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Department of Geoscience

Publications from Department of Geoscience

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Christensen, N. B. (2014). Sensitivity functions of transient electromagnetic methods. Geophysics, 79(4), E167-E182. https://doi.org/10.1190/GEO2013-0364.1

Christensen, N. B. & Halkjær, M. (2014). Mapping pollution and coastal hydrogeology with helicopterborne transient electromagnetic measurements. Exploration Geophysics, 45(4), 243-254. https://doi.org/10.1071/EG13071

Christensen, N. B. & Lawrie, K. (2014). Response to comments by Adam Smiarowski and Shane Mulè on: Christensen, N., and Lawrie, K., 2012. Resolution analyses for selecting an appropriate airborne electromagnetic (AEM) system. Exploration Geophysics, 43, 213-227. https://doi.org/10.1071/EG14015

Christensen, N. K., Christensen, S. & Ferre, T. (2014). Integrating geophysics and hydrology for reducing the uncertainty of groundwater model predictions and improved prediction performance. Abstract from AGU Fall Meeting, San Francisco, United States.

Christensen, N. K., Christensen, S. & Ferre, T. (2014). Testing how geophysics can reduce the uncertainty of groundwater model predictions. Geophysical Research Abstracts, 16, Article EGU2014-9602. http://meetingorganizer.copernicus.org/EGU2014/EGU2014-9602.pdf

Christensen, L. & Friedrich, W. L. (1973). Stenenes kædedans - ringe-netværk og striber - i marken. Varv, (4), 99-106.

Christensen, N. K., Christensen, S. & Ferre, T. (2016). Testing alternative uses of electromagnetic data to reduce the prediction error of groundwater models. Hydrology and Earth System Sciences, 20(5), 1925-1946. https://doi.org/10.5194/hess-20-1925-2016

Christensen, N. K., Ferre, T., Fiandaca, G. & Christensen, S. (2017). Voxel inversion of airborne electromagnetic data for improved groundwater model construction and prediction accuracy. Hydrology and Earth System Sciences, 21(2), 1321-1337. https://doi.org/10.5194/hess-21-1321-2017

Christensen, N. B. (2016). Fast approximate 1D modelling and inversion of transient electromagnetic data. Geophysical Prospecting, 64(6), 1620-1631. https://doi.org/10.1111/1365-2478.12373

Christensen, N. B. (2016). Strictly horizontal lateral parameter correlation for 1D inverse modelling of large data sets. Near Surface Geophysics, 14(5), 403-411 . https://doi.org/10.3997/1873-0604.2016028

Christensen, N. K., Minsley, B. J. & Christensen, S. (2017). Generation of 3-D hydrostratigraphic zones from dense airborne electromagnetic data to assess groundwater model prediction error. Water Resources Research, 53(2), 1019-1038. https://doi.org/10.1002/2016WR019141

Christensen, S. (2017). Methods to correct and compute confidence and prediction intervals of models neglecting sub-parameterization heterogeneity – From the ideal toward practice. Advances in Water Resources, 100(Februar), 109-125. https://doi.org/10.1016/j.advwatres.2016.12.007

Christensen, N. B. (2017). Deriving interpretation attributes from AEM surveys using the continuous wavelet transform. In 2nd European Airborne Electromagnetics Conference 2017, Held at Near Surface Geoscience Conference and Exhibition 2017 (pp. 101-105). European Association of Geoscientists and Engineers.

Christensen, N. B. (2018). Interpretation attributes derived from airborne electromagnetic inversion models using the continuous wavelet transform. Near Surface Geophysics, 16(6), 665-678. https://doi.org/10.1002/nsg.12018

Christensen, N. B. & C. Lawrie, K. (2017). A novel approach to comparing AEM inversion results with borehole conductivity logs. Exploration Geophysics, 49(3), 309-322. https://doi.org/10.1071/EG17029

Christensen, N. B. & Christiansen, A. V. (2021). Using geophysical survey results in the inference of aquifer vulnerability measures. Near Surface Geophysics, 19(5), 505-521. https://doi.org/10.1002/nsg.12171

Christensen, N. B. (2022). Joint inversion of airborne TEM data and surface geoelectrical data: The Egebjerg case. Journal of Applied Geophysics, 196(3), Article 104511. https://doi.org/10.1016/j.jappgeo.2021.104511

Christensen, N. B. (2022). Resolution attributes for geophysical inversion models: Depth of investigation and novel measures. Near Surface Geophysics, 20(1), 3-15. https://doi.org/10.1002/nsg.12188

Christensen, N. B. (2022). Pivotal moments: Seven scenes from a geophysics adventure: Scene 1. Preview, (216), 32-34. https://doi.org/10.1080/14432471.2022.2041319

Christensen, N. B. (2022). Pivotal moments: Seven scenes from a geophysics adventure: Scene 2. Preview, (217), 31-32. https://doi.org/10.1080/14432471.2022.2057086

Christensen, N. B. (2022). Pivotal moments: Seven scenes from a geophysics adventure: Scene 3. Preview, (218), 33-35. https://doi.org/10.1080/14432471.2022.2083801

Christensen, N. B. (2022). Pivotal moments: Seven scenes from a geophysics adventure: Scene 4. Preview, (219), 31-32. https://doi.org/10.1080/14432471.2022.2103990

Christensen, N. B. (2022). Pivotal moments: Seven scenes from a geophysics adventure: Scenes 5 & 6. Preview, (220), 30-32. https://doi.org/10.1080/14432471.2022.2127688

Christensen, N. B. (2022). Pivotal moments: Seven scenes from a geophysics adventure: Scene 7. Preview, (221), 34-37. https://doi.org/10.1080/14432471.2022.2149180

Christensen, S. (2024). Documentation of Edcrop – version 1: A Python package to simulate field-scale evapotranspiration and drainage from crop, wetland, or forest . AU Library Scholarly Publishing Services. https://doi.org/10.7146/aul.539

Christensen, N. B. & Jacobsen, B. H. (2025). A fast hybrid 1D inversion approach for ground conductivity data. Near Surface Geophysics, 23(1), 30-48. https://doi.org/10.1002/nsg.12327

Christensen, N. B., Christiansen, A. V. & Christensen, N. K. (2024). Mere sikre valg af nedsivningsområder. Vand & Jord, 31. årgang(December 2024), 144-149.

