| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Chapman, David
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2024Self-swabbing versus assisted swabbing for viral detection by qRT-PCR: the experience from SARS-CoV-2 based on a meta-analysis of six prospectively designed evaluations conducted in a UK settingcitations
- 2021Ultra-high speed X-ray imaging of dynamic fracturing in cementitious materials under impact ; Imagerie aux rayons X ultra-rapide de la fracturation dynamique dans des matériaux cimentaires sous impactcitations
- 2020Experimental investigation into the effects of cast-iron pipe corrosion on GPR detection performance in clay soilscitations
- 2017Unique Insight into the Seasonal Variability of Geophysical Properties of Field Soils: Practical Implications for Near Surface Investigationscitations
- 2017Seasonal variations measured by TDR and GPR on an anthropogenic sandy soil and the implications for utility detectioncitations
- 2014Factors affecting soil permittivity and proposals to obtain gravimetric water content from time domain reflectometry measurementscitations
- 2013Impact of millimeter-size silicon microchips on the mechanical properties of polymer samples tested under flexural bending, long-term creep,and impact conditionscitations
- 2012Construction and calibration of a field TDR monitoring stationcitations
- 2011Pipeline Engineering in the Ground: the impact of Ground Conditions on Pipeline Condition and Maintenance Operationscitations
- 2010Electromagnetic Properties of the Ground: Part II - The Properties of Two Selected fine-Grained Soilscitations
- 2010Electromagnetic Properties of the Ground: Part 1 - Fine-Grained Soils at the Liquid Limitcitations
- 2008Broadband apparent permittivity measurement in dispersive soils using quarter-wavelength analysiscitations
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article
Unique Insight into the Seasonal Variability of Geophysical Properties of Field Soils: Practical Implications for Near Surface Investigations
Abstract
Electromagnetic (EM) wave propagation methods are extensively used in geophysical prospection, such as archaeological and utility surveys. The signal penetration and attenuation depend strongly on the apparent permittivity and electrical conductivity of the soil which vary on a seasonal basis, affecting the detection of buried features, especially their detected depth. However, there is a significant lack of high quality, long term seasonal field monitoring data of EM properties in different soil conditions to aid the understanding of how these properties vary in field conditions. The research reported in this paper provides an important step forward in addressing the scarcity of data. Long term data are presented and analysed from bespoke time domain reflectometry (TDR) monitoring stations designed to enable collection of apparent relative dielectric permittivity (ARDP), bulk electrical conductivity (BEC) and temperature data at a high temporal resolution (hourly) from three remote sites with different soils over an extended period (16-23 months).As well as providing an extensive data set on this subject, the data highlighted the importance of using accurate EM soil data for geophysical prospection The greatest changes in geophysical properties for all sites were found in the near surface soils (< 0.5 m), where many buried utilities are found, with rapid wetting events and slower drying events greatly affecting both the ARDP and BEC.However, the most critical factor for determining these properties was the soil water holding capacity which in turn was a function of the clay mineralogy and content.Analysis of the ratio of energy loss to storage showed that the optimum time for GPR surveying was found to be during dry periods and when the soil temperature was low, displaying the significance of soil temperature on survey outcomes due to its significant effect on BEC.The results from this paper will aid survey planning thereby ensuring better detection rates.