41e42283-c6da-448e-99b5-e77cec12c2c1 English British Geological Survey +44 115 936 3100 Environmental Science Centre,Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk 2025-05-20T15:00:49.370801Z UK GEMINI 2.3 http://data.bgs.ac.uk/id/dataHolding/13608413 OSGB 1936 / British National Grid (EPSG::27700) Heat flow United Kingdom version 1 2024-02 http://data.bgs.ac.uk/id/dataHolding/13608413 The dataset portrays heat flow as a continuous modelled surface, interpolated between observation points. Onshore coverage is provided for England, Wales, Scotland and Northern Ireland. The British Geological Survey (BGS) Heat flow dataset version 1 (United Kingdom) is derived from a catalogue of legacy heat flow observations and ground-heat modelling. Heat flow data is typically used to determine temperatures beneath the ground surface, and model how much thermal energy may be stored in or recovered from the ground. The dataset is presented as a raster model, but is also available as cellular, vector grids. The raster and square-cellular grid defines each cell by an area of c. 4km2 (2km per side). The hexagonal-cellular defines each cell by an area of c. 2.56km2 (1km per side). Heat flow values are milli-Watts per square metre (mWm-2). The data are available under BGS data licence. Enquiries British Geological Survey 0115 936 3143 0115 936 3276 Environmental Science Centre, Nicker Hill, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk Enquiries British Geological Survey 0115 936 3143 0115 936 3276 Environmental Science Centre, Nicker Hill, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk https://resources.bgs.ac.uk/images/geonetworkThumbs/41e42283-c6da-448e-99b5-e77cec12c2c1.png Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 UK Location (INSPIRE) Scottish SDI BGS Data Products Geothermal heat flow Citable Data BGS Thesaurus of Geosciences 2022 UK Location (INSPIRE) Scottish SDI Citable Data BGS Data Products NERC_DDC Access constraints: no limitations. Use constraints: this dataset is available for use under licence from BGS. Contact digitaldata@bgs.ac.uk for more information. To encourage the use and re-use of this data we have made it available under the Open Government Licence www.nationalarchives.gov.uk/doc/open-government-licence/version/3/, via a web map service and subject to the following acknowledgement accompanying the reproduced BGS materials: "Contains British Geological Survey materials © UKRI [year]". English geoscientificInformation ISO 3166_1 alpha-3 2009 GB British Geological Survey Gazetteer: Geographical hierarchy from Geosaurus 1979 UK [id=139300] ISO 3166_2 2009 UKM -8.20 1.90 49.90 61.00 2025 ESRI Shapefile (.shp) GeoTIFF image (.tif, .tiff) Enquiries British Geological Survey 0115 936 3142 0115 936 3276 The Lyell Centre, Research Avenue South EDINBURGH LOTHIAN EH14 4AP United Kingdom enquiries@bgs.ac.uk Enquiries British Geological Survey 0115 936 3143 0115 936 3276 Environmental Science Centre, Nicker Hill, Keyworth NOTTINGHAM NOTTINGHAMSHIRE NG12 5GG United Kingdom enquiries@bgs.ac.uk https://www.bgs.ac.uk/datasets BGS Datasets Homepage https://doi.org/10.5285/800d6734-2dd5-4ed0-a698-972594800042 Digital Object Identifier (DOI) dataset INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology 2011 See the referenced specification false Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF false The heat flow version 1 is an interpolated model from 212 heat flow measurements (augmented by 504 heat flow estimates) previously published by BGS. Estimations of temperatures with depth were made from the heat flow values contained the BGS Geothermal catalogue (version 1). The heat flow data set was created in ESRI’s Arcview GIS, using the spatial analyst extension to interpolate the input data (via an Inverse Distance-Weighted model). The raster grid is based on a 2km x/y dimension (originally using a British National Grid projection). The raster grid was converted to a vector cellular grids using ESRI’s ArcPro3.2 GIS. The square vector cell mimics the 2km x/y/ dimensions of the original raster (and retains the British National Grid projection). The hexagonal vector cell has side length of 1km (and retains the British National Grid projection). All versions of the data are provided with a WGS84 projection (which will affect the reported area of the cells).