J. Holdt, V. Cantarella, D. Buchner, A. Mellage, O.A. Cirpka, J.-P. Duda: Facies and depositional environments of a holocene floodplain: implications for modeling biogeochemical reactions in aquifers. Hydrogeol. J. (submitted), 2024.

C. Strobel, A. Störiko, O.A. Cirpka, A. Mellage: Are we there yet? A critical experimental assessment of the application of induced polarization for monitoring geochemical processes. Water Resour. Res. (submitted), 2024.

J.L. Schaper, C. Zarfl, J. Lewandowski, O.A. Cirpka: VTraFlux - A model toolbox to determine transient vertical exchange fluxes in hyporheic sediments from time series of natural tracers. J. Hydrol. (submitted), 2024.

T. Graf, A. Basten, O.A. Cirpka, I. Neuweiler, M.A. Rahmann, F. Spitzenberg: Physical experiments, visualization, and numerical analysis of free thermal and thermohaline convection in quasi 2-D homogeneous isotropic porous media. Transport Porous Media, (submitted), 2024.

J.L. Schaper, O.A. Cirpka, J. Lewandowski, C. Zarfl: Electrical conductivity fluctuations as a tracer to determine time-dependent transport characteristics in hyporheic sediments. J. Hydrol. 643: 131914, 2024, doi: 10.1016/j.jhydrol.2024.131914.

A. Ershadi, M. Finkel, B. Liu, OA. Cirpka, P. Grathwohl: Ensemble surrogate modeling of advective-dispersive transport with intraparticle diffusion model for column-leaching test. J. Contam. Hydrol. 267: 104423, 2024, doi: 10.1016/j.jconhyd.2024.104423.

T. Yuan, A. Cherkouk, C. Fischer: Numerical modeling and simulation of microbially induced calcite precipitation on a cement surface at the pore scale. Adv. Water Resour. 191, 104671, 2024, doi: 10.1016/j.advwatres.2024.104671

E. Petrova, J. Meierdierks, M. Finkel, P. Grathwohl: Legacy pollutants in fractured aquifers: Analytical approximations for back diffusion to predict atrazine concentrations under uncertainty. J. Contam. Hydrol. 255, 104161, 2023, doi: 10.1016/j.jconhyd.2023.104161

C. Strobel, M. Doerrich, E.-H. Stieff., J.A. Huisman, O.A. Cirpka, A. Mellage: Organic matter matters - The imaginary conductivity of sediments rich in solid organic carbon. Geophys. Res. Let. 50(23): e2023GL104630, 2023, doi: 10.1029/2023GL104630.

A. Ershadi, M.  Finkel, B. Susset, P. Grathwohl: Applicability of machine learning models for the assessment of long-term pollutant leaching from solid waste materials. Waste Manag. 171: 337–349, 2023, doi: 10.1016/j.wasman.2023.09.001.
P. Dong, M. Yin, Y. Zhang, K. Chen, M. Finkel, P. Grathwohl, C. Zheng: A fractional-order dual-continuum model to capture non-Fickian solute transport in a regional-scale fractured aqui-fer. J. Contam. Hydrol. 258, 104231, 2023, doi: 10.1016/j.jconhyd.2023.104231

J. Allgeier, O.A. Cirpka: Surrogate-model assisted plausibility-check, calibration, and posterior-distribution evaluation of subsurface-flow models. Water Resour. Res. 59(7): e2023WR034453, 2023, doi: 10.1029/2023WR034453.

B. Waldowski, E. Sánchez-Léon, O.A. Cirpka, N. Brandhorst, H.-J. Hendricks Franssen, I. Neuweiler: Estimating groundwater recharge in fully integrated pde-based hydrological models. Water Resour. Res. 59(3): e2022WR033570, 2023, doi: 10.1029/2022WR032430.

C. Strobel, S. Abramov, J.A. Huisman, O.A. Cirpka, A. Mellage: Spectral Induced Polarization (SIP) of denitrification-driven microbial activity in column experiments packed with calcareous aquifer sediments. J. Geophys. Res. Biogeosci. 128(1):  e2022JG007190, 2023, doi: 10.1029/2022JG007190.

M.-M. Stettler, M. Dentz, O.A. Cirpka: Linear stochastic analysis of the partial reversibility of ensemble and effective dispersion in heterogeneous porous media. Water Resour. Res. 59(1): e2022WR033570, 2023, doi: 10.1029/2022WR033570.

A. Störiko, H. Pagel, A. Mellage, P. van Cappellen, O.A. Cirpka: Denitrification-driven transcription and enzyme production at the river-groundwater interface: Insights from reactive-transport modeling. Water Resour. Res. 58(8): e2021WR031584, 2022, doi: 10.1029/2021WR031584.

R. Maier, C. Leven, D. Strasser, B. Odenwald, O.A. Cirpka: Tiefenorientierte Pumpversuche zur Bestimmung der hydraulischen Anisotropie in einem geschichteten Grundwasserleiter. Grundwasser 27(3): 197-211, 2022, doi: 10.1007/s00767-022-00519-0.

O.A. Cirpka, M.-M. Stettler, M. Dentz: Spatial Markov Model for the prediction of travel-time-based solute dispersion in three-dimensional heterogeneous media. Water Resour. Res. 58(6): e2022WR032215, 2022, doi: 10.1029/2022WR032215.

J.L. Schaper, C. Zarfl, K. Meinikmann, E. Banks, S. Baron, O.A. Cirpka, J. Lewandowski: Spatial variability of radon production rates in an alluvial aquifer affects travel time estimates of groundwater originating from a losing stream. Water Resour. Res. 58(4): e2021WR030635, 2022, doi: 10.1029/2021WR030635.

F. Sun, A. Mellage, Z. Wang, R. Bakkour, C. Griebler, M. Thullner, O.A. Cirpka, M. Elsner: Toward improved bioremediation strategies: Response of BAM degradation activity to concentration and flow changes in an inoculated bench-scale sediment tank. Environ. Sci. Technol. 56(7): 4050-4061, 2022, doi: 10.1021/acs.est.1c05259.

R. Maier, C. Leven, E. Sánchez-Léon, D. Strasser, M. Stoll, O.A. Cirpka: Revealing vertical aquifer heterogeneity and hydraulic anisotropy by pumping partially penetrating wells. Hydrogeol. J. 30(2): 463-477, 2022, doi: 10.1007/s10040-022-02458-9.

E. Petrova, E. Kortunov, K.U. Mayer, P. Grathwohl, M. Finkel: Travel time-based modelling of nitrate reduction in a fractured limestone aquifer by pyrite and iron carbonates under pore size limitation. J. Contam. Hydrol. 248: 103983, 2022, doi: 10.1016/j.jconhyd.2022.103983.

B. Liu, M. Finkel, P. Grathwohl: First order approximation for coupled film and intraparticle pore diffusion to model sorption/desorption batch experiments. J. Hazard. Mater. 429: 128314, 2022, doi: 10.1016/j.jhazmat.2022.128314.

K. Osenbrück, E. Blendinger, C. Leven, H. Rügner, M. Finkel, N. Jakus, H. Schulz, P. Grathwohl: Nitrate reduction potential of a fractured Middle Triassic carbonate aquifer in Southwest Germany. Hydrogeol. J. 30: 163-180, 2022, doi: 10.1007/s10040-021-02418-9.

B.M. Bajracharya, C.M. Smeaton, I. Markelov, E. Markelov, C. Lu, O.A. Cirpka, P. van Cappellen: Organic matter degradation in energy-limited subsurface environments – a bioenergetics-informed modeling approach. Geomicrobiol. J. 39(1): 1-16, 2022, doi: 10.1080/01490451.2021.1998256.

B. Liu, M. Finkel, P. Grathwohl: Mass Transfer Principles in Column Percolation Tests: Initial Conditions and Tailing in Heterogeneous Materials. Materials 14(16): 4708, 2021, doi: 10.3390/ma14164708.

A.J. Siade, B.C. Bostick, O.A. Cirpka, H. Prommer: Unraveling biogeochemical complexity through better integration of experiments and modeling. Environ. Sci. Proc. Imp. 23(12): 1825-1833, 2021, doi: 10.1039/D1EM00303H.

S. Klingler, S. Martin, O.A. Cirpka, P. Dietrich, C. Leven: Kombination geophysikalischer und hydrogeologischer Methoden zur gezielten Erkundung feinkörniger Talfüllungen. Grundwasser 26(4): 379-394, 2021, doi: 10.1007/s00767-021-00494-y.

P. Wang, O.A. Cirpka: Surface transient storage under low-flow conditions in streams with rough bathymetry. Water Resour. Res. 57(12): e2021WR029899, 2021, doi: 10.1029/2021WR029899.

B. Schalge, G. Baroni, B. Haese, D. Erdal, G. Geppert, P. Saavedra, V. Haefliger, H. Vereecken, S. Attinger, H. Kunstmann, O.A. Cirpka, F. Ament, S. Kollet, I. Neuweiler, H.-J. Hendricks Franssen, C. Simmer: Presentation and discussion of the high resolution atmosphere-land surface-subsurface simulation dataset of the virtual Neckar catchment for the period 2007-2015. Earth Sys. Sci. Data 13: 4437-4464, 2021, doi: 10.5194/essd-13-4437-2021.

J. Allgeier, S. Martin, O.A. Cirpka: Systematic evaluation of geometry-driven lateral river-groundwater exchange in floodplains. Water Resour. Res. 57(8): e2021WR030239, 2021, doi: 10.1029/2021WR030239.

F. Sun, A. Mellage, M. Gharasoo, A. Melsbach, X. Cao, R. Zimmermann, C. Griebler, M. Thullner, O.A. Cirpka, M. Elsner: Mass transfer-limited biodegradation at low concentrations – evidence from reactive transport modeling of isotope profiles in a bench-scale aquifer. Environ. Sci. Technol. 55(11): 7386-7397, 2021, doi: 10.1021/acs.est.0c08566.

A. Störiko, H. Pagel, A. Mellage, O.A. Cirpka: Does it pay off to explicitly link functional gene expression to denitrification rates in reaction models? Frontiers Microbiol. 12:684146, 2021, doi: 10.3389/fmicb.2021.684146.

P. Selzer, J. Allgeier, R. Terrien, O.A. Cirpka: Finite-Volume flux reconstruction and semi-analytical particle tracking on triangular prisms for Finite-Element-type models of variably-saturated flow. Advances Water Resour. 154: 103944, 2021, doi: 10.1016/j.advwatres.2021.103944.