Christensen, N. B. (2025). Linear filter theory for the forward Laplace transform and its use in calculating 1D EM responses. Computers and Geosciences, 198, Article 105865. https://doi.org/10.1016/j.cageo.2025.105865

Christensen, N. K. (2016). Hydrological and geophysical test-bench modeling: Integrating geophysics, geology, and hydrology for improved predictive capability of groundwater models.

Christiansen, A. V. (2001). Rapport til Ringkjøbing Amt om tolkning af flybårne TEM data fra Ringkjøbing Amt.

Christiansen, A. V. (2001). Short note on the inversion of airborne TEM data from Albuquerque, New Mexico.

Christiansen, A. V. & Christensen, N. B. (2001). En sammenligning af flybåren og jordbaseret TEM. (pp. 471-480).

Christiansen, A. V. & Christensen, N. B. (2001). Quantitative interpretation and analysis of airborne transient electromagnetic data in Denmark. (pp. 0-0).

Christiansen, A. V., Auken, E., Sørensen, K. I. & Smith, J. T. (2002). 2-D Laterally Constrained inversion (LCI) of resistivity data. (pp. 0-0).

Christiansen, A. V., Auken, E., Sørensen, K. I. & Smith, T. (2002). 2-D Laterally Constrained Inversion (LCI) of resistivity data. (pp. 0-0).

Christiansen, A. V. & Christensen, N. B. (2002). A quantitative appraisal of airborne and ground-based transient electromagnetic (TEM) measurements in Denmark. Geophysics (online), 0-0.

Christiansen, A. V. & Christensen, N. B. (2002). Application and analysis of airborne transient electromagnetic methods in Denmark - The role of On-time data. (pp. 0-0).

Christiansen, A. V. & Christensen, N. B. (2003). A quantitative appraisal of airborne and ground-based transient electromagnetic (TEM) measurements in Denmark. Geophysics, 68, 523-534.

Christiansen, A. V. (2004). Integreret analyse af geofysiske data - morgendagens geofysik. Geologisk Tidskrift, 2004-2, 0-0.

Christiansen, A. V. & Auken, E. (2004). Optimizing a layered and laterally constrained 2D inversion of resistivity data using Broyden's update and 1D derivatives. Journal of Applied Geophysics, 56, 247-261.

Christiansen, A. V., Foged, N., Auken, E. & Sørensen, K. I. (2004). Integrated Inversion of CVES and TEM Data Using Lateral Constraints. (pp. 0-0). EAGE-NS.

Christiansen, A. V., Auken, E. & Jacobsen, L. (2005). Laterally Constrained 1D-Inversion of 3D TEM Data. In Proceedings of SAGEEP 2005, Atlanta, EEGS

Christiansen, A. V., Auken, E., Sørensen, K. I., Jørgensen, F. & Johnsen, R. (2005). GeoStatistical Estimation of Structural Vulnerability. Abstract from 11th meeting of Environmental and Engineering Geophysics, EAGE, Near Surface division, Palermo, Italy.

Christiansen, A. V., Auken, E., Sørensen, K. I., Jørgensen, F. & Johnsen, R. (2005). From resistivity to geophysical clay thickness: Workshop. Hydrogeophysics - A tool for sustainable use of groundwater ressources. Abstract from 11th meeting of environmental and engineering geophysics, EAGE, Near Surface division, Palermo, Italy.

Christiansen, A. V., Auken, E. & Jørgensen, F. (2005). Fysisk lertykkelse estimeret ved brug af geostatistiske metoder - præsentation af konceptet og en kortlægning. In ATV - Jord og grundvand (pp. 1-7)

Christiansen, A. V., Auken, E. & Sørensen, K. I. (2005). GeoStatistical Estimation of Structural Vulnerability - Modellen. Abstract from GFS, Aarhus Universitet, ERFA, geofysik, Denmark.

Christiansen, A. V., Auken, E. & Sørensen, K. I. (2005). GeoStatistical Estimation of Structural Vulnerability - SSV oversigt. Abstract from GFS, Aarhus Universitet, ERFA, geofysik.

Christiansen, A. V., Auken, E. & Sørensen, K. I. (2007). From resistivity to clay thickness - An inversion approach. In Ikke angivet EEGS.

Christiansen, A. V., Auken, E. & Sørensen, K. I. (2006). Geofysisk tolkning af SkyTEM målinger ved Give med anvendelse af nyudviklet tolkningsmetode til fladedækkende data. Geofysisk afdeling, Geologisk Institut, Aarhus Universitet.

Christiansen, A. V. & Westergaard, J. (2006). Geofysisk tolkning af SkyTEM målinger ved Stevnstrup med anvendelse af nyudviklet tolkningsmetode til fladedækkende data. Geologisk Institut, Aarhus Universitet.

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Revised 06.02.2024