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  1. Broadband Dielectric Analysis of Clays: Impact of Cation Exchange Capacity, Water Content, and Porosity

    Article • Journal of Geophysical Research Solid Earth, March 2026, American Geophysical Union (AGU)

    Dr Norman Wagner

  2. Coaxial method to investigate broadband dielectric properties of rocks over the 5 Hz to 3 GHz frequency range

    Article • Journal of Rock Mechanics and Geotechnical Engineering, June 2025, Elsevier

    Dr Norman Wagner

  3. A flow through coaxial cell to investigate high frequency broadband complex permittivity

    Article • Measurement, June 2024, Elsevier

    Dr. Guanxi Yan, Dr Norman Wagner

  4. Experimental determination of frequency- and temperature-dependent electrical properties of water-saturated clays using spectral induced polarization and network analyzer technique

    Article • Measurement, February 2022, Elsevier

    Dr Norman Wagner

  5. Coupled hydraulic, mechanical and dielectric investigations on kaolin

    Article • Engineering Geology, December 2021, Elsevier

    Dr Norman Wagner

  6. Analysis of Interfacial Water in Clay by High Frequency Dielectric Relaxation Spectroscopy

    Article • July 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  7. Broadband Dielectric Spectroscopy with Coaxial Transmission Line Technique - A new inversion approach

    Article • July 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  8. Impact of the cation exchange capacity on dielectric relaxation spectra of water saturated clays

    Article • July 2021, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  9. Multiple open ended probe for spatio-temporal dielectric spectroscopy: application to evaporative dewatering

    Article • Measurement, October 2020, Elsevier

    Dr Norman Wagner

  10. On Reconstructing the Soil Shrinkage Characteristic Curve by Dielectric Spectroscopy

    Article • July 2019, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  11. Spatial Retrieval of Broadband Dielectric Spectra

    Article • Sensors, August 2018, MDPI AG

    Dr Norman Wagner

  12. A New Broadband Dielectric Model for Simultaneous Determination of Water Saturation and Porosity

    Article • IEEE Transactions on Geoscience and Remote Sensing, August 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  13. Electromagnetic Characterization of Coarse-Grained Soils with a One Port Large Coaxial Cell

    Article • June 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  14. Dielectric Spectra Reconstruction of Layered Multi-Phase Soil

    Article • June 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  15. A large coaxial reflection cell for broadband dielectric characterization of coarse-grained materials

    Article • Measurement Science and Technology, December 2017, Institute of Physics Publishing

    Dr Norman Wagner

  16. Ultra-broad-band electrical spectroscopy of soils and sediments—a combined permittivity and conductivity model

    Article • Geophysical Journal International, June 2017, Oxford University Press (OUP)

    Dr Norman Wagner

  17. Soil Collapse Monitoring with EM Measurements

    Article • April 2017, Avestia Publishing

    Dr Norman Wagner

  18. Thermal and dielectric behaviour of fine-grained soils

    Article • Environmental Geotechnics, April 2017, ICE Publishing

    Dr Norman Wagner

  19. Experimental investigation of the dielectric properties of soil under hydraulic loading

    Article • Measurement Science and Technology, February 2017, Institute of Physics Publishing

    Dr Norman Wagner

  20. Electromagnetic techniques in geoenvironmental engineering

    Article • Environmental Geotechnics, February 2017, ICE Publishing

    Dr Norman Wagner

  21. Broadband electromagnetic analysis of compacted kaolin

    Article • Measurement Science and Technology, December 2016, Institute of Physics Publishing

    Dr Norman Wagner

  22. Error Analysis of Clay-Rock Water Content Estimation with Broadband High-Frequency Electromagnetic Sensors—Air Gap Effect

    Article • Sensors, April 2016, MDPI AG

    Dr Norman Wagner

  23. Spectral Decomposition of Soil Electrical and Dielectric Losses and Prediction of In Situ GPR Performance

    Article • IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, January 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  24. A cylindrical guarded capacitor for spectral permittivity measurements of hard rock samples in the MHz-range

    Article • Measurement Science and Technology, August 2015, Institute of Physics Publishing

    Dr Norman Wagner

  25. 3D-FEM modeling of F/TDR sensors for clay-rock water content measurement in combination with broadband dielectric spectroscopy

    Article • April 2015, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  26. Gekoppelte strukturelle Veränderungen in schrumpfenden, verdichteten Tonen und deren dielektrische Eigenschaften

    Article • January 2015, Springer Science + Business Media

    Dr Norman Wagner

  27. Experimental study on the relationship of mechanic and hydraulic state variables, and the dielectric properties of clays