J. Sorwat, A. Mellage, M. Maisch, A. Kappler, O.A. Cirpka, J.M. Byrne: Chromium (VI) removal kinetics by magnetite coated sand: Small-scale flow-through column experiments. J. Hazard. Mater. 415: 125648, 2021, doi: 10.1016/j.jhazmat.2021.125648.

F. Sun, J. Peters, M. Thullner, O.A. Cirpka, M. Elsner: Magnitude of diffusion- and transverse dispersion-induced isotope fractionation of organic compounds in aqueous systems. Environ. Sci. Technol. 55(8): 4772–4782, 2021, doi: 10.1021/acs.est.0c06741.

L. Li, P. Sullivan, P. Benettin, K. Bishop, S. Brantley, O.A. Cirpka, J.K. Kirchner, J.L.A. Knapp, I. van Meerveld, A. Rinaldo, J. Seibert, H. Wen: Toward an integrated theory of catchment science. WIREs Water 8:e1495, 2021, doi: 10.1002/wat2.1495.

A.S. Elshall, M. Ye, M. Finkel: Evaluating two multi-model simulation–optimization approaches for managing groundwater contaminant plumes. J. Hydrol. 590: 125427, 2020, doi: 10.1016/j.jhydrol.2020.125427.

T.K.D. Weber, M. Finkel, M. da Conceição Gonçalves, H. Vereecken, E. Diamantopoulos: Pedotransfer Function for the Brunswick Soil Hydraulic Property Model and Comparison to the van Genuchten-Mualem Model. Water Resour. Res. 56: e2019WR026820, 2020, doi: 10.1029/2019WR026820.

S. Klingler, O.A. Cirpka, U. Werban, C. Leven, P. Dietrich: Direct-push color logging images spatial heterogeneity of organic carbon in floodplain sediments. J. Geophys. Res. Biogeosci. 125(12): e2020JG005887, 2020, doi: 10.1029/2020JG005887.

A. Schäfer Rodrigues Silva, A. Guthke, M. Höge, O.A. Cirpka, W. Nowak: Strategies for simplifying reactive transport models - a Bayesian model comparison. Water Resour. Res. 56(11): e2020WR028100, 2020, doi: 10.1029/2020WR028100.

D. Erdal, S. Xiao, W. Nowak, O.A. Cirpka: Sampling behavioral model parameters for ensemble-based sensitivity analysis using Gaussian Process Emulation and Active Subspaces. Stoch. Environ. Res. Risk Ass. 34: 1813–1830, 2020, doi: 10.1007/s00477-020-01867-0.

S. Martin, S. Klingler, P. Dietrich, C. Leven, O.A. Cirpka: Structural controls on the hydrogeological functioning of a floodplain. Hydrogeol. J. 28(8): 2675-2696, 2020, doi: 10.1007/s10040-020-02225-8.

F.M. D'Affonseca, M. Finkel, O.A. Cirpka: Combining implicit geological modeling, field surveys, and hydrogeological modeling to describe groundwater flow in a karst aquifer. Hydrogeol. J. 28(8): 2779-2802, 2020, doi: 10.1007/s10040-020-02220-z. This article has been selected as Editor's Choice by the Hydrogeology Journal Editors

E. Sanchez-León, C. Leven, D. Erdal, O.A. Cirpka: Comparison of two Ensemble-Kalman based methods for estimating aquifer parameters from real 3-D hydraulic and tracer tomographic tests. Geosci. 10: 462, 2020, doi: 10.3390/geosciences10110462.

J. Allgeier, A. Gonzáles-Nicolás, W. Nowak, O.A. Cirpka: A stochastic framework to optimize monitoring strategies for delineating groundwater divides. Frontiers Earth Sci. 8: 554845, 2020, doi: 10.3389/feart.2020.554845.

M. Finkel, A. Baur, K. Osenbrück, H. Rügner, C. Leven, M. Schwientek, T.K.D. Weber, U. Hahn, T. Streck, O.A. Cirpka, T. Walter, P. Grathwohl: Managing collaborative research data for integrated, interdisciplinary environmental research. Earth Sci. Inform. 13: 641–654, 2020, doi: 10.1007/s12145-020-00441-0.

D. Erdal, O.A. Cirpka: Technical Note: Improved sampling of behavioral subsurface flow model parameters using active subspaces. Hydrol. Earth Sys. Sci. 24: 4567–4574, 2020, doi: 10.5194/hess-24-4567-2020..

B. Rathi, J. Jamieson, J, Sun, A. Siade, M. Zhu, O.A. Cirpka, H. Prommer: Process-based modeling of arsenic(III) oxidation by manganese oxides under circumneutral pH conditions. Water. Res. 185: 116195, 2020, doi: 10.1016/j.watres.2020.116195.

P. Selzer, O.A. Cirpka: Postprocessing of standard Finite-Element velocity fields for accurate particle tracking applied to groundwater flow. Computat. Geosci. 24(4), 1605-1624, 2020, doi: 10.1007/s10596-020-09969-y.

E. Sanchez-León, D. Erdal, C. Leven, O.A. Cirpka: Comparison of two Ensemble-Kalman based methods for estimating aquifer parameters from virtual 2-D hydraulic and tracer tomographic tests. Geosci. 10: 276, 2020, doi: 10.3390/geosciences10070276.

R. Maier, A. Gonzalez-Nicolas, C. Leven, W. Nowak, O.A. Cirpka: Joint optimization of measurement and modeling strategies with application to radial flow in stratified aquifers. Water Resour. Res. 56(7): e2019WR026872, 2020, doi: 10.1029/2019WR026872.

Y. Bai, A. Mellage, O.A. Cirpka, T. Sun, L. Angenent, S.B. Haderlein, A. Kappler: AQDS and redox-active NOM enables microbial Fe(III)-mineral reduction at cm-scales. Environ. Sci. Technol. 54(7): 4131-4139, 2020, doi: 10.1021/acs.est.9b07134.

Y. Liu, C. Zarfl, N. Basu, O.A. Cirpka: Modeling the fate of pharmaceuticals in a fourth-order river under competing assumptions of transient storage. Water Resour. Res. 56(3): e2019WR026100, 2020, doi: 10.1029/2019WR026100.

S. Klingler, C. Leven, O.A. Cirpka, P. Dietrich: Anomaly effect-driven optimization of direct-current geoelectric mapping surveys in large areas. J. Appl. Geophys. 176: 1004002, 2020, doi: 10.1016/j.jappgeo.2020.104002.

E. Stopelli, V.T. Duyen, T.T. Mai, P.T.K. Trang, P.H. Viet, A. Lightfoot, R. Kipfer, M. Schneider, E. Eiche, A. Kontny, T. Neumann, M. Glodowska, M. Patzner, A. Kappler, S. Kleindienst, B. Rathi, O. Cirpka, B. Bostick, H. Prommer, L.H.E. Winkel, M. Berg: Spatial and temporal evolution of groundwater arsenic contamination in the Red River delta, Vietnam: interplay of mobilisation and retardation processes. Sci Tot. Environ. 717: 137143, 2020, doi: 10.1016/j.scitotenv.2020.137143.

N. Bandow, M. Finkel, P. Grathwohl, U. Kalbe: Influence of flow rate and particle size on local equilibrium in column percolation tests using crushed masonry. J. Mater. Cycles Waste Manag. 21: 642-651, 2019, doi: 10.1007/s10163-019-00827-3.

A.U. Utom, U. Werban, C. Leven, C. Müller, P. Dietrich: Adaptive observation-based subsurface conceptual site modeling framework combining interdisciplinary methodologies: a case study on advancing the understanding of a groundwater nitrate plume occurrence. Environ. Sci. Pollut. Res. 26(16): 15754-15766, 2019, doi: 10.1007/s11356-019-05048-7.

M. Loschko, T. Wöhling, D.L. Rudolph, O.A. Cirpka: An electron-balance based approach to predict the decreasing denitrification potential of an aquifer. Groundwater 57(6): 925-939, 2019, doi: 10.1111/gwat.12876.

D. Erdal, O.A. Cirpka: Global sensitivity analysis and adaptive stochastic sampling of a subsurface-flow model using active subspaces. Hydrol. Earth Sys. Sci. 23: 3787-3805, 2019, doi: 10.5194/hess-23-3787-2019.

S. Marozava, A. Meyer, A. Perez-de-Mora, M.G. Gharasoo, L. Zhuo, H. Wang, O.A. Cirpka, R. Meckenstock, M. Elsner: Mass transfer limitation during slow anaerobic biodegradation of 2-methylnaphthalene. Environ. Sci. Technol. 53(16): 9481-9490, 2019, doi: 10.1021/acs.est.9b01152.

S. Seidensticker, C. Zarfl, O.A. Cirpka, P. Grathwohl: Microplastic-contaminant interactions: influence of non-linearity and coupled mass transfer. Environ. Tox. Chem. 38(8): 1635-1644, 2019, doi: 10.1002/etc.4447.

J.P. Bennett, C.P. Haslauer, M. Ross, O.A. Cirpka: An open, object-based framework for generating anisotropy in sedimentary subsurface models. Groundwater 57(3): 420-429, 2019, doi: 10.1111/gwat.12803.

Y. Liu, C. Zarfl, N.B. Basu, O.A. Cirpka: Turnover and legacy of sediment-associated PAH in a baseflow-dominated river. Sci. Total Environ. 671: 754-764, 2019. doi: 10.1016/j.scitotenv.2019.03.236

D. Erdal, G. Baroni, E. Sanchez-Léon, O.A. Cirpka: The value of simplified models for spin up of complex models with an application to subsurface hydrology. Computers and Geosciences 126: 62-72, 2019, doi: 10.1016/j.cageo.2019.01.014 .

G. Guillet, J.L.A. Knapp, S. Merel, O.A. Cirpka, P. Grathwohl, C. Zwiener, M. Schwientek: Fate of wastewater contaminants in rivers: using conservative-tracer based transfer functions to assess reactive transport. Sci. Total Environ. 656: 1250-1260, 2019, doi: 10.1016/j.scitotenv.2018.11.379.

J.L.A. Knapp, K. Osenbrück, M. Brennwald, O.A. Cirpka: In-situ mass spectrometry improves the estimation of stream reaeration from gas-tracer tests. Sci. Total Environ. 655: 1062-1070, 2019, doi: 10.1016/j.scitotenv.2018.11.300 .

