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Auken, E., Christiansen, A. V., Westergaard, J. H., Kirkegaard, C., Fopged, N., Viezzoli, A. (2009), An integrated processing scheme for high-resolution airborne electromagnetic surveys, the SkyTEM system: Exploration Geophysics, 40, 184-192. Paper (pdf 2 Mb.)

Auken, E., Christiansen, A. V., Jacobsen, L., and Sørensen, K. I., 2008, A resolution study of buried valleys using laterally constrained inversion of TEM data: Journal of Applied Geophysics, 2008, 10-20. Paper (pdf - 4 Mb.)

Auken, E., Pellerin, L., Christensen, N. B., and Sørensen, K. I., 2006, A survey of current trends in near-surface electrical and electromagnetic methods: Geophysics, 71, G249-G260.
Paper (pdf - 1 Mb).

Auken, E., Christiansen, A. V., Jacobsen, B. H., Foged, N., and Sørensen, K. I., 2005, Piecewise 1D Laterally Constrained Inversion of resistivity data: Geophysical Prospecting, 53, 497-506. Paper (pdf - 1 Mb).

Auken, E. and Christiansen, A. V., 2004, Layered and laterally constrained 2D inversion of resistivity data: Geophysics, 69, 752-761. Paper (pdf - 0.5 Mb).

Auken, E., Jørgensen, F., and Sørensen, K. I., 2003, Large-scale TEM investigation for groundwater: Exploration Geophysics, 33, 188-194. Paper (pdf - 2.9 Mb).

Auken, E., Nebel, L., Sørensen, K. I., Breiner, M., Pellerin, L., and Christensen, N. B., 2002, EMMA - A Geophysical Training and Education Tool for Electromagnetic Modeling and Analysis: Journal of Environmental & Engineering Geophysics, 7, 57-68. Paper (pdf - 5.7 Mb).

B
Baumgartner, F. and Christensen, N. B., 1998, Analysis and application of a non-conventional underwater geoelectrical method in Lake Geneva, Switzerland: Geophysics, 46, 527-541.

C
Christiansen AV, Auken E and Viezzoli A, 2011, Quantification of modeling errors in airborne TEM caused by inaccurate system description. Geophysics 76(1), F43-F52. Paper (pdf 2 Mb).

Christiansen, A. V., Auken, E., Foged, N., and Sørensen, K. I., 2007, Mutually and laterally constrained inversion of CVES and TEM data - A case study: Near Surface Geophysics, 5, 115-124. Paper (pdf - 3.3 Mb).

Christiansen, A. V. and 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. Paper (pdf - 0.9 Mb).

Christensen, N. B, 2002, A generic 1-D imaging method for transient electromagnetic data: Geophysics, 67, 438-447.

Christensen, N. B. and Sørensen, K., 2001, Pulled array continuous electrical sounding with an additional inductive source: an experimental design study: Geophysical Prospecting, 49, 241-254.

Christensen, N. B., 2000, Difficulties in determining electrical anisotropy in subsurface investigations: Geophysical Prospecting, 48, 1-19.

Christensen, N. B. and Sørensen, K. I., 1998, Surface and borehole electric and electromagnetic methods for hydrogeological investigations:
European journal of environmental and engineering geophysics, 3, 75-90.

Christensen, N. B., 1997, Electromagnetic subsurface imaging. A case for adaptive Born approximation: Surveys in Geophysics, 18, 477-510.

Christensen, N. B., 1996, Imaging of Transient Electromagnetic Soundings Using a Scaling Approximate Fréchet Derivative: Lecture Notes in Earth Sciences, 63, 205-214.

Christensen, N. B., 1995, Imaging of central loop transient electromagnetic soundings: Journal of environmental & engineering geophysics, 53-66.

Christensen, N. B., 1990, Optimized fast Hankel transform filters: Geophysical Prospecting, 38, 545-568.

Christensen, N. B., 1987, The AC-geoelectrical sounding method: a combined electric/electromagnetic prospecting tool: BOREAS, 387-392.

Christiansen, A. V and Auken, E., 2003, Layered 2-D inversion of profile oriented data - evaluated using stochastic models: Reviewed Proceedings, 3DEM3, Austalia 2003. Paper (pdf - 0.5 Mb).

Christiansen, A. V. and Christensen, N. B., 2003, A quantitative appraisal of airborne and ground-based transient electromagnetic (TEM) measurements in Denmark: Geophysics, 68 (2), 523-534. Paper (pdf - 0.7 Mb).

