Thomas Kalscheuer
Senior Lecturer/Associate Professor at Institutionen för geovetenskaper; Geofysik
- Telephone:
- +46 18 471 38 19
- E-mail:
- Thomas.Kalscheuer@geo.uu.se
- Visiting address:
- Geocentrum, Villavägen 16
752 36 Uppsala - Postal address:
- Villavägen 16
752 36 UPPSALA
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- ORCID:
- 0000-0003-3819-8182
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Biography
2017 Docent (Associate Professor), Uppsala University
Since 2013 Senior Lecturer, Uppsala University
2009-2013 Postdoctoral Fellow, Swiss Federal Institute of Technology, Zurich
2008 PhD in Geophysics, Uppsala University
2004 Diplom-Geophysiker, University of Cologne, Germany
Research
My research focuses on the development of multidimensional numerical forward modelling and inversion schemes for data from various geophysical electromagnetic (EM) and potential field methods, the joint interpretation of EM, seismic, potential field and borehole data, and the application to geotechnical, hardrock, tectonic, hydrological, geothermal and volcanological targets.
In numerical development, I have contributed to individual and joint inversion schemes of data from natural and controlled-source EM and geoelectric methods in 1D and 2D, novel approaches to model error and resolution analyses, and 3D forward modelling algorithms for EM and potential field methods. At present, I work on the development of 3D inversion algorithms for natural and controlled-source EM methods.
Publications
Recent publications
- Improved accuracy of plane-wave electromagnetic modelling by application of the total and scattered field decomposition and perfectly matched layers (2023)
- Constrained 2D inversion of radio-magnetotelluric and controlled-source audio-magnetotelluric data using high-resolution reflection seismic data: An example in groundwater surveying from Heby, Sweden (2023)
- Constrained 2D inversion of radio-magnetotelluric and controlled-source audio-magnetotelluric data using high-resolution reflection seismic data (2023)
- Spectral element method for 3-D controlled-source electromagnetic forward modelling using unstructured hexahedral meshes (2023)
- Iterative solution methods for 3D controlled-source electromagnetic forward modelling of geophysical exploration scenarios (2023)
All publications
Articles
- Improved accuracy of plane-wave electromagnetic modelling by application of the total and scattered field decomposition and perfectly matched layers (2023)
- Constrained 2D inversion of radio-magnetotelluric and controlled-source audio-magnetotelluric data using high-resolution reflection seismic data: An example in groundwater surveying from Heby, Sweden (2023)
- Constrained 2D inversion of radio-magnetotelluric and controlled-source audio-magnetotelluric data using high-resolution reflection seismic data (2023)
- Spectral element method for 3-D controlled-source electromagnetic forward modelling using unstructured hexahedral meshes (2023)
- Iterative solution methods for 3D controlled-source electromagnetic forward modelling of geophysical exploration scenarios (2023)
- Efficient goal-oriented mesh refinement in 3-D finite-element modelling adapted for controlled source electromagnetic surveys (2021)
- Recursive Analytical Formulae of Gravitational Fields and Gradient Tensors for Polyhedral Bodies with Polynomial Density Contrasts of Arbitrary Non-negative Integer Orders (2020)
- Uncertainty and Resolution Analysis of 2D and 3D Inversion Models Computed from Geophysical Electromagnetic Data (2020)
- Magnetotelluric Constraints on the Temperature, Composition, Partial Melt Content, and Viscosity of the Upper Mantle Beneath Svalbard (2020)
- Using GPR Data as Constraints in RMT Data Inversion for Water Content Estimation (2020)
- Boat-towed radio-magnetotelluric and controlled source audio-magnetotelluric study to resolve fracture zones at Äspö Hard Rock Laboratory site, Sweden (2019)
- A new reference model for 3D inversion of airborne magnetic data in hilly terrain (2018)
- Exact solutions of the vertical gravitational anomaly for a polyhedral prism with vertical polynomial density contrast of arbitrary orders (2018)
- Two-dimensional audiomagnetotelluric and magnetotelluric modelling of ore deposits (2018)
- Gravity Gradient Tensor of Arbitrary 3D Polyhedral Bodies with up to Third-Order Polynomial Horizontal and Vertical Mass Contrasts (2018)
- Joint inversion of lake-floor electrical resistivity tomography and boat-towed radio-magnetotelluric data illustrated on synthetic data and an application from the Äspö Hard Rock Laboratory site, Sweden (2018)
- Gravity Anomalies of Arbitrary 3D Polyhedral Bodies with Horizontal and Vertical Mass Contrasts (2017)
- Fast 3-D large-scale gravity and magnetic modeling using unstructured grids and an adaptive multilevel fast multipole method (2017)
- Portable audio magnetotellurics - experimental measurements and joint inversion with radiomagnetotelluric data from Gotland, Sweden (2017)
- A magnetotelluric investigation of the Scandinavian Caledonides in western Jämtland, Sweden, using the COSC borehole logs as prior information (2017)