M.G. Gharasoo, B. Ehrl, O.A. Cirpka, M. Elsner: Modeling of contaminant biodegradation and compound-specific isotope fractionation in chemostats at extremely low dilution rates. Environ. Sci. Technol. 53(3): 1186-1196, 2019, doi: 10.1021/acs.est.8b02498.

J.L.A. Knapp, O.A. Cirpka: A critical assessment of relating resazurin-resorufin experiments to reach-scale metabolism in lowland streams. J. Geophys. Res. Biogeosci. 123(12): 3538-3555, 2018, doi: 10.1029/2018JG004797.

F. Fischer, O.A. Cirpka, K.-U. Goss, L. Henneberger, B.I. Escher: Application of experimental polystyrene partition constants and diffusion coefficients to predict the sorption of neutral organic chemicals to multi-well plates in in vivo and in vitro bioassays. Environ. Sci. Technol.  52 (22): 13511–13522, 2018, doi: 10.1021/acs.est.8b04246.

Y. Liu, C. Zarfl, N. Basu, M. Schwientek, O.A. Cirpka: Contributions of catchment and in-stream processes to suspended sediment transport in a dominantly groundwater-fed catchment. Hydrol. Earth Sys. Sci. 22: 3903-3921, 2018, doi: 10.5194/hess-22-3903-2018.

M. Grösbacher, D. Eckert, O.A. Cirpka, C. Griebler: Contaminant concentration versus flow velocity - drivers of biodegradation and microbial growth in groundwater model systems. Biodegr. 29(3): 211-232, 2018, doi: 10.1007/s10532-018-9824-2.

C. Lu, Z. Wang, Y. Zhao, S. Singh Rathore, J. Huo, Y. Tang, M. Liu, R. Gong, O.A. Cirpka, J. Luo: A mobile-mobile transport model for simulating reactive transport in connected heterogeneous fields. J. Hydrol. 560: 97-108, 2018, doi: 10.1016/j.jhydrol.2018.02.073.

M. Loschko, T. Wöhling, D.L. Rudolph, O.A. Cirpka: Accounting for the decreasing reaction potential of heterogeneous aquifers in a stochastic framework of aquifer-scale reactive transport. Water Resour. Res. 54(1): 442-463, 2018, doi: 10.1002/2017WR021645.

S.K. Hansen, C.P. Haslauer, O.A. Cirpka, V.V. Vesselinov: Direct breakthrough curve prediction from statistics of heterogeneous conductivity fields. Water Resour. Res. 54(1): 271-285, 2018, doi: 10.1002/2017WR020450.

S. Seidensticker, C. Zarfl, O.A. Cirpka, G. Fellenberg, P. Grathwohl: Shift in mass transfer of wastewater contaminants from microplastics in presence of dissolved substances. Environ. Sci. Technol. 51(21): 12254-12263, 2017, 2017, doi: 10.1021/acs.est.7b02664.

D. Werner, K.M. Bushnaf, G. Mangse, P. Meynet, R.J. Davenport, O.A. Cirpka: Mechanisms of distinct activated carbon and biochar amendment effects on petroleum vapour bio-filtration in soil. Environ. Sci.: Processes Impacts 19: 1260-1269, 2017, doi: 10.1039/C7EM00309A.

J.L.A. Knapp, O.A. Cirpka: Determination of hyporheic travel-time distributions and other parameters from concurrent conservative and reactive tracer tests by local-in-global optimization. Water Resour. Res., 53(6): 4984:5001, 2017, doi: 10.1002/2017WR020734.

M. Finkel, P. Grathwohl: Impact of pre-equilibration and diffusion limited release kinetics on effluent concentration in column leaching tests: Insights from numerical simulations. Waste Manag., 63: 58–73, 2017, doi: 10.1016/j.wasman.2016.11.031.

J.P. Bennett, C.P. Haslauer, O.A. Cirpka: The impact of sedimentary anisotropy on solute mixing in realistic stacked scour-pool structures. Water Resour. Res. 53(4): 2813–2832, 2017, doi: 10.1002/2016WR019665.

J.L.A. Knapp, R. González-Pinzón, J.D. Drummond, L.G. Larsen, O.A. Cirpka, J.W. Harvey: Tracer-based characterization of hyporheic exchange and benthic biolayers in streams. Water Resour. Res. 53(2): 1575.1594, 2017, doi: 10.1002/2016WR019393.

O. Klein, O.A. Cirpka, P. Bastian, O. Ippisch: Efficient geostatistical inversion of transient groundwater flow using preconditioned nonlinear conjugate gradients. Advances Water Resour. 102: 161-177, 2017., doi: 10.1016/j.advwatres.2016.12.006

D. Erdal, O.A. Cirpka: Preconditioning an Ensemble Kalman filter for groundwater flow using environmental-tracer observations. J. Hydrol. 545: 42-54, 2017, doi:10.1016/j.jhydrol.2016.11.064.

S. Spahr, O.A. Cirpka, U. von Gunten, T.B. Hofstetter: Formation of N-nitrosodimethylamine during chloramination of secondary and tertiary amines: Role of molecular oxygen and radical intermediates. Environ. Sci. Technol. 51(1): 280-290, 2017, doi: 10.1021/acs.est.6b04780.

D.L. Hochstetler, W. Barrash, C. Leven, M. Cardiff, F. Chidichimo, P.K. Kitanidis: Hydraulic tomography: Continuity and discontinuity of high-K and low-K zones, Groundwater, 54(2): 171-185, 2016, doi: 10.1111/gwat.12344.

O.A. Cirpka, A.J. Valocchi: Debates - stochastic subsurface hydrology from theory to practice: Does stochastic subsurface hydrology help solving practical problems of contaminant hydrogeology? Water Resour. Res. 52(12): 9218-9227, 2016, doi: 10.1002/2016WR019087.

M. Finkel, P. Grathwohl, O.A. Cirpka: A travel-time based approach to model kinetic sorption in highly heterogeneous porous media via reactive hydrofacies. Water Resour. Res. 52(12): 9390-9411, 2016, doi: 10.1002/2016WR019147.

M. Loschko, T. Wöhling, D.L. Rudolph, O.A. Cirpka: Cumulative relative reactivity: a concept for modeling aquifer-scale reactive transport. Water Resour. Res. 52(10): 8117-8137, 2016, doi: 10.1002/2016WR019080.

D. von Gunten, T. Wöhling, C.P. Haslauer, D. Merchán, J. Causapé, O.A. Cirpka: Using an integrated hydrological model to estimate the usefulness of meteorological drought indices in a changing climate. Hydrol. Earth Sys. Sci. 20: 4159-4175, 2016, doi: 10.5194/hess-20-4159-2016.

Y. Ye, G. Chiogna, O.A. Cirpka, P. Grathwohl, M. Rolle: Experimental investigation of transverse mixing in porous media under helical flow conditions. Phys. Rev. E 94(1): 013113, 2016, doi: 10.1103/PhysRevE.94.013113.

E. Sanchez-León, C. Leven, C.P. Haslauer, O.A. Cirpka: Combining 3-D hydraulic tomography with tracer tests for improved transport characterization. Groundwater 54(4): 498-507, 2016, doi: 10.1111/gwat.12381.

A. Sanz-Prat, C. Lu, R.T. Amos, M. Finkel, D.W. Blowes, O.A. Cirpka: Exposure-time based modeling of nonlinear reactive transport in porous media subject to physical and geochemical heterogeneity. J. Contam. Hydrol. 192: 35-49, 2016, doi: 10.1016/j.jconhyd.2016.06.002.

H. Schürner, M. Maier, D. Eckert, R. Brejcha, C.-C. Neumann, C. Stumpp, O.A. Cirpka, M. Elsner: Compound-specific stable isotope fractionation of pesticides and pharmaceuticals in a mesoscale aquifer model. Environ. Sci. Technol. 50(11): 5729–5739, 2016, doi: 10.1021/acs.est.5b03828.

G. Chiogna, O.A. Cirpka, P. Herrera: Helical flow and transient solute dilution in porous media. Transport Porous Media 111(3): 591-603, 2016, doi: 10.1007/s11242-015-0613-7.

A. Sanz-Prat, C. Lu, M. Finkel, O.A. Cirpka: Using travel times to simulate multi-dimensional bi-oreactive transport in time-periodic flows. J. Contam. Hydrol. 187: 1-17, 2016, doi: 10.1016/j.jconhyd.2016.01.005.

D. Erdal, O.A. Cirpka: Joint inference of groundwater-recharge and hydraulic-conductivity fields from head data using the Ensemble-Kalman Filter. Hydrol. Earth Sys. Sci. 20(1): 555-569, 2016, doi: 10.5194/hess-20-555-2016.

A. Rein, O. Holm, S. Trapp, S. Popp-Hofmann, M. Bittens, C. Leven, P. Dietrich: Comparison of phytoscreening and direct-push-based site investigation at a rural megasite contaminated with chlorinated ethenes, Ground Water Monit. Remed., 35(4): 45–56, 2015, doi: 10.1111/gwmr.12122.

Y. Ye, G. Chiogna, O.A. Cirpka, P. Grathwohl, M. Rolle: Experimental evidence of helical flow in porous media. Phys. Rev. Let. 115(19): 194502, 2015, doi: 10.1103/PhysRevLett.115.194502.

D. von Gunten, T. Wöhling, C. Haslauer, D. Merchán, J. Causapé, O.A. Cirpka: Estimating climate-change effects on a Mediterranean catchment under various irrigation conditions. J. Hydrol. Reg. Stud. 4: 550-570, 2015, doi: 10.1016/j.ejrh.2015.08.001.

Y. Ye, G. Chiogna, O.A. Cirpka, P. Grathwohl, M. Rolle: Enhancement of plume dilution in two- and three-dimensional porous media by flow focusing in high-permeability inclusions. Water Resour. Res. 51(7): 5582–5602, 2015, doi: 10.1002/2015WR016962.

J.L.A. Knapp, K. Osenbrück, O.A. Cirpka: Impact of non-idealities in gas-tracer tests on the estimation of reaeration, respiration, and photosynthesis rates in streams. Water Res. 83: 205-216, 2015, doi: 10.1016/j.watres.2015.06.032.

