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Tomography and hydrogeophysics

Tomography and hydrogeophysics

Tomography and hydrogeophysics

In this field of research we develop new techniques for decimetre to meter-scale reconstruction of geological structures relevant for fluid flow and transport. Our tomographic methods are mostly based on multi-level borehole data and recordings to invert aquifer structures. The information processed is manifold such as recorded hydraulic signals, tracer breakthrough curves, temperatures, CO2 or gas pressure or borehole breakouts. We currently develop computationally efficient procedures for tomographic reconstruction of fractured systems, as well as focus on new ways of coupled hydrogeophysical inversion.


Ringel, L. M., Illman, W. A., & Bayer, P. (2024). Recent developments, challenges, and future research directions in tomographic characterization of fractured aquifers. Journal of Hydrology, 631, 130709.

Römhild, L., Ringel, M. L., Liu, Q., Hu, L., Ptak, T. & Bayer, P. (2024). Hybrid Discrete Fracture Network Inversion of Hydraulic Tomography Data From a Fractured-Porous Field Site. Water Resources Research, 60, e2023WR036035.

Ringel, L.M., Jalali, M., Bayer, P. (2022). Characterization of the highly fractured zone at the Grimsel Test Site based on hydraulic tomography. Hydrol. Earth Syst. Sci., 26, 6443–6455.

Ringel, L. M., Jalali, M., and Bayer, P. (2022). Inversion of Hydraulic Tomography Data from the Grimsel Test Site with a Discrete Fracture Network Model, EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-2220, https://doi.org/10.5194/egusphere-egu22-2220.

Römhild, L., Fiandaca, G., Hu, L., Bayer, P. (2022). Imaging hydraulic conductivity by cross-borehole induced polarization – a novel inversion procedure. XXIV International Conference on Computational Methods in Water Resources (CMWR), Gdansk, Poland, 19-23 June 2022, Abstract#52.

Ringel, L. M., Jalali, M., Bayer, P. (2021). Stochastic Inversion of Three-Dimensional Discrete Fracture Network Structure With Hydraulic Tomography. – Water Resources Research. 57(12), e2021WR030401.

Ringel, L., Somogyvári, M., Jalali, M., Bayer, P. (2019). Comparison of hydraulic and tracer tomography for discrete fracture network inversion. Geosciences, 9, 274, 16 pp.

Kong, X.-Z., Deuber, C., Kittilä, A., Somogyvári, M., Mikutis, G., Bayer, P., Stark, W., Saar, M. (2018). Tomographic reservoir imaging with DNA-labeled silica nanotracers: The first field validation. Environmental Science and Technology, 52(23), 13681–13689.

Gueting, N., Vienken, T., Klotzsche, A., van der Kruk, J., Vanderborght, J., Vereecken, H., Englert, A. (2017). High resolution aquifer characterization using crosshole GPR full- waveform tomography: Comparison with direct-push and tracer test dataWater Resources Research, 53(1), 49-72.

Hu, L.,  Doetsch, J., Brauchler, R., Bayer, P. (2017). Characterizing CO2 plumes in deep saline formations: comparison and joint evaluation of time-lapse pressure and seismic tomography. Geophysics, 82(4), 1-70.

Moein Afshari, M. J., Somogyvari, M., Valley, B., Jalali, M., Loew, S., Bayer, P. (2018). Fracture network characterization using stress-based tomography. Journal of Geophysical Research – Solid Earth. 123(11), 9324-9340.

Somogyvári, M., Jalali, M., Jiménez, S., Bayer P. (2017). Synthetic fracture network characterization with transdimensional inversion. Water Resources Research, 53(6), 5104-5123.

Somogyvári, M., Bayer P. (2017). Field validation of thermal tracer tomography for reconstruction of aquifer heterogeneity. Water Resources Research, 6, 5070-5084.

Hu, L.,  Brauchler, R., Bayer, P. (2016). Detection of carbon dioxide leakage during injection in deep saline formations by pressure tomography. Water Resources Research, 52(7), 5676-5686.

Jiménez, S., Mariethoz, G., Brauchler, R., Bayer P. (2016). Smart pilot points using reversible-jump Markov-chain Monte Carlo. Water Resources Research, 52(5), 3966-3983.

Malama, B., Kuhlman, K.L., Brauchler, R., Bayer, P. (2016). Modeling cross-hole slug tests in an unconfined aquifer. Journal of Hydrology 540, 784–796.

Somogyvári, M., Bayer, P., Brauchler, R. (2016). Travel time based thermal tracer tomography. Hydrol. Earth Syst. Sci., 20, 1885–1901.

Hu, L., Bayer, P., Alt-Epping, P., Tatomir, A., Sauter, M., Brauchler, R. (2015). Time-lapse pressure tomography for characterizing CO2 plume evolution in a deep saline aquifer. International Journal of Greenhouse Gas Control, 39, 91-106.

Jiménez, S., Brauchler, R., Hu, R., Hu, L., Schmidt, S., Ptak, T., Bayer, P. (2015). Prediction of solute transport in a heterogeneous aquifer utilizing hydraulic conductivity and specific storage tomograms. Water Resources Research, 51(7), 5504-5520.

Brauchler, R., Hu, R., Hu, L., Jimenez, S., Bayer, P., Dietrich, P., Ptak, T. (2013). Rapid field application of hydraulic tomography for resolving aquifer heterogeneity in unconsolidated sediments. Water Resources Research, 49(4), 2013–2024.

Jimenéz, S., Brauchler, R., Bayer, P. (2013). A new sequential procedure for hydraulic tomographic inversion. Advances in Water Resources, 42(A), 59–70.

Hu, R., Brauchler, R., Herold, M., Bayer, P., (2011). Hydraulic tomography analogue study: Coupling travel time and steady shape inversion. Journal of Hydrology, 409(1-2), 350-362.

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