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D
Dahlin, T. and Zhou, B., 2004, A numerical comparison of 2D resistivity imaging with 10 electrode arrays: Geophysical Prospecting, 52, 379-398. Paper (pdf - 8.3 Mb).

Dam, D., Christensen, N. B., and Sørensen, K. I., 1996, Inversion of Transient Hydraulic Head Variation Caused by a Controlled Point Source: Lecture Notes in Earth Sciences, Inverse methods - Interdisciplinary Elements of Methodology, Computation and Application.

Danielsen, J. E., Dahlin, T., Owen, R., Mangeya, P., and Auken, E., 2007, Geophysical and hydrogeologic investigation of groundwater in the Karoo stratigraphic sequence at Sawmills in northern Matabeleland, Zimbabwe: a case history: Hydrogeology Journal, 15, 945-960. Paper (pdf - 0.8 Mb.)

Danielsen, J. E., Auken, E., Jørgensen, F., Søndergaard, V. H., and Sørensen, K. I., 2003, The application of the transient electromagnetic method in hydrogeophysical surveys: Journal of Applied Geophysics, 53, 181-198. Paper (pdf - 2 Mb.)

d'Ozouville, N., Auken, E., Sørensen, K. I., Violette, S., Marsily, G. d., Deffontaines, B., and Merlen, G., 2008, Extensive perched aquifer and structural implications revealed by 3D resistivity mapping in a Galapagos volcano: Earth and Planetary Science Letters, 2008, 518-522. Paper (pdf - 2 Mb.)

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E
Effersø, F., Auken, E., and Sørensen, K. I., 1999, Inversion of band-limited TEM responses: Geophysical Prospecting, 47, 551-564.

J
Johansen, H. K. and Sørensen, K. I., 1979, Fast Hankel transforms: Geophysical Prospecting, 27, 876-901. Paper (pdf - 1 Mb).

Jørgensen, F., Sandersen, P., Auken, E., Lykke-Andersen, H., and Sørensen, K. I. Large-scale TEM survey of Mors, Denmark. Kirsch, R. Groundwater Geophysics. A tool for hydrogeology. 1[12.3], 363-380. 2006. Springer.

Jørgensen, F., Sandersen, P., Auken, E., Lykke-Andersen, H., and Sørensen, K. I., 2005, Contributions to the geological mapping of Mors, Denmark - A study based on a large-scale TEM survey: Bulletin of the Geological Society of Denmark, DGF, 52, 53-75.
Paper (pdf - 1 Mb)

Jørgensen, F., Lykke-Andersen, H., Sandersen, P., Auken, E., and Nørmark, E., 2003, Geophysical investigations of buried Quaternary valleys in Denmark: an integrated application of transient electromagnetic soundings, reflection seismic surveys and exploratory drillings: Journal of Applied Geophysics, 53, 215-228. Paper (pdf - 12 Mb.)

Jørgensen, F., Sandersen, P., and Auken, E., 2003, Imaging buried Quaternary valleys using the transient electromagnetic method: Journal of Applied Geophysics, 53, 199-213.
Paper (pdf - 2 Mb.)

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L

Ley Cooper, Macnae, J., Viezzoli, A., 2010: Breaks in lithology: Interpretation problems when handling 2D structures with a 1D approximation. Geophysics, 75, 179-188. Paper (pdf - 2Mb)

M
Mansoor, N., Slater, L., Artigas, F., and Auken, E., 2006, High-resolution geophysical characterization of shallow-water wetlands: Geophysics, 71, B101-B109.
Paper (pdf - 2.2 Mb).

Møller, I. and Sørensen, K. I., 1998, Improved Near-Surface Geological Mapping and Interpretation: European journal of environmental and engineering geophysics, 2, 247-261.

Munkholm, M. S. and Auken, E., 1996, Electromagnetic noise contamination on transient electromagnetic soundings in culturally disturbed environments: Journal of environmental & engineering geophysics, 1, 119-127.

Munkholm, M. S., 1997, Motion-induced noise from vibration of a moving TEM detector coil: characterization and suppression: Journal of Applied Geophysics, 37, 21-29.
Paper (pdf - 0.3 Mb).

Møller, I., Jacobsen, B. H., and Christensen, N. B., 2001, Rapid inversion of 2-D geoelectrical data by multichannel deconvolution: Geophysics, 66, 800-808. Abstract.

