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- University of Keele
- 14 - Geography and Environmental Studies
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- University of Keele
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- 14 - Geography and Environmental Studies
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- Legal
- Is this case study continued from a case study submitted in 2014?
- No
1. Summary of the impact
The development and application of forensic geoscience techniques by researchers at Keele University have directly informed ‘active’ and ‘cold case’ missing persons police investigations in the UK and beyond. Such work has improved police search training in terms of its efficiency and effectiveness, reducing the time to conduct searches from several weeks to a number of days. The research has also helped to locate victims killed in natural disasters and genocides in other parts of the world, as well as shaping archaeological excavations and in the detection of illegal waste sites and wildlife crime, including deliberate badger sett tampering.
2. Underpinning research
Identifying burial sites
The Keele Applied and Environmental Geophysics (KAEG) research group, led by Dr Pringle who is an Expert Search Advisor for the Major Crime Investigative Support of the National Crime Agency (NCA), worked with Dr Cassella (Staffordshire University) to establish a test site on Keele University campus in 2007. This involved the creation of simulated clandestine graves of murder victims containing pig carcasses located in different burial styles. Experimental studies were conducted to test the effectiveness of different geophysical techniques over time when searching for such burials ( 3.1), and to determine time since death ( 3.2). One study provided hitherto unrecognised insights into the importance of soil water conductivity in generating reliable burial date estimates and thereby important intelligence for police use in murder investigations ( 3.2). Research also highlighted how electrical resistivity geophysical surveys, a method for characterising near ground surface soil, rocks and other material in terms of their electrical properties, could be utilised in new ways to detect shallowly buried remains within the first four years of burial. It was also identified that the application of Ground Penetrating Radar (GPR) geophysical surveys could be used to detect burials up to 10 years ( 3.1). Important variables affecting results were also recognised for the first-time including weather, body wrapping/clothing, length of time being buried, and season of surveying ( 3.1).
Revising police search strategies for active and unsolved cases
KAEG’s research has provided police with new search strategies and utilising geophysical methods not commonly used in searches for missing persons. KAEG has produced innovative search strategies for locating objects beneath the ground and hidden in walls. The strategy consists of an intelligence gathering stage, including the use of maps, aerial photographs, interviews and walk-overs of surrounding areas before analysis using a range of geoscience / forensic methods, such as geophysics, LiDAR scanning, and search dogs ( 3.3, 3.4). These strategies were deployed to recover a murder victim buried under a concrete basement in Toronto, Canada ( 3.3) and to search for suspected murder victims in the UK ( 3.5). Electrical resistivity surveys have been innovatively applied by KAEG to a range of criminal investigations including missing persons ( 3.5) and environmental crime investigations ( 3.3). They are cited as being more effective when searching very large areas or sites with high clay content soils to pinpoint suspected locations for further investigation ( 3.5), taking days instead of several weeks, thereby saving police time.
Protecting the environment and forensic archaeology
KAEG’s multi-technique geophysical search strategies have also supported the Northern Ireland Environment Agency (in conjunction with colleagues at Queen’s University Belfast) to detect and characterise two illegal waste dumps ( 3.4), as well as to investigate deliberate badger sett tampering ( 5.9). Such techniques have also helped to facilitate archaeological investigations in confined urban spaces over short periods of time ( 3.6). During excavations in London in 2013 ( 3.6), 200 bodies dating from AD 1275–1485 were discovered, buried in individual graves, challenging contemporary historical accounts of victims buried in mass pits during the Black Death plague period ( 3.6).
3. References to the research
Research underpinning this impact case study has been published as research articles in international peer-reviewed journals, including Scientific Reports, and, predominantly, in the Journal of Forensic Sciences and Forensic Science International, the leading global Forensic Science journals that are recognised internationally for their originality, significance and rigour.