A. Mellage, D. Eckert, M. Grösbacher, A.Z. Inan, O.A. Cirpka, C. Griebler: Dynamics of suspended and attached aerobic toluene degraders in small-scale flow-through sediment systems under growth and starvation conditions. Environ. Sci. Technol. 49(12): 7161-7169, 2015, doi: 10.1021/es5058538.

F. Huq, S.B. Haderlein, O.A. Cirpka, M. Nowak, P. Blum, G. Grathwohl: Flow-through experiments on water-rock interactions in a sandstone sample caused by CO₂ injection at pressures and temperatures mimicking reservoir conditions. Appl. Geochem. 58: 136-146, 2015, doi: 10.1016/j.apgeochem.2015.04.006.

K.O. Doro, O.A. Cirpka, C. Leven: Tracer tomography: Conceptual design and field experiments using heat as tracer. Groundwater 53(S1): 139-148, 2015, doi: 10.1111/gwat.12299.

A. Sanz-Prat, C. Lu, M. Finkel, O.A. Cirpka: On the validity of travel-time based nonlinear bioreactive transport models in steady-state flow. J. Contam. Hydrol. 175-176: 26-43, 2015, doi: 10.1016/j.jconhyd.2015.02.003.

R. González-Pinzón, A.S. Ward, C.E. Hatch, A.N. Wlostowski, K. Singha, M.N. Gooseff, R. Haggerty, J.W. Harvey, O.A. Cirpka, J.T. Brock: A field comparison of multiple techniques to quantify surface water – groundwater interactions. Freshwater Sci. 34(1): 139-160, 2015, doi: 10.1086/679738.

O.A. Cirpka, G. Chiogna, M. Rolle, A. Bellin: Transverse mixing in three-dimensional non-stationary anisotropic heterogeneous porous media. Water Resour. Res. 51(1): 241-260, 2015, doi: 10.1002/2014WR015331.

G. Chiogna, O.A. Cirpka, M. Rolle, A. Bellin: Helical flow in three-dimensional non-stationary anisotropic heterogeneous porous media. Water Resour. Res. 51(1): 261-280, 2015, doi: 10.1002/2014WR015330.

E.D. Swanner, A.M. Mloszewska, O.A. Cirpka, R. Schoenberg, K.O. Konhauser, A. Kappler: Toxic levels of Fe(II) in Archean seawater modulated oxygen production. Nature Geosci. 8(2): 126-130, 2015, doi: 10.1038/ngeo2327.

C.M. Haberer, M. Rolle, O.A. Cirpka, O. Grathwohl: Impact of heterogeneity on oxygen transfer in a fluctuating capillary fringe. Groundwater 53(1): 57-70, 2015, doi:10.1111/gwat.12149.

D. Eckert, P. Kürzinger, R. Bauer, C. Griebler, O.A. Cirpka: Fringe-controlled biodegradation under dynamic conditions: Quasi 2-D flow-through experiments and reactive-transport modeling. J. Contam. Hydrol. 172: 100-111, 2015, doi: 10.1016/j.jconhyd.2014.11.003.

Y. Ye, G. Chiogna, O.A. Cirpka, P. Grathwohl, M. Rolle: Experimental investigation of compound-specific dilution of solute plumes in saturated porous media: 2-D versus 3-D flow-through systems. J. Contam. Hydrol. 172: 33-47, 2015, doi: 10.1016/j.jconhyd.2014.11.002.

V. Wagner, T. Li, P. Bayer, C. Leven, P. Dietrich, P. Blum: Thermal tracer testing in a sedimentary aquifer: field experiment (Lauswiesen, Germany) and numerical simulation, Hydrogeol. J. 22(1): 175-187, 2014 doi: 10.1007/s10040-013-1059-z.

N.N. Ameen, N. Klüglein, E. Appel, E. Petrovsky, A. Kappler, C. Leven: Effect of hydrocarbon-contaminated fluctuating groundwater on magnetic properties of shallow sediments, Stud. Geophys. Geodaet. 58(3): 442-460, 2014, doi: 10.1007/s11200-014-0407-3.

M. Fleischer, D. van Ree, C. Leven: Where can cone penetrometer technology be applied? development of a map of Europe regarding the soil penetrability, Environ. Sci. Pollut. Res. 21(15): 9016-9027, 2014, doi: 10.1007/s11356-014-2749-3.

U. Sauer, C. Schütze, C. Leven, S. Schlömer, P. Dietrich: An integrative hierarchical monitoring approach applied at a natural analogue site to monitor CO₂ degassing areas, Acta Geotech. 9(1): 127-133, 2014, doi: 10.1007/s11440-013-0224-9.

Z. Liao, K. Osenbrück, O.A. Cirpka: Non-stationary nonparametric inference of river-to-groundwater travel-time distributions. J. Hydrol. 519(D): 3386-3399, 2014, doi: 10.1016/j.jhydrol.2014.09.084.

D. von Gunten, T. Wöhling, C. Haslauer, D. Merchán, J. Causapé, O.A. Cirpka: Efficient calibration of a distributed pde-based hydrological model using grid coarsening. J. Hydrol. 519(D): 3290-3304, 2014, doi: 10.1016/j.jhydrol.2014.10.025.

G. Chiogna, M. Rolle, A. Bellin, O.A. Cirpka: Helicity and flow topology in three-dimensional anisotropic porous media. Advances Water Resour. 73: 134-143, 2014, doi:10.1016/j.advwatres.2014.06.017.

D. Lemke, R. González-Pinzón, Z. Liao, T. Wöhling, K. Osenbrück, R. Haggerty, O.A. Cirpka: Sorption and transformation of the reactive tracers resazurin and resorufin in natural river sediments. Hydrol. Earth Syst. Sci. 18:3151–3163, 2014, doi:10.5194/hess-18-3151-2014.

S.K. Ngueleu, P. Grathwohl, O.A. Cirpka: Particle-facilitated transport of lindane in water-saturated tropical lateritic porous media. J. Environ. Qual. 43(4): 1392-1403, 2014, doi: 10.2134/jeq2013.11.0454.

M. Schirmer, J. Luster, N. Linde, P. Perona, E.A.D. Mitchell, D.A. Barry, J. Hollender, O.A. Cirpka, P. Schneider, T. Vogt, D. Radny, and E. Durisch-Kaiser: Morphological, hydrological, biogeochemical and ecological changes and challenges in river restoration – the Thur River case study. Hydrol. Earth Syst. Sci. 18: 2449–2462, 2014, doi: 10.5194/hess-18-2449-2014.

B.M. Bajracharya, C. Lu, O.A. Cirpka: Modeling substrate-bacteria-grazer interactions coupled to substrate transport in groundwater. Water Resour. Res. 50(5): 4149–4162, 2014, doi: 10.1002/2013WR015173.

S.K. Ngueleu, P. Grathwohl, O.A. Cirpka: Altered transport of lindane caused by the retention of natural particles in saturated porous media. J. Contam. Hydrol. 162-163: 47-63, 2014, doi: 10.1016/j.jconhyd.2014.05.002.

C.M. Haberer, O.A. Cirpka, M. Rolle, P. Grathwohl: Experimental sensitivity analysis of oxygen transfer in the capillary fringe. Groundwater 52(1):37-49, 2014, doi:10.1111/gwat.12028.

R.L. Schwede, W. Li, C. Leven, and O.A. Cirpka: Three-dimensional geostatistical inversion of synthetic tomographic pumping and heat-tracer tests in a nested-cell setup. Advances Water Resour. 63(C): 77-90, 2014, doi:10.1016/j.advwatres.2013.11.004.

T. Vienken, E. Reboulet, C. Leven, M. Kreck, L. Zschornack, P. Dietrich: Field comparison of selected methods for vertical soil water content profiling, J. Hydrol. 501: 205-212, 2013, doi: 10.1016/j.jhydrol.2013.08.004.

R. Brauchler, G. Böhm, C. Leven, P. Dietrich, M. Sauter: A laboratory study of tracer tomography, Hydrogeol. J. 21(6): 1265-1274, 2013, doi: 10.1007/s10040-013-1006-z.

M. Morio, M. Finkel, S. Schädler: Applying a multi-criteria genetic algorithm framework for brownfield reuse optimization: Improving redevelopment options based on stakeholder preferences. J. Environ. Manag., 130, 331–346, 2013, doi: 10.1016/j.jenvman.2013.09.002.

S. Schädler, M. Finkel, A. Bleicher, M. Morio, M. Gross: Spatially explicit computation of sustainability indicator values for the automated assessment of land-use options. Landscape and Urban Planning, 111:34-45, 2013, doi: 10.1016/j.landurbplan.2012.12.002.

S. Diem, O.A. Cirpka, M. Schirmer: Modeling the dynamics of oxygen consumption upon riverbank filtration by a stochastic-convective approach. J. Hydrol. 505: 352-363, 2013, doi:10.1016/j.hydrol.2013.10.015.

A. Singh, C.M. Bürger, O.A. Cirpka: Optimized sustainable groundwater extraction management: general approach and application to the city of Lucknow, India. Water Resour. Manag. 27(12): 4349-4368, 2013, doi:10.1007/s11269-013-0415-z.

Z. Liao, D. Lemke, K. Osenbrück, O.A. Cirpka: Modeling and inverting reactive stream tracers undergoing two-site sorption and decay in the hyporheic zone. Water Resour. Res. 49(6): 3406–3422, 2013, doi: 10.1002/wrcr.20276.

D. Eckert, S. Qiu, M. Elsner, O.A. Cirpka: Model complexity needed for quantitative analysis of high resolution isotope and concentration data from a toluene-pulse experiment. Environ. Sci. Technol. 47(13): 6900-6907, 2013, doi: 10.1021/es304879d.

S. Qiu, D. Eckert, O.A. Cirpka, M. Huenniger, P. Knappett, P. Maloszewski, R. Meckenstock, C. Griebler, M. Elsner: Direct experimental evidence of non-first-order degradation kinetics and sorption-induced isotopic fractionation in a mesoscale aquifer: 13C/12C analysis of a transient toluene pulse. Environ. Sci. Technol. 47(13): 6892-6899, 2013, doi: 10.1021/es304877h.

D. Lemke, Z. Liao, T. Wöhling, K. Osenbrück, O.A. Cirpka: Concurrent conservative and reactive tracer tests in a stream undergoing hyporheic exchange. Water Resour. Res. 49(5): 3024-3037, 2013, doi: 10.1002/wrcr.20277.

