472, 51.44555]]]}
Spatial Reference Systems (SRS)	Irish Transverse Mercator (ITM, EPSG:2157)
Vertical Extent	{"maxVerticalExtent": "1523.42", "verticalDomainName": "sea level", "minVerticalExtent": "-2186.14"}
Provenance information	Data quality control reports available in the publications section of the Geological Survey Ireland Website
Period of time covered (begin)	2005-01-01
Period of time covered (end)	2019-01-31