38655a96-3918-6fab-e063-3050940a2315 English nonGeographicDataset non geographic dataset British Geological Survey +44 131 667 1000 The Lyell Centre, Research Avenue South EDINBURGH LOTHIAN EH14 4AP United Kingdom enquiries@bgs.ac.uk pointOfContact 2026-04-08 UK GEMINI 2.3 http://data.bgs.ac.uk/id/dataHolding/13608431 UKGEOS Cheshire - Electrical Resistivity Tomography (ERT) data (Feb 2025) 2025-06-19 creation http://data.bgs.ac.uk/id/dataHolding/13608431 This data contains raw electrical resistivity tomography (ERT) measurements made at the UKGEOS (United Kingdom Geoenergy Observatories) site at Thornton science park in Cheshire, as well as associated metadata, during February 2025. The measurements in this case were made in support of a 3-day closed loop heat injection test starting on the 10th of February 2025. During the test approx. 24kW of heat was equally distributed between 4 observatory heat exchanger boreholes via a circulating heat exchange fluid. This resulted in the fluid delivery temperature increasing from 12 to 27C. The ERT data was collected from 12 boreholes instrumented with ERT electrodes at 1m intervals from 12 to 96 m below the ground surface to facilitate down and cross- hole imaging with electrical currents (1008 electrodes in total). The electrodes are connected to a geoelectrical monitoring system comprising two PRIME servers (1 and 2) which are installed at the site indefinitely. The PRIME instrument is bespoke developed by the British Geological Survey (BGS) for long term geoelectrical monitoring applications, in this case the purpose of the data is to study how the electrical resistivity of the ground responds to temperature changes and other hydrogeological processes. Metadata includes the position of the electrodes within the subsurface, furthermore, finite element meshes are included to aid the user in processing this data. There is a readme (text) file provided with this data that describes its formatting and usage. This data is managed by BGS. 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 distributor 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 originator 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 pointOfContact Enquiries British Geological Survey United Kingdom not available distributor Enquiries British Geological Survey not available originator notPlanned https://resources.bgs.ac.uk/images/geonetworkThumbs/38655a96-3918-6fab-e063-3050940a2315.png Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication Geothermal energy Resistivity Tomography Borehole imaging Geophysical data Boreholes BGS Thesaurus of Geosciences 2022 revision UKGEOS Citable Data data.gov.uk (non-INSPIRE) dataCentre NERC_DDC otherRestrictions no limitations The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible. otherRestrictions The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused. Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]" English geoscientificInformation 2025-02-07 2025-02-21 0.0000 100.0000 Newlyn notknown Tab-separated values (TSV) Comma-separated values (CSV) Gmsh script file (.geo, .pos) Gmsh ASCII mesh file (.msh) 4.1 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 distributor Enquiries British Geological Survey United Kingdom not available distributor https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item188803 WWW:DOWNLOAD-1.0-http--download Data download https://doi.org/10.5285/ed322978-ced8-40e9-ae61-a4c66a9199ae WWW:LINK-1.0-http--related Citation Information - Digital Object Identifier (DOI) Cimpoiasu, M. O., Boyd, J. P., Wilkinson, P. B., Ngui, J., Spence, M. (2025). UKGEOS Cheshire - Electrical Resistivity Tomography (ERT) data (Feb 2025). NERC EDS National Geoscience Data Centre. (Dataset). https://doi.org/10.5285/ed322978-ced8-40e9-ae61-a4c66a9199ae information nonGeographicDataset non geographic dataset INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology 2011 publication 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 publication See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF false The resistance data are generated via a multichannel electrical resistivity instrument known as PRIME (PRoactive Infrastructure Monitoring and Evaluation system). Measurements provided are raw measurements only (barring any internal filtering by PRIME). The sensors for the PRIME instrument (electrodes) are in boreholes. The coordinates of the electrodes are also provided with reference to a local and national (OSGB36) coordinate system. The elevations of the electrodes are given with reference to OSGB36 datum, hence although all electrodes are below the ground surface some occupy positive elevation values. The accompanying mesh (for data processing) was generated via the Gmsh software using the known electrode positions and known elevation of the ground surface (at ~20m).