K. Osenbrück, T. Wöhling, D. Lemke, N. Rohrbach, M. Schwientek, C. Leven, K.O. Doro, C. Callisto Alvarez, H. Taubald, O.A. Cirpka: Lateral hyporheic exchange fluxes at the Steinlach Test Site, Germany derived from hydraulic, chemical and isotopic monitoring. Environ. Earth Sci., 69(2): 359-372, 2013,doi: 10.1007/s12665-012-2155-4.

D. Lemke, P.-A. Schnegg, M. Schwientek, K. Osenbrück, O.A. Cirpka: On-line fluorometry of multiple reactive and conservative tracers in streams. Environ. Earth Sci., 69(2): 349-358, 2013, doi: 10.1007/s12665-013-2305-3.

K.O. Doro, C. Leven, O.A. Cirpka: Delineating subsurface heterogeneity at a river loop using geophysical and hydrogeological methods. Environ. Earth Sci., 69(2): 335-348, 2013, doi: 10.1007/s12665-013-2316-0.

P. Grathwohl, H. Rügner, T. Wöhling, K. Osenbrück, M. Schwientek, S. Gayler, U. Wollschläger, B. Selle, M. Pause, J.-O. Delfs, M. Grzeschik, U. Weller, M. Ivanov, O.A. Cirpka, U. Maier, B. Kuch, W. Nowak, V. Wulfmeyer, K. Warrach-Sagi, T. Streck, S. Attinger, L. Bilke, P. Dietrich, J.H. Fleckenstein, T. Kalbacher, P. Kolditz, K. Rink, L. Samaniego, H.-J. Vogel, U. Werban, G. Teutsch: Catchments as reactors - A comprehensive approach for water fluxes and solute turn-over. Environ Earth Sci., 69(2): 317-333, 2013, doi:10.1007/s12665-013-2281-7.

S. K. Ngueleu, P. Grathwohl, O.A. Cirpka: Effect of natural particles on the transport of lindane in saturated porous media: laboratory experiments and model-based analysis. J. Contam. Hydrol. 149: 13-26, 2013, doi: 10.1016/j.jconhyd.2013.02.009.

C. Schütze, T. Vienken, U. Werban, P. Dietrich, A. Finizola, C. Leven: Joint application of geophysical methods and direct push-soil gas surveys for the improved delineation of buried fault zones, J. Appl. Geophys. 82: 129-136, 2012, doi: 10.1016/j.jappgeo.2012.03.002.

C. Leven, P. Dietrich: Acupuncture for the ground? Direct push - tracking the subsurface with pinholes, Grundwasser, 17(1): 1, 2012, doi: 10.1007/s00767-011-0186-5.

D. Radny, C. Leven, J. Flachowsky, T. Scheytt, P. Dietrich: Application of direct push techniques for delineation of vertical variations in hydrochemistry at remediation sites-case study Elsterwerda (Brandenburg), Grundwasser 17(1): 7-17, 2012, doi: 10.1007/s00767-011-0184-7.

T. Vienken, C. Leven, P. Dietrich: Use of CPT and other direct push methods for (hydro-) stratigraphic aquifer characterization - a field study, Can. Geotech. J. 49(2): 197-206, 2012, doi: 10.1139/T11-094.

A.F. Orozco, A. Kemna, C. Oberdörster, L. Zschornack, C. Leven, P. Dietrich, H. Weiss: Delineation of subsurface hydrocarbon contamination at a former hydrogenation plant using spectral induced polarization imaging, J. Contam. Hydrol. 136: 131-144, 2012, doi: 10.1016/j.jconhyd.2012.06.001.

U.S. McKnight, M. Finkel: A system dynamics model for the screening-level long-term assessment of human health risks at contaminated sites. Environ. Mod. Software, 40: 35-50, 2012, doi: 10.1016/j.envsoft.2012.07.007.

S. Schädler, M. Morio, S. Bartke, M. Finkel: Integrated planning and spatial evaluation of megasite remediation and reuse options. J. Contam. Hydrol. 127, 88–100, 2012, doi: 10.1016/j.jconhyd.2011.03.003.

C.M. Haberer, M. Rolle, O.A. Cirpka, P. Grathwohl: Oxygen transfer in a fluctuating capillary fringe, Vadose Zone J. (11(3), 2012, doi:10.2136/vzj2011.0056.

D. Eckert, M. Rolle, O.A. Cirpka: Numerical simulation of isotope fractionation in bioreactive transport controlled by transverse mixing. J. Contam. Hydrol. 140-141: 95-106, 2012, doi:10.1016/j.jconhyd.2012.08.010.

L. Brevdo, O.A. Cirpka: Absolute/convective instability dichotomy in a Soret-driven convection induced in a porous layer by inclined thermal and vertical solutal gradients . Transport Porous Media. 95(2):425-446, 2012, doi:10.1007/s11242-012-0053-6.

O.A. Cirpka, M. Rolle, G. Chiogna, F.P.J. de Barros, W. Nowak: Stochastic evaluation of mixing-controlled steady-state plume lengths in two-dimensional heterogeneous domains. J. Contam. Hydrol. 138-139: 22-39, 2012, doi:10.1016/j.jconhyd.2012.05.007.

W. Zhang, E. Appel, X. Fang, C. Song, O.A. Cirpka: Magnetostratigraphy of deep drilling core SG-1 in the western Qaidam Basin (NE Tibetan Plateau) and its tectonic implications. Quaternary Res. 78(1): 139-148, 2012, doi:10.1016/j.yqres.2012.03.011.

R.L. Schwede, A. Ngo, P. Bastian, O. Ippisch, W. Li, O.A. Cirpka: Efficient parallelization of geostatistical inversion using the quasi-linear approach. Comput. Geosci. 44: 78-85, 2012, doi:10.1016/j.cageo.2012.03.014.

T. Vogt, M. Schirmer, O.A. Cirpka: Investigating riparian groundwater flow close to a losing river using diurnal temperature oscillations at high vertical resolution, Hydrol. Earth Syst. Sci. 16, 473–487, 2012, doi:10.5194/hess-16-473-2012.

D. Pollock, O.A. Cirpka: Fully coupled hydrogeophysical inversion of a laboratory salt tracer experiment monitored by Electrical Resistivity Tomography. Water Resour. Res. 48(1): W01505, 2012, doi:10.1029/2011WR010779.

C. Leven, H. Weiss, T. Vienken, P. Dietrich: Direct push technologies-an efficient investigation method for subsurface characterization, Grundwasser 16(4): 221-234, 2011, doi: 10.1007/s00767-011-0175-8.

A. Rein, S. Popp, S. Zacharias, C. Leven, M. Bittens, P. Dietrich: Comparison of approaches for the characterization of contamination at rural megasites, Environ. Earth Sci. 63(6): 1239-1249, 2011, doi: 10.1007/s12665-010-0797-7.

F.M. D’Affonseca, H. Prommer, M. Finkel, P. Blum, P. Grathwohl: Modeling of the long-term and transient evolution of biogeochemical and isotopic signatures in coal tar contaminated aquifers. Water Resour. Res. 47(5): W05518, 2011, doi:10.1029/2010WR009108.

S. Schädler, M. Morio, S. Bartke, R. Rohr-Zänker, M. Finkel: Designing sustainable and economically attractive brownfield revitalization options using an integrated assessment model. J. Environ. Manag. 92(3): 827-837, 2011, doi: 10.1016/j.jenvman.2010.10.026.

O.A. Cirpka, F.P.J. de Barros, G. Chiogna, W. Nowak: Probability density function of steady-state concentration in two-dimensional heterogeneous porous media, Water Resour. Res. 47(11): W11523, 2011, doi:10.1029/2011WR010750.

A. J. Pérez, R. Abrahão, J. Causapé, O.A. Cirpka, C. M. Bürger: Simulating the transition of a semi-arid catchment towards irrigation agriculture, J. Hydrol. 409(3-4): 663-681, 2011, doi:10.1016/j.jhydrol.2011.08.061.

P. Schneider, T. Vogt, M. Schirmer, J. A. Doetsch, N. Linde, N. Pasquale, P. Perona, O. A. Cirpka: Towards improved instrumentation for assessing river-groundwater interactions in a restored river corridor, Hydrol. Earth Syst. Sci. 15: 2531-2549, 2011, doi:10.5194/hess-15-2531-2011.

G. Chiogna, O.A. Cirpka, P. Grathwohl, M. Rolle: Relevance of local compound-specific transverse dispersion for conservative and reactive mixing in heterogeneous porous media, Water Resour. Res. 47(7): W07540, 2011, doi:10.1029/2010WR010270.

Z. Liao, O.A. Cirpka: Shape-free inference of hyporheic travel-time distributions from conservative and reactive tracer tests in streams, Water Resour. Res. 47(7): W07510, 2011, doi:10.1029/2010WR009927.

N. Molina-Giraldo, P. Bayer, P. Blum, O. A. Cirpka: Propagation of seasonal temperature signals into an aquifer upon bank filtration, Ground Water 49(4): 491-502, 2011, doi:10.1111/j.1745-6584.2010.00745.x.

O.A. Cirpka, F.P.J. de Barros, G. Chiogna, M. Rolle, W. Nowak: Stochastic flux-related analysis of transverse mixing in two-dimensional heterogeneous porous media, Water Resour. Res. 47(6): W06515, 2011, doi:10.1029/2010WR010279.

S. Schilling, M. Willecke, T. Aegerter-Wilmsen, O.A. Cirpka, K. Basler, C. von Mering: Cell-sorting at the A/P boundary in the Drosophila wing primordium: a computational model to consolidate observed non-local effects of Hh signaling, PLoS Comput. Biol. 7(4): e1002025, 2011, doi:10.1371/journal.pcbi.1002025.

C.M. Haberer, M. Rolle, S. Liu, O.A. Cirpka, P. Grathwohl: A high-resolution non-invasive approach to quantify oxygen transport across the capillary fringe and within the underlying groundwater, J. Contam. Hydrol. 122(1-4): 26-39, 2011, doi:10.1016/j.jconhyd.2010.10.006.

J. Luo, O.A. Cirpka: How well do mean breakthrough curves predict mixing-controlled reactive transport? Water Resour. Res. 47(2): W02520, 2011, doi:10.1029/2010WR009461.