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O
Olsen, H., Ploug, C., and Sørensen, K. I., 1993, Reservoir Characterization applying High Resolution Seismic Profiling. Rabis Creek, Denmark: Ground Water, 31, 84-90. Abstract.

P
Paasche, H., Tronicke, J., Maurer, H., Green, A., Auken, E., and Stauffer, F., 2007, Geophysical surveying an active well catchment in the presence of significant topography and anthropogenic disturbances: Near Surface Geophysics, 5, 307-317.

Poulsen, L. H. and Christensen, N. B., 1999, Hydrogeophysical mapping with the transient electromagnetic sounding method: European journal of environmental and engineering geophysics, 3, 201-220.

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S
Sandersen, P. and Jørgensen, F., 2003, Buried Quaternary valleys in western Denmark--occurrence and inferred implications for groundwater resources and vulnerability: Journal of Applied Geophysics, 53, 229-248.

Sørensen, K. I., Auken, E., Christensen, N. B., and Pellerin, L. An Integrated Approach for Hydrogeophysical Investigations. New Technologies and a Case History. Near-surface Geophysics Part II. 585-603. SEG 2005. Paper (pdf - 6 Mb)

Sørensen, K. I. and Auken, E., 2004, SkyTEM - A new high-resolution helicopter transient electromagnetic system: Exploration Geophysics, 35, 191-199. Paper (pdf - 0.7 Mb)

Sørensen, K. I., Effersø, F., Auken, E., and Pellerin, L., 2002, A method to estimate hydraulic conductivity while drilling: Journal of Hydrology, 260, 15-29.

Sørensen, K., Effersø, F., and Auken, E., 2001, A hydrogeophysical Investigation of the Island of Drejø: European journal of environmental and engineering geophysics, 6, 109-124.

Sørensen, K. I. and Larsen, F., 1998, Ellog Auger Drilling -"3-in-one" Method for Hydrogeological Data Collection: Ground Water Monitoring & Remediation.

Sørensen, K., 1996, Pulled Array Continuous Electrical Profiling:
First break, 14, 85-90.

Sørensen, K. I. and Christensen, N. B., 1994, The fields from a finite electrical dipole - A new computational approach: Geophysics, 59, 864-880.

Sørensen, K. I., 1989, A method for measurement of the electrical formation resistivity while auger drilling: First break, 7, 403-407.

Sørensen, K. I. and Børsting-Pedersen, L., 1977, Solution of the H-polarization induction problem by wavenumber integral equation approach: Geophys.J.R.astr.Soc., 48, 493-508.

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T
Thomsen, R., Søndergaard, V. H., and Sørensen, K. I., 2004, Hydrogeological mapping as a basis for establishing site-specific groundwater protection zones in Denmark: Hydrogeology, 12, 550-562.

V

Viezzoli, A., A. V. Christiansen, E. Auken, and K. Sørensen (2008), Quasi-3D modeling of airborne TEM data by spatially constrained inversion, Geophysics, 73, F105-F113. Paper (pfd - 2 Mb.)

Viezzoli, A., Auken, E., Munday, T. (2009) Spatially constrained inversion for quasi 3D modelling of airborne electromagnetic data - an application for environmental assessment in the Lower Murray Region of South Australia, Exploration Geophysics, 40, 173-183. Paper (pdf- 2 Mb.)

Viezzoli, A.,Tosi, L., Teatini, P., Silvestri, S. (2010) Surface water-groundwater exchange in transitional coastal environments by airborne electromagnetics: The Venice lagoon example, Geophysical Research Letters, 37, L0142. Paper (pdf -1 Mb)

W
Wiederhold, H., Rumpel, H., Auken, E., Siemon, B., Scheer, W., and Kirsch, R., 2008, Geophysikalische Verfahren zur Erkundung und Charakterisierung von Grundwasserleitern in quartären Rinnen: Grundwasser, 2008, 68-77. Paper (pdf - 4 Mb.)

Wisén, R. and Christiansen, A. V., 2005, Laterally and Mutually Constrained Inversion of Surface Wave Seismic Data and Resistivity Data: Journal of Environmental & Engineering Geophysics, 10, 251-262. Paper (pdf - 16 Mb).

Wisén, R., Auken, E., and Dahlin, T., 2005, Combination of 1D laterally constrained inversion and 2D smooth inversion of resistivity data with a priori data from boreholes: Near Surface Geophysics, 3, 71-79. Paper (pdf - 4 Mb).

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