Simulated graves research
3.1. Pringle JK, Stimpson IG, Wisniewski KD, Heaton V, Davenward B, Mirosch N, Spencer F & Jervis JR. 2020. Geophysical monitoring of simulated homicide burials for forensic investigations. Scientific Reports, 10, 1-12. http://dx.doi.org/10.1038/s41598-020-64262-3
3.2. Pringle JK, Cassella JP, Jervis JR, Williams A, Cross P & Cassidy NJ. 2015. Soilwater conductivity analysis to date & locate clandestine graves of homicide victims. Journal of Forensic Sciences, 60, pp. 1052-1060. http://dx.doi.org/10.1111/1556-4029.12802
‘Active’ and ‘cold case’ geoforensic studies
3.3. Ruffell A, Pringle JK & Forbes S. 2014. Search protocols for hidden forensic objects beneath floors and within walls. Forensic Science International, 237, pp.137-145. http://dx.doi.org/10.1016/j.forsciint.2013.12.036
3.4. Ruffell A, Pringle JK, Graham C, Langton M, & Jones GM. 2018. Geophysical assessment of illegally buried toxic waste for a legal enquiry: A case study in Northern Ireland (UK). Environmental Forensics, 19, pp. 239-252. https://doi.org/10.1080/15275922.2018.1519740
3.5. Pringle JK & Jervis JR. 2010. Electrical resistivity survey to search for a recent clandestine burial of a homicide victim, UK. Forensic Science International, 202, pp. e1-e7. http://dx.doi.org/10.1016/j.forsciint.2010.04.023
3.6. Dick HC, Pringle JK, Sloane B, Carver J, Haffenden A, Porter S, Wisniewski KD, Roberts D, & Cassidy NJ. 2015. Detecting and characterising of Black Death burials by multi-proxy geophysical methods. Journal of Archaeological Science, 59, pp. 132-141. http://dx.doi.org/10.1016/j.jas.2015.04.010
4. Details of the impact
Supporting searches for UK missing persons
In 2016-17, England and Wales police forces recorded 102,404 missing people, a proportion of whom will have been murdered (NCA, 2019 report). In this context, Pringle and Heaton are part of the Search Technologies Research Team (START), a police and academic collaboration that improves police search effectiveness ( 5.1). Pringle has provided expert support to the last three National Search Advisers at the NCA, each seconded from Regional Police for five years, searching for 350 UK missing persons ( 5.2). KAEG has raised police awareness and knowledge through publications in the Police Professional practitioner magazine, and workshop training with UK Police crime scene investigation managers and officers in 2014, 2016 and 2018 ( 5.2). Research findings ( 3.1, 3.4) have informed police search training at the National College of Policing ( 5.2). Evidenced-based research and details concerning geoforensic challenges were also presented at the 2018 House of Lords Forensic Science enquiry ( 5.3).
Pringle’s expertise has informed decisions about the appropriateness of geophysical techniques/equipment for searches, and accurate interpretation of forensic search datasets collected, essential for key decision making and operational success ( 5.2). Since October 2014, KAEG has directly contributed to 16 UK missing persons cases undertaken by the NCA and Police Forces, providing operational advice and conducting geophysical surveys ( 5.4). This has saved UK Forces £141,291.31 of police time ( 5.4). Many cases, with intelligence or witnesses’ reports of bodies buried, were closed with either human remains found, or the absence of human remains confirmed. One involved searching for a missing person in North Wales, where a geophysical survey was undertaken within a rural area and a body discovered and identified ( 3.5).
Supporting searches for international missing persons
Internationally, KAEG has given expert advice on 12 cases, conducting geophysics searches for missing persons in Brazil, Canada, Colombia, Pakistan, Romania, USA, UAE and Vietnam ( 5.4). Search strategies ( 3.5) have located victims killed in natural disasters, genocides and murders ( 5.4). For example, in April 2014, the Cienfuegos family contacted an international geoforensics research team, involving Pringle, requesting help to locate their grandfather’s grave, shot and buried in the Lena mountains, northern Spain, during the civil war. The team conducted GPR surveys of two witness-identified sites, discovering 26 victims buried in a mass grave. Closure was provided for affected communities, including the Cienfuegos family, whose grandfather’s remains were found ( 5.5). The team has also advised Columbian authorities in searching for 240 people killed by a landslide in Mocoa, Colombia, in 2017, and assisted the International Commission on Missing Persons (Colombia Programme) to locate 51,000 missing persons ( 5.4).