G. Chiogna, O.A. Cirpka, P. Grathwohl, M. Rolle: Transverse mixing of conservative and reactive tracers in porous media: quantification through the concepts of flux-related and critical dilution indices, Water Resour. Res. 47(2): W02505, 2011, doi:10.1029/2010WR009608.

J. Dehnert, C. Leven, R. Trabitzsch, H. Weiss: Determination of high-resolution concentration profiles of nitrate in groundwater by means of direct push soundings, Grundwasser 15(4): 221-230, 2010, doi: 10.1007/s00767-010-0150-9.

S.C. Lessoff, U. Schneidewind, C. Leven, P. Blum, P. Dietrich, G. Dagan: Spatial characterization of the hydraulic conductivity using direct-push injection logging, Water Resour. Res. 46(12): W12502, 2010, doi: 10.1029/2009WR008949.

M. Morio, M. Finkel, E. Martac: Flow guided interpolation: A GIS-based method to represent contaminant concentration distributions in groundwater, Environ. Mod. Software, 2010, doi: 10.1016/j.envsoft.2010.05.018.

U.S. McKnight, S.G. Funder, J.J. Rasmussen, M. Finkel, P.J. Binning, P.L. Bjerg: An integrated model for assessing the risk of TCE groundwater contamination to human receptors and surface water ecosystems. Ecol. Eng. 36(9): 1126-1137, 2010, doi: 10.1016/j.ecoleng.2010.01.004.

T. Vogt, E. Hoehn, P. Schneider, A. Freund, M. Schirmer, O.A. Cirpka: Fluctuations of electrical conductivity as a natural tracer for bank filtration in a losing stream. Advances Water Resour. 33(11): 1296-1308, 2010, doi:10.1016/j.advwatres.2010.02.007.

O.A. Cirpka: Simplified simulation of steady-state bioreactive transport with kinetic solute uptake by the biomass, Water Resour. Res. 46(7): W07534, 2010, doi:10.1029/2009WR008977.

R.L. Schwede, O.A. Cirpka: Interpolation of steady-state concentration data by inverse modeling. Ground Water 48(4): 569-579, 2010, doi: 10.1111/j.1745-6584.2009.00668.x.

D. Pollock, O.A. Cirpka: Fully coupled hydrogeophysical inversion of synthetic salt tracer experiments. Water Resour. Res. 46(7): W07501, 2010, doi:10.1029/2009WR008575.

G. Chiogna, C. Eberhardt, P. Grathwohl, O.A. Cirpka, M. Rolle: Evidence of compound dependent hydrodynamic and (hydro)mechanical transverse dispersion by multi-tracer laboratory experiments. Environ. Sci. Technol. 44(2): 688-693, 2010, doi:10.1021/es9023964.

R.L. Schwede, O.A. Cirpka: Stochastic evaluation of mass fluxes from pointlike concentration measurements. J. Contam. Hydrol. 111(1-4): 36-47, 2010, doi:10.106/j.jconhyd.2009.10.011.

T. Vogt, P. Schneider, L. Hahn-Woernle, O.A. Cirpka: Estimation of seepage rates in a losing stream by fiber-optic high-resolution vertical temperature profiling. J. Hydrol. 380 (1-2): 154-164, 2010, doi:10.1016/j.jhydrol.2009.10.033.

L.C. Roberts, S.J. Hug, J. Dittmar, A. Voegelin, R. Kretzschmar, B. Wehrli, O.A. Cirpka, G.C. Saha, M.A. Ali, A.B.M. Badruzzaman: Arsenic mobilization from paddy soils during monsoon flooding. Nature Geoscience 3(1): 53 - 59, 2010, doi:10.1038/ngeo723.

R. Köber, G. Hornbruch, C. Leven, L. Tischer, J. Grossmann, P. Dietrich, H. Weiss, A. Dahmke: Evaluation of combined direct-push methods used for aquifer model generation, Ground Water 47(4): 536-546, 2009, doi: 10.1111/j.1745-6584.2009.00554.x.

M. Finkel, J.A.C. Barth, P. Grathwohl, D. Barceló, L. Charlet: Transfer of pollutants in soils, sediments and water systems: From small to large scale. J. Hydrol. 369(3-4): 223-224, 2009, doi: 10.1016/j.jhydrol.2009.03.001.

P. Bayer, M. Finkel, E. Duran, R. Baumann: Optimized groundwater drawdown in a subsiding urban mining area. J. Hydrol. (1-2): 95-104, 2009, doi: 10.1016/j.jhydrol.2008.11.028.

C. Aeppli, M. Berg, O.A. Cirpka, C. Holliger, R.P. Schwarzenbach, T.B. Hofstetter: Influence of Mass-Transfer Limitations on Carbon Isotope Fractionation During Microbial Dechlorination of Trichloroethene. Environ. Sci. Technol. 43(23): 8813–8820, 2009, doi:10.1021/es901481b.

M. Rolle, C. Eberhardt, G. Chiogna, O.A. Cirpka , P. Grathwohl: Enhancement of dilution and transverse reactive mixing in porous media: experiments and model-based interpretation. J. Contam. Hydrol. 110(3-4): 130-142, 2009, doi:10.1016/j.jconhyd.2009.10.003.

T. Vogt, E. Hoehn, P. Schneider, O.A. Cirpka: Untersuchung der Flusswasserinfiltration in voralpinen Schottern mittels Zeitreihenanalyse, Grundwasser 14(3): 179-194, 2009, doi:10.1007/s00767-009-0108-y.

O.A. Cirpka, A.J. Valocchi: Reply to Comments on "Two-dimensional concentration distribution for mixing-controlled bioreactive transport in steady state" by H. Shao et al. Advances Water Resour. 32(2): 298-301, 2009, doi:10.1016/j.advwatres.2008.10.018.

R.L. Schwede, O.A. Cirpka: Use of steady-state concentration measurements in geostatistical inversion. Advances Water Resour. 32(4): 607-619, 2009, doi:10.1016/j.advwatres.2009.01.010.

C. Mikutta, J.G. Wiederhold, O.A. Cirpka, T.B. Hofstetter, B. Bourdon, U. von Gunten: Iron isotope fractionation and atom exchange during sorption of ferrous iron to mineral surfaces. Geochim. Cosmochim. Acta 73(7): 1795-1812, 2009, doi:10.1016/j.gca.2009.01.014.

S. Hoffmann, T. Beilecke, U. Werban, C. Leven, B. Engeser, U. Polom: Joint application of shear wave seismics and direct push methods in the site investigation of an urban aquifer, Grundwasser 13(2): 78-90, 2008, doi: 10.1007/s00767-008-0067-8.

P. Bayer, C. M. Bürger, M. Finkel: Computationally efficient stochastic optimization using multiple realizations. Advances Water Resour. 31(2): 399-417, 2008, doi: 10.1016/j.advwatres.2007.09.004.

F. D'Affonseca, P. Blum, M. Finkel, R. Melzer, P. Grathwohl: Field scale characterization and modeling of contaminant release from a coal tar source zone. J. Contam. Hydrol. 102:, 120-139, 2008, doi: 10.1016/j.jconhyd.2008.03.011.

A. Neumann, T.B. Hofstetter, M. Lüssi, O.A. Cirpka, S. Petit, R.P. Schwarzenbach: Assessing the redox reactivity of structural Fe(II) in smectites from the reduction kinetics of nitroaromatic contaminants. Environ. Sci. Technol. 42(22): 8381-8387, 2008, doi:10.1021/es801840x.

D. Pollock, O.A. Cirpka: Temporal moments in geoelectrical monitoring of salt-tracer experiments. Water Resour. Res. 44(12): W12416, 2008, doi:10.1029/2008WR007014.

J. Luo, O.A. Cirpka: Travel-time based descriptions of transport and mixing in heterogeneous domains. Water Resour. Res. 44(9): W09407, 2008, doi:10.1029/2007WR006035.

R.L. Schwede, O.A. Cirpka, W. Nowak, I. Neuweiler: Impact of sampling volume on the probability density function of steady-state concentration. Water Resour. Res. 44(12): W12433, 2008, doi:10.1029/2007WR006668.

W. Nowak, R. Schwede, O.A. Cirpka, I. Neuweiler: Probability density functions of hydraulic head and velocity in three-dimensional heterogeneous porous media. Water Resour. Res. 44(8): W08452, 2008, doi:10.1029/2007WR006383.

O.A. Cirpka, R.L. Schwede, J. Luo, M. Dentz: Concentration statistics for mixing-controlled reactive transport in random heterogeneous media. J. Contam. Hydrol. 98(1-2): 61-74, 2008, doi:10.1016/j.jconhyd.2008.03.005.

S. Klump, O.A. Cirpka, H. Surbeck, R. Kipfer: Experimental and numerical studies on excess-air formation in quasi-saturated porous media. Water Resour. Res. 44(5): W05402, 2008, doi:10.1029/2007WR006280.

R.A. Payn, M.N. Gooseff, D.A. Benson, O.A. Cirpka, J.P. Zarnetske, W.B. Bowden, J.P. McNamara, J.H. Bradford: Comparison of instantaneous and constant-rate stream tracer experiments through non-parametric analysis of residence time distributions. Water Resour. Res. 44(6): W06404, 2008, doi:10.1029/2007WR006274.

W. Li, A. Englert, O.A. Cirpka, H. Vereecken: Three-dimensional geostatistical inversion of flowmeter and pumping-test data. Ground Water 46 (2): 193–201, 2008, doi:10.1111/j.1745-6584.2007.00419.x.

J. Luo, O.A. Cirpka, M. Dentz, J. Carrera: Temporal moments for transport with mass transfer described by an arbitrary memory function in heterogeneous media. Water Resour. Res. 44(1): W01502, 2008, doi:10.1029/2007WR006262.

C.M. Bürger, P. Bayer, M. Finkel: Algorithmic funnel-and-gate system design optimization. Water Resour. Res. 43(8): W08426, 2007, doi: 10.1029/2006WR005058.

P. Bayer, M. Finkel: Optimization of concentration control by evolution strategies: Formulation, application, and assessment of remedial solutions. Water Resour. Res. 43(2): W02410, 2007, doi: 10.1029/2005WR004753.

I. Kouznetsova, P. Bayer, M. Ebert, M. Finkel: Modelling the long-term performance of zero-valent iron using a spatio-temporal approach for iron aging. J. Contam. Hydrol. 90 (1-2), 58-80, 2007, doi: 10.1016/j.jconhyd.2006.09.014.

