Monitoring the Soil and Electromagnetic (EM) Radiation<br />Dan Boddice and Laura Pring<br />
Monitoring the Soil and EM RadiationOverview<br />Structure of this Presentation<br />What are we hoping to do?<br />Desk ...
Monitoring the Soil and EM RadiationOverview<br />What are we hoping to do?<br /><ul><li>DART is focused on improving the ...
Many of these use EM radiation
Ground penetrating radar (GPR)
Airborne multi and hyper-spectral sensors
Low frequency EM slingrams (e.g. EM38)
Other techniques use magnetic or electrical properties
Electrical resistance surveying
Magnetometry</li></li></ul><li>Monitoring the Soil and EM RadiationOverview<br />What are we hoping to do?<br />To investi...
Desk Study<br />A desk study characterises the historical and geological setting of the site. <br /><ul><li>Historical map...
Geological mapping from the University of Cranfield Website
Geological/geophysical/geochemical information from the British Geological Survey (BGS)
Previous site investigation reports from the BGS
Anecdotal Information from Royal Agricultural College (RAC)/landowner
Other Sources</li></ul>Monitoring the Soil and EM RadiationOverview<br />
Monitoring the Soil and EM RadiationCirencester – Possible Monitoring Locations<br />Reproduced from BGS Website. Geologic...
Reproduced from BGS Website. Geologic Materials Copyright NERC, OS Map reproduced under licence by BGS.<br />Monitoring th...
Reproduced from BGS Website. Geologic Materials Copyright NERC, OS Map reproduced under licence by BGS.<br />Monitoring th...
Monitoring the Soil and EM RadiationHarnhill – Geophysical Surveys<br />Gravity Survey Points<br />Airborne Magnetic Surve...
On Site<br />Geological mapping of the monitoring sites and the wider area<br />Geological logging of all open trenches<br...
Monitoring the Soil and EM RadiationOverview<br />Ongoing Monitoring<br />TDR<br />Local weather<br />GPR<br />Standing wa...
Monitoring the Soil and EM RadiationHow Does TDR work?<br />
Monitoring the Soil and EM RadiationExample Data – Dielectric Permittivity<br />
Monitoring the Soil and EM RadiationExample Data – Conductivity (Dielectric Losses)<br />
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Soil and EM monitoring presentation 110110

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A presentation from Dan Boddice and Laura Pring presented to the DART consortium on the 110111

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Soil and EM monitoring presentation 110110