Supporting searches for archaeological targets
KAEG expertise has been innovatively applied during Crossrail excavations, discovering a 15th Century Black Death plague cemetery ( 3.6). This work, filmed for a Channel 4 documentary entitled ‘Return of the Black death: Secret History’ ( 5.6), used multi-technique geophysical detection, characterising the site and evidencing individual burials, challenging medieval testimonies of mass grave burials for plague victims ( 3.6). This was reported in the national and international press, reaching an audience of over 7.5 million, including BBC, Daily Mail, the Sun, the Times, Der Spiegel, and specialist magazines ( 5.7). KAEG also investigated World War II archaeological sites, including allied and axis prisoner of war camp tunnel escapes, and British Resistance Auxiliary Unit bunkers; these were also reported by the BBC and Telegraph ( 5.7).
Supporting legal enforcement to protect the environment
KAEG has supported policing of environmental crimes by conducting geophysics investigations to garner prosecution evidence ( 5.8). Search strategies have been applied in legal cases where waste was illegally buried, and badger setts tampered with.
A Northern Ireland Environment Agency (NIEA) environmental statistics report stated that between 2016-2018, 306 illegal waste sites required remediation, costing taxpayers £500,000. In this context, KAEG located two coastal buried waste dumps in Newtownards in 2016. Geoforensic evidence assisted the successful prosecution and determined sentence severity ( 3.4). The guilty defendant had to pay £250,000 clean-up costs, with the fine calculated using waste volumes and submergence under the water, as identified by KAEG. Proof of resultant marine pollution enabled a higher court sentence ( 5.8).
Badger persecution is a UK Wildlife Crime Priority, with 50% of incidents recorded by Scottish Badgers and Badger Trust related to badger sett interference. KAEG has worked with rural and wildlife crime officers (Staffordshire Police) to investigate deliberate badger sett tampering. GPR survey investigations, led by Wisniewski, found five of twelve badger sett tunnel entrances blocked; the resulting scientific report provided important evidence to the Crown Prosecution Service to charge the perpetrator ( 5.9, 5.10).
5. Sources to corroborate the impact
5.1 Testimonial of Nicola West, Home Office, Centre of Applied Science and Technology.
5.2 Testimonial of Inspector Murray Haynes, National Search Advisor within the Major Crime Investigative Support (MCIS) team, of the National Crime Agency.
5.3. Written evidence for 2019 House of Lords Science and Technology Committee Forensic science and the criminal justice system: a blueprint for change. http://data.parliament.uk/writtenevidence/committeeevidence.svc/evidencedocument/science-and-technology-committee-lords/forensic-science/written/88716.pdf
5.4 Summary tables showing KAEG involvement in UK and international missing persons cases.
5.5 Fernandez-Alvarez J-P, Rubio-Melendi D, Martinez-Velasco A, Pringle JK & Aguilera D. 2016. Discovery of a mass grave from the Spanish Civil War using GPR and forensic archaeology. Forensic Science International, 267, e10-e17. http://dx.doi.org/10.1016/j.forsciint.2016.05.040.
5.6 Channel 4, (April 6, 2014, 19:30), ‘Return of the Black death: Secret History’.
https://www.dailymotion.com/video/x4s3xnr.
5.7 Summary tables showing KAEG geoforensic media engagements.
5.8 Northern Ireland Illegal waste dumping judiciary decision: https://judiciaryni.uk/judicial-decisions/2016-nica-95/.
5.9 Wisniewski K, Pringle JK, Allen D & Wilson G. 2019. Wildlife crime: use of geoscience surveys and geophysics to assist badger sett investigations. Forensic Science International, 294, e11-e18. https://doi.org/10.1016/j.forsciint.2018.10.026.
5.10 Wisniewski K, Pringle JK, Allen D & Wilson G. 2019. Hidden evidence. Police Professional, 24 January, p.22-23. https://www.policeprofessional.com/?s=pringle+wisniewski
- Submitting institution
- University of Keele
- Unit of assessment
- 14 - Geography and Environmental Studies
- Summary impact type
- Environmental
- Is this case study continued from a case study submitted in 2014?
