Aarhus University Seal / Aarhus Universitets segl

N.B. Christensen

  1. 2018
  2. Published

    A novel approach to comparing AEM inversion results with borehole conductivity logs. / Christensen, Niels Bøie; C. Lawrie, Kenneth.

    In: Exploration Geophysics, Vol. 49, No. 3, 12.2018, p. 309-322.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  3. Published

    Interpretation attributes derived from airborne electromagnetic inversion models using the continuous wavelet transform. / Christensen, Niels Bøie.

    In: Near Surface Geophysics, Vol. 16, No. 6, 22.11.2018, p. 665-678.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  4. 2017
  5. Published

    An inter-disciplinary, multi-physics approach for rapid mapping and hydrogeological characterisation of neogene intra-plate fault systems in depositional landscapes. / Lawrie, Ken; Murray, Titus; Christensen, Niels B.; Brodie, Ross S.; Halas, Larysa; Gibson, David.

    30th Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP 2017) : Proceedings of a meeting held 19-23 March 2017, Denver, Colorado, USA. . Environmental and Engineering Geophysical Society ( EEGS ), 2017. (Proceedings of the Symposium on the Application of Geophyics to Engineering and Environmental Problems, SAGEEP).

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  6. Published

    Deriving interpretation attributes from AEM surveys using the continuous wavelet transform. / Christensen, N. B.

    2nd European Airborne Electromagnetics Conference 2017, Held at Near Surface Geoscience Conference and Exhibition 2017. European Association of Geoscientists and Engineers, 2017. p. 101-105.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  7. Published

    Groundwater exploration using AEM in structurally complex, inverted sedimentary basins and paleovalleys, kimberley regio. / Lawrie, K. C.; Symington, N.; Christensen, N. B.; Haber, E.; Marchant, D.; Murray, T.; Halas, L.; Tan, K. P.; Brodie, R. C.; Harris-Pascal, C.; Gow, L.; Neumann, N.

    2nd European Airborne Electromagnetics Conference 2017, Held at Near Surface Geoscience Conference and Exhibition 2017. European Association of Geoscientists and Engineers, 2017. p. 111-115.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearchpeer-review

  8. Published

    Fast 3D multichannel deconvolution of electromagnetic induction loop-loop apparent conductivity data sets acquired at low induction numbers. / Guillemoteau, Julien; Christensen, Niels Boie; Jacobsen, Bo Holm; Tronicke, Jens.

    In: Geophysics, Vol. 82, No. 6, 2017, p. E357-E369.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  9. 2016
  10. Published

    Fast approximate 1D modelling and inversion of transient electromagnetic data. / Christensen, N.B.

    In: Geophysical Prospecting, Vol. 64, No. 6, 01.11.2016, p. 1620-1631.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  11. Published

    Strictly horizontal lateral parameter correlation for 1D inverse modelling of large data sets. / Christensen, Niels Bøie.

    In: Near Surface Geophysics, Vol. 14, No. 5, 10.2016, p. 403-411 .

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  12. 2015
  13. Published

    An overview of a highly versatile forward and stable inverse algorithm for airborne, ground-based and borehole electromagnetic and electric data. / Auken, Esben; Christiansen, Anders Vest; Kirkegaard, Casper; Fiandaca, Gianluca; Schamper, Cyril; Behroozmand, Ahmad Ali; Binley, Andrew; Nielsen, Emil; Effersø, Flemming; Christensen, Niels Bøie; Sørensen, Kurt; Foged, Nikolaj; Vignoli, Giulio.

    In: Exploration Geophysics, Vol. 46, No. 3, 2015, p. 223-235.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  14. 2014
  15. Published

    Mapping pollution and coastal hydrogeology with helicopterborne transient electromagnetic measurements. / Christensen, N.B.; Halkjær, Max.

    In: Exploration Geophysics, Vol. 45, No. 4, 2014, p. 243-254.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  16. Published

    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. / Christensen, N.B.; Lawrie, Ken.

    In: Exploration Geophysics, Vol. 43, 2014, p. 213-227.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  17. Published

    Sensitivity functions of transient electromagnetic methods. / Christensen, N.B.

    In: Geophysics, Vol. 79, No. 4, 2014, p. E167-E182.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  18. 2013
  19. Published

    Derivative analysis for layer selection of geophysical borehole logs. / Davis, Aaron; Christensen, N.B.

    In: Computers & Geosciences, Vol. 60, 2013, p. 34-40.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  20. 2012
  21. Published

    Efficient full decay inversion of MRS data with a stretched-exponential approximation of the T2* distribution. / Behroozmand, Ahmad; Auken, Esben; Fiandaca, Gianluca; Christiansen, Anders Vest; Christensen, N.B.