M. Finkel, P. Bayer, U.S. McKnight, F. Serapiglia, M. Kübert: Modelling tools for the selection and optimisation of contaminated land management strategies. Ital. J. Eng. Geol. Environ., Special Issue 1/2007, 2007, doi: 10.4408/IJEGE.2007-01.S-03.

J. Luo, M. Dentz, O.A. Cirpka, P.K. Kitanidis: Breakthrough curve tailing in a dipole flow field. Water Resour. Res. 43(9), W09403, 2007, doi: 10.1029/2006WR005600.

J. Luo, F.-A. Weber, O.A. Cirpka, W.-M. Wu, J. Carley, J. Nyman, P. Jardine, C.S. Criddle, P.K. Kitanidis: Modeling in-situ U(VI) bioreduction by sulfate-reducing bacteria in the presence of nitrate. J. Contam. Hydrol. 92(1-2): 129-148, 2007, doi:10.1016/j.jconhyd.2007.01.004.

W. Li, A. Englert, O.A. Cirpka, J. Vanderborght, H. Vereecken: 2-D characterization of hydraulic heterogeneity by multiple pumping tests. Water Resour. Res. 43(4): W04433, 2007, doi:10.1029/2006WR005333.

O.A. Cirpka, M.N. Fienen, M. Hofer, E. Hoehn, A. Tessarini, R. Kipfer, P.K. Kitanidis: Analyzing bank filtration by deconvoluting times series of electric conductivity, Ground Water 45(3): 318-328, 2007, doi:10.1111/j.1745-6584.2006.00293.x.

O.A. Cirpka, A.J. Valocchi: Two-dimensional concentration distribution for mixing-controlled bio-reactive transport in steady state. Advances Water Resour. 30(6-7): 1668-1679, 2007, doi:10.1016/j.advwatres.2006.05.022.

C. Leven, P. Dietrich: What information can we get from pumping tests? - comparing pumping test configurations using sensitivity coefficients, J. Hydrol. 319(1-4): 199-215, 2006, doi: 10.1016/j.jhydrol.2005.06.030.

M. Kübert, M. Finkel: Contaminant mass discharge estimation in groundwater based on multilevel point measurements: A numerical evaluation of expected errors. J. Contam. Hydrol. 84: 55-80, 2006, doi: 10.1016/j.jconhyd.2005.12.003.

P. Bayer, M. Finkel: Life cycle assessment of active and passive groundwater remediation technologies. J. Contam. Hydrol. 83: 171-199, 2006, doi: 10.1016/j.jconhyd.2005.11.005.

H. Rügner, M. Finkel, A. Kaschl, M. Bittens: Application of monitored natural attenuation in contaminated land management - A review and recommended approach for Europe. Environ.l Sci. Policy, 9(6): 568-576, 2006, doi: 10.1016/j.envsci.2006.06.001.

P. Bayer, M. Finkel: Hydraulic Performance of Conventional and Combined Pump-and-treat Systems under Non-uniform Background Flow. Ground Water 44(2): 234-243, 2006, doi: 10.1111/j.1745-6584.2005.00191.x.

C.J. Werth, O.A. Cirpka, P. Grathwohl: Enhanced mixing and reaction through flow focusing in heterogeneous porous media. Water Resour. Res. 42(12): W12414, 2006, doi:10.1029/2005WR004511.

E. Hoehn, O.A. Cirpka: Assessing hyporheic zone dynamics in two alluvial flood plains of the Southern Alps using water temperature and tracers. Hydrol. Earth Syst. Sci. 10: 553-563, 2006, doi:10.5194/hess-10-553-2006.

W. Nowak, O.A. Cirpka: Geostatistical inference of hydraulic conductivity and dispersivities from hydraulic heads and tracer data. Water Resour. Res. 42(8): W08416, 2006, doi:10.1029/2005WR004832.

G.H. de Rooij, O.A. Cirpka, F. Stagnitti, S.H. Vuurens, J. Boll: Quantifying minimum monolith size and solute dilution from multi-compartment percolation sampler data. Vadose Zone J. 5(4): 1086-1092, 2006, doi:10.2136/vzj2005.0101.

I. Benekos, O.A. Cirpka, P.K. Kitanidis: Experimental determination of transverse dispersivity in a helix and a cochlea. Water Resour. Res. 42 (7): W07406, 2006, doi:10.1029/2005WR004712.

J. Luo, O.A. Cirpka, P.K. Kitanidis. Temporal-moment matching for truncated breakthrough curves for step or step-pulse injection. Advances Water Resour. 29(9): 1306-1313, 2006, doi:10.1016/j.advwatres.2005.10.005.

W.-M. Wu, J. Carley, M. Fienen, T. Melhorn, K. Lowe, J. Nyman, J. Luo, M.E. Gentile, R. Rajan, D. Wagner, R.F. Hickey, B. Gu, D. Watson, O.A. Cirpka, P.K. Kitanidis, P.M. Jardine, C.S. Criddle: Pilot-scale in situ bioremediation of uranium in a highly contaminated aquifer. 1. Conditioning of a treatment zone. Environ. Sci. Technol. 40(12): 3978-3985, 2006, doi:10.1021/es051954y.

W.-M. Wu, J. Carley, T. Gentry, M.A. Ginder-Vogel, M. Fienen, T. Melhorn, H. Yan, S. Caroll, M.N. Pace, J. Nyman, J. Luo, M.E. Gentile, M.W. Fields, R.F. Hickey, B. Gu, D. Watson, O.A. Cirpka, J. Zhou, S. Fendorf, P.K. Kitanidis, P.M. Jardine, C.S. Criddle: Pilot-scale in situ bioremediation of uranium in a highly contaminated aquifer. 2. Reduction of U(VI) and geochemical control of U(VI) bioavailability. Environ. Sci. Technol. 40(12): 3986 - 3995, 2006, doi:10.1021/es051960u.

W. Li, O.A. Cirpka: Efficient geostatistical inverse methods for structured and unstructured grids. Water Resour. Res. 42(6): W06402, 2006, doi:10.1029/2005WR004668.

O.A. Cirpka, Å. Olsson, Q. Ju, M.A. Rahman, P. Grathwohl: Determination of transverse dispersion coefficients from reactive plume lengths. Ground Water 44(2): 212-221, 2006, doi:10.1111/j.1745-6584.2005.00124.x.

J. Luo, W-M. Wu, M.N. Fienen, P.M. Jardine, T.L. Mehlhorn, D.B. Watson, O.A. Cirpka, C.S. Criddle, P.K. Kitanidis: A nested-cell approach for in situ remediation. Ground Water 44(2): 266-274, 2006, doi:10.1111/j.1745-6584.2005.00106.x.

G. Janssen, O.A. Cirpka, S.E.A.T.M. van der Zee: Stochastic analysis of nonlinear biodegradation in regimes controlled by both chromatographic and dispersive mixing. Water Resour. Res. 42(1): W01417, 2006, doi:10.1029/2005WR004042.

S. Klump, R. Kipfer, O.A. Cirpka, C.F. Harvey, M.S. Brennwald, K.N. Ashfaque, A.B.M. Badruzzaman, S.J. Hug, D. Imboden: Groundwater dynamics and arsenic mobilization in Bangladesh assessed using noble gases and tritium. Environ. Sci. Technol. 40(1): 243-250, 2006, doi:10.1021/es051284w.

J. Luo, O.A. Cirpka, M.N. Fienen, W. Wu, T.L. Mehlhorn, J. Carley, P.M. Jardine, C.S. Criddle, P.K. Kitanidis: A parametric transfer function methodology for analyzing reactive transport in nonuniform flow. J. Contam. Hydrol. 83(1-2): 27-41, 2006, doi:10.1016/j.jconhyd.2005.11.001.

P. Bayer, M. Finkel, G. Teutsch: Cost-optimal contaminant plume management with a combination of pump-and-treat and physical barrier systems. Ground Water Monit. Rem. 25(2): 96-106, 2005, doi: 10.1111/j.1745-6592.2005.0022.x.

P. Bayer, M. Finkel: Modeling of sequential groundwater treatment with zero valent iron and granular activated carbon. J. Contam. Hydrol. 78: 129-146, 2005, doi: 10.1016/j.jconhyd.2005.03.005.

P. Bayer, E. Heuer, U. Karl, M. Finkel: Economical and ecological comparison of granular activated carbon (GAC) adsorber refill strategies. Water Res. 39: 1719-1728, 2005, doi: 10.1016/j.watres.2005.02.005.

J. Luo, O.A. Cirpka, W. Wu, M.N. Fienen, P.M. Jardine, T.L. Mehlhorn, D.B. Watson, C.S. Criddle, P.K. Kitanidis: Mass-transfer limitation for nitrate removal in a uranium-contaminated aquifer at Oak Ridge, TN. Environ. Sci. Technol. 39(21): 8453-8459, 2005, doi:10.1021/es050195g.

M.A. Rahman, S.C. Jose, W. Nowak, O.A. Cirpka: Experiments on Vertical Transverse Mixing in a Large-Scale Heterogeneous Model Aquifer. J. Contam. Hydrol. 80(3-4): 130-148, 2005, doi:10.1016/j.jconhyd.2005.06.010.

N. Teutsch, U. von Gunten, D. Porcelli, O.A. Cirpka, A.N. Halliday: Adsorption as a cause for iron isotope fractionation in reduced groundwater, Geochim. Cosmochim. Acta 69(17): 4175-4185, 2005, doi:10.1016/j.gca.2005.04.007.

W. Li, W. Nowak, O.A. Cirpka: Geostatistical inverse modeling of transient pumping tests using temporal moments of drawdown. Water Resour. Res. 41(8): W08403, 2005, doi:10.1029/2004WR003874.

O.A. Cirpka: Effects of sorption on transverse mixing in transient flows. J. Contam. Hydrol. 78(3): 207-229, 2005, doi:10.1016/j.jconhyd.2005.05.008.

I. Neuweiler, O.A. Cirpka: Homogenization of Richards equation in permeability fields with different connectivities. Water Resour. Res. 41(2): W02009, 2005, doi:10.1029/2004WR003329.

C. Leven, M. Sauter, G. Teutsch, P. Dietrich: Investigation of the effects of fractured porous media on hydraulic tests - an experimental study at laboratory scale using single well methods, J. Hydrol. 297(1-4): 95-108, 2004, doi: 10.1016/j.jhydrol.2004.04.004.