- No
1. Summary of the impact
Keele’s research on fracking has guided UK government policy for shale gas extraction over the past decade, informing stakeholders on causes of fracking-related seismicity and identifying high-risk regions and procedures to mitigate risk. Recommendations from Keele’s research led to the ‘traffic light’ system of magnitude limits, enforcing operators to conduct detailed surveys. In August 2019, the UK’s largest fracking-induced earthquake triggered a ‘red light’ and suspension of fracking. The Oil and Gas Authority, based on Keele’s research, concluded it is not currently possible to predict the probability of fracking-associated tremors, placing a moratorium on fracking in England from November 2019.
2. Underpinning research
Keele has a fifty-year history of developing theory, methods and applications used to characterise and monitor geotechnical, geological and geo-environmental problems. The Keele Applied and Environmental Geophysics (KAEG) group, in collaboration with the British Geological Survey (BGS), led research into ‘induced’ seismicity related to hydraulic fracturing (fracking). This led to the award of two EU Horizon 2020 programmes in 2015 (SHEER and EPOS), which underpin the development of a new open-source data platform ( 3.1).
Fracking can recover oil and gas from unconventional shale gas reservoirs with low permeability. The process sparked widespread concern from the British public, with 40% of respondents opposed to fracking in the Department for Business, Energy and Industrial Strategy (BEIS) public attitudes survey (2019, n=4224). 45% of these were concerned by increased earthquake risk. Fracking generates networks of small fractures in impermeable rock, injecting a mix of water, sand and chemicals under high pressure, creating pathways along which hydrocarbons flow. This generates microseismic activity with magnitudes too small to be felt. However, if the injected fluid encounters a pre-stressed pre-existing geological fault, the change in fluid pressure can cause the fault to fail, inducing larger seismic events that can be felt over wider geographical areas, potentially damaging surface infrastructure ( 3.2). Critically, given that not all locations of natural faults are known in advance, it is currently not possible to accurately predict the probability of fracking-associated tremors.
In Spring 2011, a series of low-magnitude earthquakes, the largest of which registered 2.3 Local Magnitude (LM), occurred during fracking testing by Cuadrilla Resources at Preese Hall, Lancashire ( 3.2, 3.3, 3.4). KAEG, with BGS, installed seismometers to monitor induced seismic activity during fracking at the site, recording 50 earthquakes with similar waveforms to the initially detected earthquakes ( 3.3, 3.4). The study concluded that earthquake activity resulted from direct fluid injection into a previously unidentified adjacent fault zone, reactivating it ( 3.3, 3.4). The discovery that fracking can reactivate faults has been applied by UK government agencies to restrict development of fracking areas where known faults exist.
KAEG’s work, with Durham and Newcastle universities, established a national baseline for anthropogenic earthquakes in the UK. The research found that from the mid-1980s to the 2000s detected anthropogenic earthquakes per year declined ( 3.5). Past levels of anthropogenic earthquakes in the UK have been high, with a concentration of coal mining-related earthquakes in Derbyshire, Nottinghamshire and Staffordshire coalfields ( 3.5). Mapping of subsurface faults in these coalfields is currently patchy, with the possibility of unknown faults that could be reactivated if fracking were to take place nearby ( 3.2, 3.5).
KAEG has applied its expertise in geomechanical modelling to understand the level of stress changes caused by fracking and the influences these have upon geological structures, including faults ( 3.6, 3.7), indicating that minor changes of one parameter can markedly reduce/increase the risk of seismic events occurring on a pre-existing critical fault. A key recommendation made is that fracking operators complete detailed mapping of faults to fully understand the local geology prior to fracking, and that operations are monitored against guidelines ( 3.3, 3.6, 3.7).
