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

Category: 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 the Earth’s Magnetic Field and how it changes due to different types of rock. This data shows the magnetic gradient (changes in the magnetic field). The magnetic gradient allows us to map different types of rock close to the surface. 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 magnetic gradient of the rocks: black for low, grey for medium and white 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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Data Resource Preview - ESRI REST

Theme Science
Date released 2013-12-31
Date updated 2021-10-19
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.\nhttps://creativecommons.org/licenses/by/4.0/\nhttps://creativecommons.org/licenses/by/4.0/legalcode\n\nData 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.\n\nhttp://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/\n\nUnder the CC-BY Licence, users must acknowledge the source of the Information in their product or application.\nPlease 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.”\n\nUnder 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.”\n\nIn 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 {"verticalDomainName": "sea level", "minVerticalExtent": "-2186.14", "maxVerticalExtent": "1523.42"}
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