P. Bayer, M. Finkel, G. Teutsch: Kombinierte „Pump-and-treat“-Barrieren-Systeme, Teil I: Minimierung der Grundwasserentnahmerate durch hydraulische Zusatzmaßnahmen. Grundwasser 3(9): 173-180, 2004, doi: 10.1007/s00767-004-0043-x.

P. Bayer, M. Finkel, G. Teutsch: Kombinierte „Pump-and-treat“-Barrieren-Systeme, Teil II: Vergleichende Kostenanalyse. Grundwasser 3(9): 181-193, 2004, doi: 10.1007/s00767-004-0044-9.

P. Bayer, M. Finkel: Evolutionary algorithms for the optimization of advective control of contaminated aquifer zones. Water Resour. Res. 40(5): W06506, 2004, doi: 10.1029/2003WR002675.

P. Bayer, M. Finkel, G. Teutsch: Combining pump-and-treat and physical barriers for contaminant plume control. Ground Water 42(6), 2004, 856-867, doi: 10.1111/j.1745-6584.2004.t01-4-.x.

S.C. Jose, M.A. Rahman, O.A. Cirpka: Large-scale sandbox experiment on longitudinal effective dispersion in heterogeneous porous media. Water Resour. Res. 40(12): W12415, 2004, doi:10.1029/2004WR003363.

O.A. Cirpka, C.M. Bürger, W. Nowak, M. Finkel: Uncertainty and data worth analysis for the hydraulic design of funnel-and-gate systems in heterogeneous aquifers. Water Resour. Res. 40(11): W11502, 2004, doi:10.1029/2004WR003352.

W. Nowak, O.A. Cirpka: A modified Levenberg-Marquardt algorithm for quasi-linear geostatistical inversing. Advances Water Resour. 27(7): 737-750, 2004, doi:10.1016/j.advwatres.2004.03.004.

S.C. Jose, O.A. Cirpka: Measurement of mixing-controlled reactive transport in homogeneous porous media and its prediction from conservative tracer test data. Environ. Sci. Technol. 38(7):2089-2096, 2004, doi:10.1021/es034586b.

O.A. Cirpka, W. Nowak: First-order variance of travel time in non-stationary formations. Water Resour. Res. 40(3):W03507, 2004, doi:10.1029/2003WR002851.

C. Bürger, M. Finkel, G. Teutsch: Reaktionswandsysteme und "Pump-and-Treat" - Ein Kostenvergleich. Grundwasser, 8(3): 169-180, 2003, doi: 10.1007/s00767-003-0177-2.

O.A. Cirpka, S. Attinger: Effective dispersion in heterogeneous media under random transient flow conditions. Water Resour. Res. 39(9):1257, 2003, doi:10.1029/2002WR001931.

O.A. Cirpka, W. Nowak: Dispersion on kriged hydraulic conductivity fields. Water Resour. Res. 39(2):1027, 2003, doi:10.1029/2001WR000598.

W. Nowak, S. Tenkleve, O.A. Cirpka: Efficient computation of linearized cross-covariance and auto-covariance matrices of interdependent quantities. Math. Geol. 35(1):53-66, 2003, doi:10.1023/A:1022365112368.

O.A. Cirpka: Choice of dispersion coefficients in reactive transport calculations on smoothed fields. J. Contam. Hydrol. 58(3-4):261-282, 2002, doi:10.1016/S0169-7722(02)00039-6.

O.A. Cirpka, P.K. Kitanidis: Numerical evaluation of solute dispersion and dilution in unsaturated heterogeneous media. Water Resour. Res. 38(11):1220, 2002, doi:10.1029/2001WR001262.

G. Teutsch, H. Rügner, D. Zamfirescu, M. Finkel, M. Bittens: Source remediation vs. plume management: critical factors affecting the cost-efficiency. Land Contam. Reclam. 9(1): 1-12, 2001, link.

O.A. Cirpka, P.K. Kitanidis: Travel-time based model of bioremediation using circulation wells. Ground Water 39(3):422-432, 2001, doi:10.1111/j.1745-6584.2001.tb02326.x.

O.A. Cirpka, P.K. Kitanidis: Transport of volatile compounds in porous media in the presence of a trapped gas phase. J. Contam. Hydrol. 49(3-4):263-285, 2001, doi:10.1016/S0169-7722(00)00196-0.

O.A. Cirpka, P.K. Kitanidis: Theoretical basis for the measurement of local transverse dispersion in isotropic porous media. Water Resour. Res. 37(2):243-252, 2001, doi:10.1029/2000WR900314.

O.A. Cirpka, P.K. Kitanidis: Sensitivities of temporal moments calculated by the adjoint-state method and joint inversing of head and tracer data. Advances Water Resour. 24(1):89-103, 2000, doi:10.1016/S0309-1708(00)00007-5.

O.A. Cirpka, P.K. Kitanidis: Characterization of mixing and dilution in heterogeneous aquifers by means of local temporal moments. Water Resour. Res. 36(5): 1221-1236, 2000, doi:10.1029/1999WR900354.

O.A. Cirpka, P.K. Kitanidis: An advective-dispersive streamtube approach for the transfer of conservative tracer data to reactive transport. Water Resour. Res. 36(5): 1209-1220, 2000, doi:10.1029/1999WR900355.

O.A. Cirpka, P.K. Kitanidis: Impact of biomass-decay terms on the simulation of pulsed bioremediation. Ground Water 38(2): 254-263, 2000, doi:10.1111/j.1745-6584.2000.tb00337.x.

O.A. Cirpka, C. Windfuhr, G. Bisch, S. Granzow, H. Scholz-Muramatsu, H. Kobus: Microbial reductive dechlorination in large-scale sandbox model. J. Environ. Eng. ASCE 125(9): 861-870, 1999, doi:10.1061/(ASCE)0733-9372(1999)125:9(861).

O.A. Cirpka, E.O. Frind, R. Helmig: Numerical simulation of biodegradation controlled by transverse mixing. J. Contam. Hydrol. 40(2): 159-182, 1999, doi:10.1016/S0169-7722(99)00044-3.

O.A. Cirpka, R. Helmig, E.O. Frind: Numerical methods for reactive transport on rectangular and streamline-oriented grids. Advances Water Resour. 22(7): 711-728, 1999, doi:10.1016/S0309-1708(98)00051-7.

O.A. Cirpka, R. Helmig, E.O. Frind: Streamline-oriented grid-generation for transport modelling in two-dimensional domains including wells. Advances Water Resour. 22(7): 697-710, 1999, doi:10.1016/S0309-1708(98)00050-5.

M. Finkel, R. Liedl, G. Teutsch: Modelling surfactant-enhanced remediation of Polycyclic Aromatic Hydrocarbons. Environ. Mod. Software 14: 203-211, 1999, doi: 10.1016/S1364-8152(98)00071-1.

M. Finkel, R. Liedl, G. Teutsch: Modelling surfactant influenced PAH migration. Phys. Chem. Earth 23(2): 245-250, 1998: doi: 10.1016/S0079-1946(98)00020-2.

O. Cirpka, P. Reichert, O. Wanner, S.R. Müller, R.P. Schwarzenbach: Gas exchange at river cascades: Field experiments and model calculations. Environ. Sci. Tech. 27(10):2086-2097, 1993, doi:10.1021/es00047a014.

Schäfer, W., M. Finkel, Kinzelbach, W.: Modeling of an In-Situ Remediation Using Denitrifying Bacteria. Mitteilungen der Deutschen Bodenkundlichen Gesellschaft, 60, 407-412, 1990.

O.A. Cirpka: Intrinsic remediation in natural gradient systems. In: P.K. Kitanidis, P.L. McCarty (eds.): Delivery and mixing in the subsurface: processes and design principles for in situ remediation, SERDP ESTCP Remediation Technology, vol. 4, Springer, New York. pp 217-238, 2012, doi:10.1007/978-1-4614-2239-6_9.

M. Finkel, J. Barth, P. Grathwohl: Advanced Tools and Models to Improve River Basin Management in Europe in the Context of Climate Change - AquaTerra. IWA Publishing London, 128 p. ISBN: 9781843393726, 2010.

H. Burmeier, V. Birke, M. Ebert, M. Finkel, D. Rosenau, H. Schad: Anwendung von Reinigungswänden zur Sanierung von Altlasten. Handlungs-Leitfaden, BMBF Nr. 0271241, 471 S, 2006.

M. Finkel, R. Liedl, G. Teutsch: Modelling Reactive Transport of Organic Solutes in Groundwater With a Lagrangian Streamtube Approach. - In: H. Schulz & G. Teutsch (Hrsg.): Geochemical Processes - Concepts for Modelling Reactive Transport in Soils and Groundwater, DFG Research Report, Wiley-VCH, Weinheim, 115-134, 2002.

O. Cirpka: Numerische Methoden zur Simulation des reaktiven Mehrkomponententransports im Grundwasser. Mitteilungen des Instituts für Wasserbau der Universität Stuttgart 95, zugl. Dissertation Fakultät für Bauingenieurwesen der Universität Stuttgart, Eigenverlag des Instituts für Wasserbau der Unversität, Pfaffenwaldring 61, Stuttgart, 1997. (9.47MB)

O. Cirpka: Strömungs- und Transporteigenschaften des Untergrundes und ihre Bedeutung für den mikrobiellen Schadstoffabbau. In: C. Knorr & T.v.Schell (eds.): Mikrobieller Schadstoffabbau. Vieweg Verlag, Braunschweig. pp 34-78, 1997.

O. Cirpka: CONTRACT: A Numerical Tool for Contaminant Transport and Chemical Transformations - Theory and Program Documentation. Mitteilungen des Instituts für Wasserbau der Universität Stuttgart 87, Eigenverlag des Instituts für Wasserbau der Unversität, Pfaffenwaldring 61, Stuttgart, 1996. (2.54MB)

H. Kobus, O. Cirpka, B. Barczewski, H.-P. Koschitzky: Versuchseinrichtung zur Grundwasser- und Altlastensanierung VEGAS, Konzeption und Programmrahmen. Mitteilungen des Instituts für Wasserbau der Universität Stuttgart 82. Eigenverlag des Instituts für Wasserbau der Universität Stuttgart, Pfaffenwaldring 61, Stuttgart, 1993.