- Two-dimensional magnetotelluric inversion using reflection seismic data as constraints and application in the COSC project (2017)
- Consistency investigation, vertical gravity estimation and inversion of airborne gravity gradient data – A case study from northern Sweden (2016)
- Extracting geoelectrical maps from vintage very-low-frequency airborne data, tipper inversion, and interpretation (2016)
- Improved 1D inversions for sea ice thickness and conductivity from electromagnetic induction data (2016)
- A glimpse beneath Antarctic sea ice (2016)
- Seismic imaging in the eastern Scandinavian Caledonides: Siting the 2.5 km deep COSC-2 borehole, central Sweden (2016)
- 3D magnetotelluric modelling of the Alnö alkaline and carbonatite ring complex, central Sweden (2016)
- Joint inversions of three types of electromagnetic data explicitly constrained by seismic observations (2015)
- Integrated interpretation of helicopter and ground-based geophysical data recorded within the Okavango Delta, Botswana (2015)
- Probabilistic 3-D time-lapse inversion of magnetotelluric data: application to an enhanced geothermal system (2015)
- Crustal structure beneath southern Norway imaged by magnetotellurics (2014)
- Hydrogeophysical investigations in the western and north-central Okavango Delta (Botswana) based on helicopter and ground-based transient electromagnetic data and electrical resistance tomography (2014)
- Constraining helicopter electromagnetic models of the Okavango Delta with seismic-refraction and seismic-reflection data (2014)
- A finite-element-based domain-decomposition approach for plane wave 3D electromagnetic modeling (2014)
- A hybrid boundary element-finite element approach to modeling plane wave 3D electromagnetic induction responses in the Earth (2014)
- Two-dimensional probabilistic inversion of plane-wave electromagnetic data (2014)
- Delineation of a quick clay zone at Smørgrav, Norway, with electromagnetic methods under geotechnical constraints (2013)
- Processing and inversion of commercial helicopter time-domain electromagnetic data for environmental assessments and geologic and hydrologic mapping (2013)
- Paleo-megalake and paleo-megafan in southern Africa (2013)
- Boundary element solutions for broad-band 3-D geo-electromagnetic problems accelerated by an adaptive multilevel fast multipole method (2013)
- A goal-oriented adaptive finite-element approach for plane wave 3-D electromagnetic modelling (2013)
- 2D joint inversion of RMT and ERT data versus individual 3D inversion of full tensor RMT data (2012)
- A hybrid regularization scheme for the inversion of magnetotelluric data from natural and controlled sources to layer and distortion parameters (2012)
- Focused time-lapse inversion of radio and audio magnetotelluric data (2012)
- CSRMT measurements in the frequency range 1-250 kHz to map a normal fault in the Volvi Basin, Greece (2011)
- Non-linear model error and resolution properties from two-dimensional single and joint inversions of direct current resistivity and radiomagnetotelluric data (2010)
- Radiomagnetotelluric two-dimensional forward and inverse modelling accounting for displacement currents (2008)
- Electromagnetic evidence for an ancient avalanche caldera rim on the south flank of Mount Merapi, Indonesia (2007)
- A non-linear truncated SVD variance and resolution analysis of two-dimensional magnetotelluric models (2007)
- Using preconditioned iterative methods in electromagnetic geophysical modelling including perfectly-matched layers
- A comparison between controlled-source electromagnetic field components and transfer functions as input data for three-dimensional non-linear conjugate gradient inversion
- Three-dimensional electromagnetic inversion of transfer function data from controlled sources
- Using boat-towed controlled source radio-magnetotellurics to resolve fracture zones at Äspö Hard Rock Laboratory site, Sweden
- Schur complement-based preconditioner applied to 3D controlled-source electromagnetic forward problems of geophysical applications
Books
Chapters
Conferences
- Controlled Source Boat-towed Radio-magnetotellurics for Site Investigation at Äspö Hard Rock Laboratory, Southeastern Sweden (2017)
- A multi-disciplinary investigation of Irish warm springs and their potential for geothermal energy provision (2015)
- An ancient mega-lake and mega-delta in southern Africa: hydrogeophysical investigations across the Okavango Delta (2014)
- Non-linear smoothness-constrained model error and resolution estimates (2010)
- A hybrid scheme for the inversion of CSTRMT data for layer and distortion parameters (2010)
- Accurate and robust evaluation of singularboundary element integrals for computing 3D radiomagnetotelluric fields (2010)
- Two-Dimensional Single and Joint Inversion of Direct Current Resistivity and Radiomagnetotelluric Data: Comparison of Non-linear Model Variance and Resolution Properties (2008)
- Radiomagnetotelluric Two-Dimensional Forward and Inverse Modelling Accounting for Displacement Currents (2008)
- A non-linear truncated SVD variance and resolution analysis of 2D magnetotelluric models (2006)