    In: Geophysical Journal International, Vol. 190, No. 2, 2012, p. 900-912.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  22. Published

    Resolution analyses for selecting an appropriate airborne electromagnetic (AEM) system. / Christensen, N.B.; Lawrie, Ken.

    In: Exploration Geophysics, Vol. 43, 2012, p. 213-227.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  23. 2010
  24. Published

    Evaluating the salinity distribution of a shallow coastal aquifer by vertical multielectrode profiling (Denmark). / Poulsen, Søren Erbs; Rasmussen, Keld Rømer; Christensen, Niels Bøie; Christensen, Steen.

    In: Hydrogeology Journal, Vol. 18, No. 1, 01.02.2010, p. 161-171.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  25. Published

    Fast approximate 1D inversion of frequency domain electromagnetic data. / Christensen, N.B.; Fitzpatrick, Andrew; Munday, Tim.

    In: Near Surface Geophysics, Vol. 8, No. 1, 2010, p. 1-15.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  26. 2009
  27. Published

    A lateral model parameter correlation procedure for one-dimensional inverse modelling. / Christensen, N.B.; Tølbøll, R.J.

    In: Geophysical Prospecting, Vol. 57, No. 5, 2009, p. 919-929.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  28. Published

    Aquifer investigations in the León-Chinandega plains, Nicaragua, using electromagnetic and electrical methods. / Corriols, Marvin; Nielsen, Mette Ryom; Dahlin, Torleif; Christensen, N.B.

    In: Near Surface Geophysics, Vol. 7, No. 5-6, 2009, p. 413-425.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  29. Published

    Fast, laterally smooth inversion of airborne time-domain electromagnetic data. / Christensen, N.B.; Reid, James E.; Halkjær, Max.

    In: Near Surface Geophysics, Vol. 7, No. 5-6, 2009, p. 599-612.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  30. 2007
  31. Published

    Special Section - Marine Controlled-Source Electromagnetic Methods. 1D inversion and resolution analysis of marine controlled-source EM data. / Christensen, N.B.; Dodds, Kevin.

    In: Geophysics, Vol. 72, 2007, p. WA27-WA38.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  32. Published

    The sensitivity functions of frequency-domain magnetic dipole-dipole systems. / Tølbøll, R.J.; Christensen, N.B.

    In: Geophysics, Vol. 72, 2007, p. F45–F56.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  33. 2006
  34. Published

    1D inversion and analysis of marine controlled-source EM data. / Christensen, N.B.; Dodds, Kevin; Bulley, Ian.

    Proceedings of the AAPG meeting, Perth, WA, November 5-8, 2006.. 2006.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

  35. Published

    A survey of current trends in near-surface electrical and electromagnetic methods. / Auken, Esben; Pellerin, Louise; Christensen, N.B.; Sørensen, K.I.

    In: Geophysics, Vol. 71, No. 5, 2006, p. G249-G260.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  36. Published

    Approximate 2D inversion of airborne TEM data. / Christensen, N.B.; Wolfgram, Peter.

    Australian Earth Science Convention, 2-7 July, Melbourne, Australia. Australian Earth Science Convention, 2006.

    Research output: Contribution to book/anthology/report/proceedingArticle in proceedingsResearch

  37. Published

    Monitoring CO2 injection with cross-hole electrical resistivity tomography. / Christensen, N.B.

    In: Exploration Geophysics, Vol. 37, 2006, p. 44-49.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  38. Published

    Robust 1D inversion and analysis of helicopter electromagnetic (HEM) data. / Tølbøll, R.J.; Christensen, N.B.

    In: Geophysics, Vol. 71, 2006, p. G53-G62.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  39. 2005
  40. Published

    An Integrated Approach for Hydrogeophysical Investigations : New Technologies and a Case History. / Sørensen, K.I.; Auken, Esben; Christensen, N.B.; Pellerin, Louise.

    Near-Surface Geophysics. ed. / D.K. Butler. Vol. 13 USA : Society of Exploration Geophysics, 2005. p. 585-605 (Investigations in Geophysics, Vol. No. 13).

    Research output: Contribution to book/anthology/report/proceedingBook chapterResearch

  41. 2004
  42. Published

    Tolkning af helikopterbårne elektromagnetiske frekvensdomænedata fra Stevns, Storstrøms Amt. / Christensen, N.B.; Tølbøll, R.J.

    Rapport til Storstrøms Amt ed. Geologisk Institut, Aarhus Universitet, 2004. 39 p.

    Research output: Book/anthology/dissertation/reportReportResearch

  43. 2003
  44. Published

    A detailed inversion scheme for helicopterborne electromagnetic frequency-domain data. / Tølbøll, R.J.; Christensen, N.B.

