Academic Journal
A geothermal aquifer in the dilation zones on the southern margin of the Dublin Basin
| العنوان: | A geothermal aquifer in the dilation zones on the southern margin of the Dublin Basin |
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| المؤلفون: | Vozar, Jan, Jones, Alan G, Campanya, Joan, Yeomans, Chris, Muller, Mark R, Pasquali, Riccardo |
| المساهمون: | Science Foundation Ireland, SASPRO, Marie Curie Actions 7FP, Slovak Academy of Sciences |
| المصدر: | Geophysical Journal International ; volume 220, issue 3, page 1717-1734 ; ISSN 0956-540X 1365-246X |
| بيانات النشر: | Oxford University Press (OUP) |
| سنة النشر: | 2019 |
| الوصف: | SUMMARY We present modelling of the geophysical data from the Newcastle area, west of Dublin, Ireland within the framework of the IRETHERM project. IRETHERM's overarching objective was to facilitate a more thorough strategic understanding of Ireland's geothermal energy potential through integrated modelling of new and existing geophysical, geochemical and geological data. The Newcastle area, one of the target localities, is situated at the southern margin of the Dublin Basin, close to the largest conurbation on the island of Ireland in the City of Dublin and surrounds. As part of IRETHERM, magnetotelluric (MT) soundings were carried out in the highly urbanized Dublin suburb in 2011 and 2012, and a description of MT data acquisition, processing methods, multidimensional geoelectrical models and porosity modelling with other geophysical data are presented. The MT time-series were heavily noise-contaminated and distorted due to electromagnetic noise from nearby industry and Dublin City tram/railway systems. Time-series processing was performed using several modern robust codes to obtain reasonably reliable and interpretable MT impedance and geomagnetic transfer function ‘tipper’ estimates at most of the survey locations. The most ‘quiet’ 3-hr subsets of data during the night time, when the DC ‘LUAS’ tram system was not operating, were used in multisite and multivariate processing. The final 2-D models underwent examination using a stability technique, and the final two 2-D profiles, with reliability estimations expressed through conductance and resistivity, were derived. In the final stage of this study, 3-D modelling of all MT data in the Newcastle area was also undertaken. Comparison of the MT models and their interpretation with existing seismic profiles in the area reveals that the Blackrock–Newcastle Fault (BNF) zone is visible in the models as a conductive feature down to depths of 4 km. The investigated area below Newcastle can be divided into two domains of different depths, formed as depth zones. The first ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1093/gji/ggz530 |
| DOI: | 10.1093/gji/ggz530/31140934/ggz530.pdf |
| الاتاحة: | https://doi.org/10.1093/gji/ggz530 http://academic.oup.com/gji/advance-article-pdf/doi/10.1093/gji/ggz530/31140934/ggz530.pdf http://academic.oup.com/gji/article-pdf/220/3/1717/31590114/ggz530.pdf |
| Rights: | https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
| رقم الانضمام: | edsbas.205CD90F |
| قاعدة البيانات: | BASE |
| DOI: | 10.1093/gji/ggz530 |
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