3. References to the research
3.1 Orlecka-Sikora, B., Lasocki, S., Kocot, J., Szepieniec, T., Grasso, J. R., Garcia-Aristizabal, A., Schaming, M., Urban, P., Jones, G., Stimpson, I., Dineva, S., Sałek, P., Leptokaropoulos, K., Lizurek, G., Olszewska, D., Schmittbuhl, J., Kwiatek, G., Blanke, A., Saccarotti, G., Chodzińska, K., Rudziński, Ł., Dobrzycka, I., Mutke, G., Barański, A., Pierzyna, A., Kozlovskaya, E., Nevalainen, J., Kinscher, J., Sileny, J., Sterzel, M., Cielesta, S. and Fischer, T., 2020. An open data infrastructure for the study of anthropogenic hazards linked to georesource exploitation: Nature Scientific Data, 7, 89.
3.2 Styles, P., 2018. Fracking and Historic Coal Mining: Their relationship and should they coincide? Report, Keele University.
3.3 Green, C.A., Styles, P. and Baptie, B.J., 2012. Preese Hall shale gas fracturing review and recommendations for induced seismic mitigation. Independent report (a review for the Department of Energy & Climate Change).
3.4 Clarke, H., Eisner, L., Styles, P. and Turner, P., 2014. Felt seismicity associated with shale gas hydraulic fracturing: The first documented example in Europe. Geophysical Research Letters, 41(23), pp. 8308-8314. Doi.org/10.1002/2014GL062047.
3.5 Wilson, M.P., Davies, R.J., Foulger, G.R., Julian, B.R., Styles, P., Gluyas, J.G. and Almond, S., 2015. Anthropogenic earthquakes in the UK: A national baseline prior to shale exploitation. Marine and Petroleum Geology, 68, pp. 1-17. Doi.org/10.1016/j.marpetgeo.2015.08.023.
3.6 Westwood, R., Toon, S. and Cassidy, N.J., 2017. A sensitivity analysis of the effect of pumping parameters on hydraulic fracture networks and local stresses during shale gas operations. Fuel, 203, pp. 843-852. Doi.org/10.1016/j.fuel.2017.05.004.
3.7 Westwood, R.F., Toon, S.M., Styles, P. and Cassidy, N.J., 2017. Horizontal respect distance for hydraulic fracturing in the vicinity of existing faults in deep geological reservoirs: a review and modelling study. Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 3(4), pp. 379-391. Doi.org/10.1007/s40948-018-0081-y.
Grants:
EU Horizon 2020: Understanding, preventing and mitigating the potential environmental impacts and risks of Shale Gas Exploration and Exploitation (SHEER) (2015-2018; €291,808).
EU Horizon 2020: European Plate Observing System: long-term plan to facilitate integrated use of data, data products, and facilities from distributed research infrastructures for solid Earth science in Europe (EPOS Implementation) (2015-2019; €162,275).
4. Details of the impact
KAEG has been involved in informing public debate and the government on fracking-induced seismic activity. KAEG‘s fracking research has been reported in numerous media outlets, with an international reach of >12 million, including reports in the US, Germany and Singapore, and extensive UK coverage by the BBC, Sky, LBC, the Guardian, Daily Express and Financial Times ( 5.1). KAEG expert opinion has been sought by several environmental groups, including Greenpeace ( 5.2), and local community action groups such as ‘Frack Free United’ and ‘Residents Action on Fylde Fracking’ ( 5.1). KAEG has worked with policymakers, raising awareness, informing understanding of geologically vulnerable areas, and how fracking-induced earthquakes are triggered. The research ( 3.2-3.7) has been applied to guidelines and policy regulating the UK fracking industry.
Advising the UK government and developing fracking policy
Over the past decade, KAEG has advised the UK government on how fracking-related earthquakes are caused, high-risk areas where fracking should be avoided, and procedures needed to minimise the risk of fracking-induced earthquakes (see 3.2).
Following fracking-related seismic activity at Preese Hall, Lancashire, the UK government reviewed regulations and, in 2012, introduced a traffic light system ( 5.3). Ed Davey, then Energy Secretary, stated, “This was a key decision – based on the best science available – and after extensive consultation. Indeed, I insisted on consulting on the report itself and its recommendations to promote as much transparency as possible.” ( 5.2). The system put in place a series of checks to monitor seismicity, requiring drilling to stop for 18 hours in the event of tremors >0.5ML, a standard recommended to government in a 2012 report co-authored by Prof. Styles ( 5.2, 5.4). Further recommendations have also been implemented, including the requirement of operators to conduct local geological studies, including mapping faults and fully understand local geology, to assess whether fracking could reactivate existing faults ( 5.5 5.6). The Oil and Gas Authority (OGA) also makes an independent assessment of the likelihood of seismic activity based upon recommended geological studies ( 5.6).
