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Geophysical Investigations in UK Graveyards - Re-use of Existing Burial Grounds
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, Near Surface 2011 - 17th EAGE European Meeting of Environmental and Engineering Geophysics, Sep 2011, cp-253-00037
- ISBN: 978-90-73834-15-6
Abstract
This series of linked studies tests the capabilities of ground penetrating radar (GPR) and fixed-offset bulk resistivity surveys in the search for unmarked burials in UK graveyards. 225 MHz GPR antennae was deemed the optimum dominant frequency due to success in delineating the positions of known burials and also the relatively rapid data acquisition rate compared to higher frequencies. Resistivity data were collected using two mobile probe spacings (0.5m and 1m) simultaneously, 1-m probe spaced data was judged to be less affected by near-surface heterogeneities. Comparisons of both resistivity datasets were deemed worthwhile to detect unmarked burials. Soil type has a major influence on the effectiveness of each geophysical technique. It is recommended that both GPR and resistivity surveys be conducted to optimise the detection of unmarked burials.