    Article • June 2014, Taylor & Francis

    Dr Norman Wagner

  28. Frequency-dependent attenuation analysis in soils using broadband dielectric spectroscopy and TDR

    Article • June 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  29. Thermohaline energy geo-storage: evaluation of fluid–fluid layers and fluid–rock salt interaction

    Article • Géotechnique Letters, April 2014, ICE Publishing

    Dr Norman Wagner

  30. Estimation of the Soil Water Characteristics from dielectric relaxation spectra

    Article • February 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  31. Non-destructive coaxial transmission line measurements for dielectric soil characterization

    Article • February 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  32. Numerical 3-D FEM and Experimental Analysis of the Open-Ended Coaxial Line Technique for Microwave Dielectric Spectroscopy on Soil

    Article • IEEE Transactions on Geoscience and Remote Sensing, February 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  33. Spatial Time Domain Reflectometry (spatial TDR) in geo-environmental engineering

    Article • February 2014, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  34. Supercooled interfacial water in fine-grained soils probed by dielectric spectroscopy

    Article • The Cryosphere, December 2013, Copernicus GmbH

    Dr Norman Wagner

  35. Dielectric relaxation behavior of Callovo-Oxfordian clay rock: A hydraulic-mechanical-electromagnetic coupling approach

    Article • Journal of Geophysical Research Solid Earth, September 2013, American Geophysical Union (AGU)

    Dr Norman Wagner

  36. Supercooled interfacial water in fine grained soils probed by dielectric spectroscopy

    Article • The Cryosphere Discussions, April 2013, Copernicus GmbH

    Dr Norman Wagner

  37. Prediction of GPR Performance in Soils Using Broadband Dielectric Spectroscopy

    Article • January 2013, EAGE Publications

    Dr Norman Wagner

  38. Permittivity of ice at radio frequencies: Part II. Artificial and natural polycrystalline ice

    Article • Cold Regions Science and Technology, December 2012, Elsevier

    Dr Norman Wagner

  39. Permittivity of ice at radio frequencies: Part I. Coaxial transmission line cell

    Article • Cold Regions Science and Technology, October 2012, Elsevier

    Dr Norman Wagner

  40. Simultaneous determination of the dielectric relaxation behavior and soilwater characteristic curve of undisturbed soil samples

    Article • July 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  41. Spatial time domain reflectometry for monitoring of the hydrological water balance at a lysimeter test site in Thuringia/Germany

    Article • July 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  42. Frequency-dependant dielectric parameters of steel fiber reinforced concrete

    Article • June 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  43. Mechanical Spectroscopy of Natural and Synthetic Silicate Glasses and Melts

    Article • April 2012, Wiley

    Dr Norman Wagner

  44. A new technique for measuring broadband dielectric spectra of undisturbed soil samples

    Article • European Journal of Soil Science, March 2012, Wiley

    Dr Norman Wagner

  45. Experimental Investigations on the Frequency- and Temperature-Dependent Dielectric Material Properties of Soil

    Article • IEEE Transactions on Geoscience and Remote Sensing, July 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Norman Wagner

  46. On the relationship between matric potential and dielectric properties of organic free soils: a sensitivity study

    Article • Canadian Geotechnical Journal, October 2009, Canadian Science Publishing

    Dr Norman Wagner

  47. Spatial time domain reflectometry and its application for the measurement of water content distributions along flat ribbon cables in a full-scale levee model

    Article • Water Resources Research, February 2009, American Geophysical Union (AGU)

    Dr Norman Wagner

  48. Spatial Time Domain Reflectometry (Spatial TDR) – On the use in geohydraulics and geotechnics

    Article • June 2008, Taylor & Francis

    Dr Norman Wagner

  49. Spatial Time Domain Reflectometry (Spatial TDR) – On the use in geohydraulics and geotechnics

    Article • June 2008, Taylor & Francis

    Dr Norman Wagner

  50. Determination of the spatial TDR-sensor characteristics in strong dispersive subsoil using 3D-FEM frequency domain simulations in combination with microwave dielectric spectroscopy

    Article • Measurement Science and Technology, February 2007, Institute of Physics Publishing

    Dr Norman Wagner

  51. TDR measurements and simulations in high lossy bentonite materials

    Article • Measurement Science and Technology, February 2007, Institute of Physics Publishing

    Dr Norman Wagner

  52. Bestimmung von Feuchte- und Dichteverteilungen mit TDR-Sensoren (Determination of Moisture and Density Distributions using TDR-Sensors)

    Article • tm - Technisches Messen, January 2007, De Gruyter

    Dr Norman Wagner