On 22nd May 2018, Prof. Styles’ report ( 3.2) was launched in the House of Lords in an event hosted by Baroness Lynne Featherstone, who commented, “This report asks some serious questions of the Government and the fracking industry. Ministers must take heed and listen to the growing weight of evidence on fracking and, at the bare minimum, implement a moratorium on fracking in coal mining areas and review fracking across the UK” ( 5.7). On the same day, an Early Day Motion (EDM) on fracking in former coalfield areas was presented to the House of Commons by John Mann, supported by 19 MPs. The EDM draws upon 3.2, highlighting ‘the risk of earthquakes posed by fracking beneath coal-mined areas where mining-induced seismicity has already occurred’ ( 5.8). It calls on ‘the Secretary of State for Communities and Local Government’ to adopt Prof. Styles' best-practice recommendation that planning applications for any fracking site include all available, high-resolution, carefully mapped datasets and incorporate these in the ‘National Planning Policy Framework’, and further calls on ‘the Government and local authorities to place a moratorium on fracking-related activities in coalfield areas’ ( 5.8). The report was cited in the House of Commons Housing, Communities and Local Government Committee (2nd July 2018), in a report titled ‘Planning guidance on fracking 2017–19’ ( 5.9). In this, the committee recommends that the government assesses fracking guidance and responds to its findings that fracking in former coal mining areas could reactivate old or unknown faults ( 5.9).
In August 2019, fracking began at Preston New Road 2 (PNR2), Lancashire, after agreeing a Hydraulic Fracture Plan with fracking operator Cuadrilla ( 5.3). The plan proposed using mitigation measures recommended in 3.3, including the traffic light system, to undertake geological surveys of the area and monitor seismic activity ( 5.3). Fracking commenced at the site on 15th August; a series of seismic events were recorded including red-light events that resulted in fracking being paused. On 26th August, the UK’s largest fracking-induced earthquake occurred, measuring 2.9ML, which was widely felt across the region with cosmetic damage to some buildings ( 5.3). Based upon the measures proposed in 3.3, OGA suspended operations. In an interim OGA report in November 2019 ( 5.3), based upon the seismic data and traffic light monitoring system at PNR2, it was concluded that it is not possible with current technology to accurately predict the probability of fracking-associated tremors. Based on this, the government put a moratorium on fracking in England ( 5.4, 5.10). Business and Energy Secretary Andrea Leadsom MP said, “In the UK, we have been led by the best available scientific evidence...after reviewing the OGA’s report into recent seismic activity at Preston New Road, it is clear that we cannot rule out future unacceptable impacts on the local community'' ( 5.10).
5. Sources to corroborate the impact
5.1 Spreadsheet of media coverage.
5.2 Greenpeace (7 May 2018) Unearthed online magazine, Do the UK’s fracking miniquakes matter?
5.3 Oil and Gas Authority (2019) Interim report of the scientific analysis of data gathered from Cuadrilla’s operations at Preston New Road.
5.4 Testimonial from Helena Charlton, Deputy Director, Oil and Gas Exploration and Production, at Department Business, Energy and Industrial Strategy.
5.5 Department for the Environment and Climate Change (2014) Fracking UK shale: understanding earthquake risk.
5.6 Department for Business, Energy & Industrial Strategy, 12 March 2019, Guidance on fracking: developing shale gas in the UK.
5.7 Oil change international, 22 May 2018, ‘Fracking “Could Cause Earthquakes On Up To Half Of Land Licensed In UK”’.
5.8 House of Commons Early Day Motions, 22 May 2018, Fracking in the former coalfield area.
5.9 House of Commons Housing, Communities and Local Government Committee Planning guidance on fracking Eighth Report of Session 2017–19.
5.10 Department for Business, Energy & Industrial Strategy, 2 November 2019, Press Release ‘Government ends support for fracking’.