  1. 1. Monitoring the Soil and Electromagnetic (EM) Radiation<br />Dan Boddice and Laura Pring<br />
  2. 2. Monitoring the Soil and EM RadiationOverview<br />Structure of this Presentation<br />What are we hoping to do?<br />Desk study<br />Initial site investigation<br />On going monitoring of the site<br />Laboratory work<br />Output data<br />
  3. 3. Monitoring the Soil and EM RadiationOverview<br />What are we hoping to do?<br /><ul><li>DART is focused on improving the detection of archaeological sites through both aerial remote sensing and geophysical techniques
  4. 4. Many of these use EM radiation
  5. 5. Ground penetrating radar (GPR)
  6. 6. Airborne multi and hyper-spectral sensors
  7. 7. Low frequency EM slingrams (e.g. EM38)
  8. 8. Other techniques use magnetic or electrical properties
  9. 9. Electrical resistance surveying
  10. 10. Magnetometry</li></li></ul><li>Monitoring the Soil and EM RadiationOverview<br />What are we hoping to do?<br />To investigate the behaviour of EM radiation in different soil conditions<br />Find ways to use the geotechnical properties of the soil to predict sensor response<br />To help provide data and information to assist with the other parts of the project<br />
  11. 11. Desk Study<br />A desk study characterises the historical and geological setting of the site. <br /><ul><li>Historical mapping from Edina Digimap
  12. 12. Geological mapping from the University of Cranfield Website
  13. 13. Geological/geophysical/geochemical information from the British Geological Survey (BGS)
  14. 14. Previous site investigation reports from the BGS
  15. 15. Anecdotal Information from Royal Agricultural College (RAC)/landowner
  16. 16. Other Sources</li></ul>Monitoring the Soil and EM RadiationOverview<br />
  17. 17. Monitoring the Soil and EM RadiationCirencester – Possible Monitoring Locations<br />Reproduced from BGS Website. Geologic Materials Copyright NERC, OS Map reproduced under licence by BGS.<br />
  18. 18. Reproduced from BGS Website. Geologic Materials Copyright NERC, OS Map reproduced under licence by BGS.<br />Monitoring the Soil and EM RadiationHarnhill – Borehole Locations<br />
  19. 19. Reproduced from BGS Website. Geologic Materials Copyright NERC, OS Map reproduced under licence by BGS.<br />Monitoring the Soil and EM RadiationHarnhill – Possible Well Sites<br />
  20. 20. Monitoring the Soil and EM RadiationHarnhill – Geophysical Surveys<br />Gravity Survey Points<br />Airborne Magnetic Survey Flight Lines<br />Reproduced from BGS Website. Geologic Materials Copyright NERC, OS Map reproduced under licence by BGS.<br />
  21. 21. On Site<br />Geological mapping of the monitoring sites and the wider area<br />Geological logging of all open trenches<br />Removal of undisturbed and bulk disturbed samples for laboratory testing<br />In situ shear vane testing (if applicable)<br />Logging of hand augered boreholes<br />Possible standard penetration testing (SPT) and installation of water monitoring boreholes<br />Installation of time domain reflectometer (TDR)<br />Installation of weather station<br />Monitoring the Soil and EM RadiationOverview<br />
  22. 22. Monitoring the Soil and EM RadiationOverview<br />Ongoing Monitoring<br />TDR<br />Local weather<br />GPR<br />Standing water (boreholes)<br />
  23. 23. Monitoring the Soil and EM RadiationHow Does TDR work?<br />
  24. 24. Monitoring the Soil and EM RadiationExample Data – Dielectric Permittivity<br />
  25. 25. Monitoring the Soil and EM RadiationExample Data – Conductivity (Dielectric Losses)<br />
  26. 26. Monitoring the Soil and EM RadiationTDR System Design<br />
  27. 27. Monitoring the Soil and EM Radiation Changes to Giulio’s Design<br />
  28. 28. Monitoring the Soil and EM Radiation TDR Installation<br />
  29. 29. Monitoring the Soil and EM Radiation TDR Installation – Clay “Difficult” Soils<br />
  30. 30. Monitoring the Soil and EM Radiation TDR Installation – “Simple” Soils<br />
  31. 31. Monitoring the Soil and EM Radiation Factors which affect EM Propagation<br />Soil Temperature<br />Soil Moisture<br />Geotechnical Properties<br />Density<br />Particle Size Distribution (PSD)<br />Atterberg Limits<br />Geochemistry<br />Frequency of EM<br />Magnetic components in the soil<br />
  32. 32. Monitoring the Soil and EM RadiationWeather Variability over 400m<br />
  33. 33. Monitoring the Soil and EM RadiationWeather Variability over 400m<br />
  34. 34. Laboratory Work<br />Particle Size Distribution<br />Natural Moisture Content<br />Atterberg Limits (where applicable)<br />Density (only possible for undisturbed samples)<br />Various geochemical tests<br />Testing of created soil types using a TDR probe<br />Monitoring the Soil and EM RadiationOverview<br />
  35. 35. Monitoring the Soil and EM RadiationOutput Data<br />Bulk Dielectric <br />Bulk pseudo-conductivity (electrical and magnetic losses)<br />Temperature and Moisture Profile of the soil and air above<br />GPR survey data at different frequencies and conditions<br />Geotechnical properties of the soils on site<br />Local weather<br />Signal propagation in varying soil conditions in the laboratory<br />
  36. 36. Monitoring the Soil and EM Radiation Acknowledgments<br />GiulioCurioni and Andrew Foo (Mapping the Underworld)<br />Simon Price, Russell Lawley and Helen Reeves (BGS)<br />Nicole Metje and David Chapman (Birmingham University)<br />

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