Forschungszentrum Jülich: Multiscale Geophysics of soil-plant systems

Forschungszentrum Jülich: Hydrogeophysics

Professorship in Hydrogeophysics. This professorship is a joint appointment of the Forschungszentrum Jülich and the University of Cologne.

We develop and apply hydrogeophysical methods to enhance the characterization of the critical zone including aquifers, peatlands, permafrost soils and agricultural fields. One of our main foci is to enhance the resolution of small-scale heterogeneity related to the soil-plant system.

Research Topics:

• Hydrogeophysics, Hydrology and Permafrost Geophysics
• GPR, GPR Full-waveform Inversion
• Electromagnetic Wave Propagation
• Geophysical Modeling, Imaging and Inversion techniques
• Wetlands/Peatlands Geophysics, Environmental and Engineering Geophysics

News and Links:

• Mastertopic projects:
  • High-frequency GPR full-waveform inversion to characterize soil structures inside a lysimeter
  • Investigating the Advantages and Challenges of Using Drones with Ground Penetrating Radar for Geophysical Surveys
  • Optimizing Ground Penetrating Radar Antennas for Enhanced High-Resolution Imaging
  • Multichannel Ground Penetrating Radar: A Comprehensive Approach to Soil Characterization
  • Characterizing Peatland Subsurface Features Using Surface and Crosshole Ground Penetrating Radar
  • Non-invasive characterization and monitoring of the soil-plant continuum of using Ground Penetrating Radar for agricultural applications
     

Recent publications:

• Lärm, L., Bauer, F.M., van der Kruk, J., Vanderborght, J., Morandage, S., Vereecken, H. Schnepf, A., & Klotzsche, A., Linking horizontal crosshole GPR variability with root image information for maize crops, VADOSE ZONE JOURNAL 23 (1), DOI10.1002/vzj2.20293, 2023.
• Lärm, L., Bauer, F.M., Hermes, N, van der Kruk, J, Vereecken, H, Vanderborght, J, Nguyen, TH, Lopez, G, Seidel, SJ, Ewert, F, Schnepf, A, & Klotzsche, A, Multi-year belowground data of minirhizotron facilities in Selhausen, SCIENTIFIC DATA 10(1), DOI10.1038/s41597-023-02570-9, 2023.
• Hoven, D. Mester, A., Vereecken, H. & Klotzsche, A., Evaluation of starting model approaches and effective source wavelet variations for high-frequency ground-penetrating radar full-waveform  inversion, GEOPHYSICS 88 (2), KS27 -KS45, DOI:10.1190/GEO2021-0683.1, 2023.
• Haruzi, P., J. Schmäck, Z. Zhou, J. van der Kruk, H. Vereecken, J. Vanderborght, and A. Klotzsche, Detection of Tracer Plumes Using Full-Waveform Inversion of Time-Lapse Ground Penetrating Radar Data: A Numerical Study in a High-Resolution Aquifer Model. Water Resources Research, 58(5), e2021WR030110, 2022, doi: 10.1029/2021WR030110.
• Yu, Y., J.A. Huisman, A. Klotzsche, H. Vereecken, and L. Weihermüller, Coupled full-waveform inversion of horizontal borehole ground penetrating radar data to estimate soil hydraulic parameters: A synthetic study. Journal of Hydrology, 610, 127817 2022, doi: 10.1016/j.jhydrol.2022.127817.
• Schmäck, J., L. Weihermüller, A. Klotzsche, C. von Hebel, S. Pätzold, G. Welp, and H. Vereecken, Large-scale detection and quantification of harmful soil compaction in a post-mining landscape using multi-configuration electromagnetic induction. Soil Use and Management, 2021, doi: 10.1111/sum.12763.
• dal Bo, I., A. Klotzsche, R. Bol, G. Moradi, L. Weihermüller, H. Vereecken, and J. van der Kruk, GPR and EMI characterization of the hyperarid study site of Yungay, Chile: Implications of applying geophysical methods on Mars. Earth and Space Science, 8, e2021EA001790, 2021, doi: 10.1029/2021EA001790.
• Mozaffari, A., A. Klotzsche, Z. Zhou, H. Vereecken and J. van der Kruk, 3-D Electromagnetic modeling explains apparent-velocity increase in crosshole GPR data-borehole fluid effect correction method enables to incorporating high-angle traveltime data. IEEE Transactions on Geoscience and Remote Sensing, 2021, doi: 10.1109/TGRS.2021.3107451.
• Keskinen J., M. Looms, A. Klotzsche, and L. Nielsen, Practical data acquisition strategy for time-lapse experiments using crosshole GPR and full-waveform inversion. Journal of Applied Geophysics, 191, 104362 2021.
• Zhou, Z., A. Klotzsche, and H. Vereecken, Improving crosshole ground-penetrating radar full-waveform inversionresults by using progressively expanded bandwidths of the data. Near Surface geophysics, 19 (4), 465-487, 2021, doi: 10.1002/nsg.12154.
• Zhou, Z., A. Klotzsche, J. Schmäck, H. Vereecken, and J. van der Kruk, Improvement of ground-penetrating radar full-waveform inversion images using cone penetration test data. Geophysics, 86 (3), H13-H25, 2021.
• Yu, Y., L. Weihermüller, A. Klotzsche, L. Lärm, H. Vereecken, and J.A. Huisman, Sequential and coupled inversion of horizontal borehole ground penetrating radar data to estimate soil hydraulic properties at the field scale. Journal of Hydrology, 596, 126010, 2021.
• Schaller, M., I. dal Bo, T.A. Ehlers, A. Klotzsche, R. Drews, J.P. Fuentes-Espoz, and J. van der Kruk, Comparison of regolith physical and chemical characteristics with geophysical data along a climate and ecological gradient, Chilean Coastal Cordillera (26° to 38° S). Soil, 6 (2), 629-647, 2020.
• Zhou, Z., A. Klotzsche, T. Hermans, F. Nguyen, J. Schmäck, P. Haruzi, H. Vereecken, and J. van der Kruk, 3D aquifer characterization of the Hermalle-sous-Argenteau test site using crosshole GPR amplitude analysis and full-waveform inversion. Geophysics, 85 (6), H133-H148,2020.
• Mozaffari, A., A. Klotzsche, C. Warren, G. He, A. Giannopoulos, H. Vereecken, and J. van der Kruk, 2.5D crosshole GPR full-waveform inversion for synthetic and measured data. Geophysics, 85 (4), 1JA-Z18, 2020.
• Yu, Y., A. Klotzsche, L. Weihermüller, J.A. Huisman, J. Vanderborght, H. Vereecken, and J. van der Kruk, Estimating vertical soil water content profiles by combining horizontal borehole and dispersive surface ground penetrating radar data. Near Surface Geophysics, 18, 275-294, 2020, doi: 10.1002/nsg.12099.
• Kaufmann, M.S, A. Klotzsche, H. Vereecken, and J. van der Kruk, Simultaneous multi-channel multi-offset ground penetrating radar measurements for soil characterization. Vadose Zone Journal, 19:e20017, 2020,doi: 10.1002/uar2.20017.