    2003. Paper presented at 9th meeting of the EEGS-ES, Prague, Czech Republic, .

    Research output: Contribution to conferencePaperResearch

  45. Published

    A quantitative appraisal of airborne and ground-based transient electromagnetic (TEM) measurements in Denmark. / Christiansen, A.V.; Christensen, N.B.

    In: Geophysics, Vol. 68, 2003, p. 523-534.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  46. Published

    Approximate 2D inversion of AEM data. / Wolfgram, P.; Christensen, N.B.; Sattel, D.

    2003. Paper presented at 16th Geophysical Conference and Exhibition of the Australian Society of Exploration Geophysicists (ASEG), Adelaide, .

    Research output: Contribution to conferencePaperResearch

  47. Published

    Approximate 2D inversion of AEM data. / Wolfgram, P.; Sattel, D.; Christensen, N.B.

    In: Exploration Geophysics, Vol. 34, 2003, p. 29-33.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  48. Published

    Approximate 2D inversion of AEM data using the adaptive Born approximation. / Christensen, N.B.; Wolfgram, P.; Sattel, D.

    Adelaide, 2003. p. 0-0.

    Research output: Working paperResearch

  49. Published

    Tolkning af helikopterbårne elektromagnetiske frekvensdomænedata fra Ringkjøbing Amt : Rapport til Ringkjøbing Amt. / Christensen, N.B.; Tølbøll, R.J.

    Geologisk Institut, Aarhus Universitet, 2003. 26 p.

    Research output: Book/anthology/dissertation/reportReportResearch

  50. 2002
  51. Published

    A generic 1-D imaging method for transient electromagnetic data. / Christensen, N.B.

    In: Geophysics, Vol. 67, 2002, p. 438-447.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearch

  52. Published

    A quantitative appraisal of airborne and ground-based transient electromagnetic (TEM) measurements in Denmark. / Christiansen, A.V.; Christensen, N.B.

    In: Geophysics (online), 2002, p. 0-0.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearch

  53. Published

    Analysis of Helicopterborne Electromagnetic Data for Hydrogeological Investigations. / Christensen, N.B.; Møller, I.; Rasmussen, T.; Sørenen, K.I.; Tølbøll, R.J.

    2002. p. 0-0.

    Research output: Working paperResearch

  54. Published
  55. Published

    EMMA - a geophysical training and education tool for electromagnetic modeling and analysis. / Auken, E.; Nebel, L.; Sørensen, K.I.; Breiner, M.; Pellerin, L.; Christensen, N.B.

    In: Journal of Environmental and Engineering Geophysics, Vol. 7, No. 2, 2002, p. 57-68.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearch

  56. Published

    En vurdering af luftbårne elektromagnetiske frekvensdomænemetoders anvendelse til hydrogeofysisk kortlægning i Danmark. / Christensen, N.B.; Sørensen, K.I.; Tølbøll, R.J.; Rasmussen, T.M.; Møller, I.

    Geologisk Institut, Aarhus Universitet, i samarbejde med GEUS, 2002. 39 p.

    Research output: Book/anthology/dissertation/reportReportResearch

  57. Published

    The sensitivity functions of airborne frequency domain methods. / Tølbøll, R.J.; Christensen, N.B.

    2002. p. 0-0.

    Research output: Working paperResearch

  58. 2001
  59. Published

    En sammenligning af flybåren og jordbaseret TEM. / Christiansen, A.V.; Christensen, N.B.

    2001. p. 471-480.

    Research output: Working paperResearch

  60. Published

    Pulled array continuous electrical sounding with an additional inductive source: an experimental design study. / Christensen, N.B.; Sørensen, K.

    In: Geophysical Prospecting, Vol. 49, 2001, p. 241-254.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearch

  61. Published
  62. Published

    Rapid inversion of 2-D geoelectrical data by multichannel deconvolution. / Møller, I.; Jacobsen, B.H.; Christensen, N.B.

    In: Geophysics, Vol. 66, 2001, p. 800-808.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

  63. Published

    Sikring af luftbårne elektromagnetiske data fra Fyns Amt. / Poulsen, L.H.; Christiansen, A.V.; Christensen, N.B.

    Geologisk Institut, Aarhus Universitet, 2001.

    Research output: Book/anthology/dissertation/reportReportResearch

  64. Published

    Sikring af luftbårne elektromagnetiske data fra Ringkjøbing Amt. / Poulsen, L.H.; Christiansen, A.V.; Christensen, N.B.

    Geologisk Institut, Aarhus Universitet, 2001.

    Research output: Book/anthology/dissertation/reportReportResearch

  65. Published
  66. 1993
  67. Published

    Transient sondering - en ny og effektiv metode til kortlægning af undergrunden. / Auken, Esben; Effersø, Flemming; Bøie Christensen, Niels.

    In: Geologisk Nyt, No. 4, 1993, p. 8-11.

    Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearch