Lennart de GrootPaleomagnetic laboratory Fort Hoofddijk - Utrecht University

Publications

Submitted
35. Out, F., de Boer, R.A., Walmsley, J., de Groot, L.V.: Assessing the impact of the grain size distribution on magnetic measurements, submitted to Geochemistry, Geophysics, Geosystems
33. Meyer, R., de Groot, L.V.: Local magnetic anomalies in rugged volcanic terrain explain bias in paleomagnetic data: consequences for sampling, submitted to Geochemistry, Geophysics, Geosystems
 
Accepted
32. Cortés-Ortuño, D.I., Out, F., Kosters, M.E., Fabian, K., de Groot, L.V.: Micromagnetic Tomography: Numerical Libraries, accepted by Computers & Geosciences, doi: 10.1016/j.cageo.2024.105555 CAGEO
 
2023
31. van Grinsven, L.B., van Leeuwen, T., de Groot, L.V.: An end-member modeling approach to pseudo-Thellier paleointensity data, Geophysical Journal International, Vol. 235, Issue 3, doi: 10.1093/gji/ggad385 GJI pdf
30. Lloyd, S.J., Biggin, A.J., Hill, M.J., de Groot, L.V., Suttie, N., Morris, J., Bohnel, H.N., Shaw., J.: The use of high frequency microwaves in absolute palaeomagnetic intensity experiments: Frontiers in Earth Sciences, Vol. 11, doi: 10.3389/feart.2023.1188528 Frontiers pdf
29. Kosters, M.E., de Boer, R.A., Out, F., Cortés-Ortuño, D.I., de Groot, L.V.: Unravelling the magnetic signal of individual grains in a Hawaiian lava using Micromagnetic Tomography, Geochemistry, Geophysics, Geosystems, 24, e2022GC010462, doi: 10.1029/2022GC010462. G-cubed pdf
 
2022
28. Cortés-Ortuño, D.I., Fabian, K., de Groot, L.V.: Mapping magnetic signals of individual magnetite grains to their internal magnetic configurations using Micromagnetic Models, Journal of Geophysical Research: Solid Earth, 127, e2022JB024234, doi: 10.1029/2022JB024234 JGR Sol Ea pdf
27. Out, F., Cortés-Ortuño, D.I., Fabian, K., van Leeuwen, T., de Groot, L.V.: A first-order statistical exploration of the mathematical limits of Micromagnetic Tomography, Geochemistry, Geophysics, Geosystems, 22, e2021GC010184, doi: 10.1029/2021GC010184. G-cubed pdf
 
2021
26. de Groot, L.V., Fabian, K., Béguin, A., Kosters, M.E., Fu, R.R., Jansen, C.M.L., Harrison, R.J., van Leeuwen, T., Barnhoorn, A.: Micromagnetic Tomography for Paleomagnetism and Rock-magnetism, Journal of Geophysical Research: Solid Earth, 126, e2021JB022364, doi: 10.1029/2021JB022364. JGR Sol Ea pdf
25. Cortés-Ortuño, D.I., Fabian, K., de Groot, L.V..: Single particle multipole expansions from Micromagnetic Tomography, Geochemistry, Geophysics, Geosystems, 22, e2021GC009663, doi: 10.1029/2021GC009663. G-cubed pdf
24. Béguin, A., Pimentel, A.H.G., de Groot, L.V..: Full-vector paleosecular variation curve for the Azores: enabling reliable paleomagnetic dating for the past 2 ky, Journal of Geophysical Research: Solid Earth, 126, e2020JB019745, doi: 10.1029/2020JB019745. JGR Sol Ea pdf
 
2020
23. Béguin, A., Paterson, G.A., Biggin, A.J., de Groot, L.V.: Paleointensity.org: an online, open source, application for the interpretation of paleointensity data, Geochemistry, Geophysics, Geosystems, 21, doi: 10.1029/2019GC008791. G-cubed pdf
Béguin, A., Paterson, G.A., Biggin, A.J., de Groot, L.V.: Paleointensity.org: an online, open source, application for the interpretation of paleointensity data - source codes, Zenodo, 3744224, doi: 10.5281/zenodo.3744224 Zenodo  
22. Ertepinar, P., Langereis, C.G., Biggin, A.J., de Groot, L.V., Kulakoglu, F.: Archaeomagnetism at Kültepe: untangling the order of fire events in antiquity, in: Integrative approaches to the archaeology and history of Kültepe-Kaneš, Subartu series XLV, vol. 45, pp 99-112, ISBN: 978-2-503-58559-8 Subartu pdf
21. Kapper, L., Serneels, V., Panovska, S., Garcia Ruiz, R., Hellio, G., de Groot, L.V., Goguitchaichvili, A., Morales, J., Cejudo Ruiz, R.: Novel insights on the geomagnetic field in West Africa from a new intensity reference curve (0-2000 AD), Scientific Reports, 10, 1121, doi: 10.1038/s41598-020-57611-9. Sci rep pdf
 
2019
20. de Groot, B.M., de Groot, L.V.: A low-cost device for measuring local magnetic anomalies in volcanic terrain, Geoscientific Instrumentation, Methods and Data Systems, 8, 217–225, doi: 10.5194/gi-8-217-2019. GI pdf
19. Béguin, A., Filippidi, A., de Lange, G.J., de Groot, L.V.: The evolution of the Levantine Iron Age Geomagnetic Anomaly captured in Mediterranean sediments, Earth and Planetary Science Letters, 511, 55-66, doi: 10.1016/j.epsl.2019.01.021. EPSL pdf
18. Fabian, K., de Groot, L.V.: A uniqueness theorem in potential theory with implications for tomography-assisted inversion, Geophysical Journal International, 216, 760–766, doi: 10.1093/gji/ggy455. GJI pdf
 
2018
17. Monster, M.W.L., van Galen, J., Kuiper, K.F., Dekkers, M.J., de Groot, L.V.: A late-quaternary full-vector geomagnetic record from El Golfo section, El Hierro, Canary Islands, Geophysical Journal International, 215, 1701–1717, doi: 10.1093/gji/ggy361. GJI pdf
16. ter Maat, G.W., Pennock, G.M., de Groot, L.V.: A chemical, crystallographic and magnetic characterisation of individual iron-oxide grains in Hawaiian lavas, Scientific Data, 5, art.nr.: 180168, doi: 10.1038/sdata.2018.162. Sci Data pdf
ter Maat, G.W., Pennock, G.M., de Groot, L.V.: A chemical, crystallographic and magnetic characterisation of individual iron-oxide grains in Hawaiian lavas, PANGAEA data set, doi: 10.1594/PANGAEA.886180. PANGAEA  
15. de Groot, L.V., Fabian, K., Béguin, A., Reith, P., Barnhoorn, A., Hilgenkamp, J.W.M.: Determining individual particle magnetizations in assemblages of micro-grains, Geophysical Research Letters, 45, doi: 10.1002/2017GL076634. GRL pdf
de Groot, L.V., Fabian, K., Béguin, A., Reith, P., Barnhoorn, A., Hilgenkamp, J.W.M.: List of grains and results of the Scanning SQUID Magnetometer (SSM) scan, PANGAEA data set, doi: 10.1594/PANGAEA.886724. PANGAEA  
14. Monster, M.W.L., Langemeijer, J., Wiarda, L.R., Dekkers, M.J., Biggin, A.J., Hurst, E., de Groot, L.V.: Full-vector geomagnetic field records from the East Eifel, Germany, Physics of the Earth and Planetary Interiors, 274, p. 148-157, doi: 10.1016/j.pepi.2017.11.009. PEPI pdf
 
2017
Fabian, K., de Groot, L.V.: A uniqueness theorem in potential theory with implications for tomography-assisted inversion, arXiv.org, arXiv:1712.06136 (not peer reviewed). arXiv pdf
Jackson, M.J., de Groot, L.V.: Report on International Conference on Rock Magnetism, IRM Quarterly, 27, No. 3 (not peer reviewed) IRM pdf
 
2016
13. Mullender, T.A.T., Frederichs, T., Hilgenfeldt, C., de Groot, L.V., Fabian, K., Dekkers, M.J.: Automated paleomagnetic and rock magnetic data acquisition with an in-line horizontal '2G' system, Geochemistry, Geophysics, Geosystems, doi: 10.1002/2016GC006436. G-cubed pdf
12. de Groot, L.V., Pimentel, A.H.G., Di Chiara, A.: The multi-method paleointensity approach applied to volcanics from Terceira: full-vector geomagnetic data for the past 50 kyr, Geophysical Journal International, 206, 590-604, doi: 10.1093/gji/ggw095. GJI pdf
11. Pimentel, A.H.G., Zanon, V., de Groot, L.V., Hipolito, A., Di Chiara, A., Self, S.: Stress-induced comenditic trachyte effusion triggered by trachybasalt intrusion: multidisciplinary study of the 1761 AD eruption at Terceira Island (Azores), Bulletin of Volcanology, 78:22, doi: 10.1007/s00445-016-1015-6. Bull Volcan pdf
10. Ertepinar, P., Langereis, C.G., Biggin, A.J., de Groot, L.V., Kulakoğlu, F., Omura, S., Süel, A.: Full vector archaeomagnetic records from Anatolia between 2000 and 1400 BCE: implications for geomagnetic field models and the dating of fires in antiquity, Earth and Planetary Science Letters, 434, 171-186, doi: 10.1016/j.epsl.2015.11.015. EPSL pdf
 
2015
9. Monster, M.W.L., de Groot, L.V., Langereis, C.G., Dekkers, M.J.: MSP-Tool: a VBA-based software tool for the analysis of multispecimen paleointensity data, Frontiers in Earth Science, 3:86, doi: 10.3389/feart.2015.00086. Frontiers pdf
8. van Hinsbergen, D.J.J., de Groot, L.V., van Schaik, S.J., Spakman, W., Bijl, P.K., Sluijs, A., Langereis, C.G., Brinkhuis, H.: A paleolatitude calculator for paleoclimate studies, PLoS ONE, 10(6): e0126946, doi:10.1371/journal.pone.0126946. PLoS ONE pdf
7. de Groot, L.V., Béguin, A., Kosters, M.E., van Rijsingen, E.M., Struijk, E.L.M., Biggin, A.J., Hurst, E.A., Langereis, C.G., Dekkers, M.J.: High paleointensities for the Canary Islands constrain the Levant geomagnetic high, Earth and Planetary Science Letters, 419, 154-167, doi: 10.1016/j.epsl.2015.03.020. EPSL pdf
6. Monster, M.W.L., de Groot, L.V., Biggin, A.J., Dekkers, M.J.: The performance of various palaeointensity techniques as function of rock-magnetic behaviour – a case study for La Palma, Physics of the Earth and Planetary Interiors, 242, p. 36-49, doi: 10.1016/j.pepi.2015.03.004. PEPI pdf
 
2014
5. de Groot, L.V., Fabian, K., Bakelaar, I.A., Dekkers, M.J.: Magnetic Force Microscopy reveals meta-stable magnetic domain states that prevent reliable absolute palaeointensity experiments, Nature Communications, 5, p. 1-10, doi: 10.1038/ncomms5548. Ncomms pdf
4. de Groot, L.V., Dekkers, M.J., Visscher, M., ter Maat, G.W., 2014: Magnetic properties and paleointensities as function of depth in a Hawaiian lava flow, Geochemistry, Geophysics, Geosystems, 15, doi:10.1002/2013GC005094. G-cubed pdf
 
2013
3. de Groot, L.V., Biggin, A.J., Dekkers, M.J., Langereis, C.G., Herrero-Bervera, E., 2013: Rapid regional perturbations to the recent global geomagnetic decay revealed by a new Hawaiian record, Nature Communications, 4, p. 1–7, doi: 10.1038/ncomms3727. Ncomms pdf
2. de Groot, L.V., Mullender, T.A.T., Dekkers, M.J., 2013: An evaluation of the influence of the experimental cooling rate along with other thermomagnetic effects to explain anomalously low palaeointensities obtained for historic lavas of Mt Etna (Italy), Geophysical Journal International, 193, p. 1198–1215, doi: 10.1093/gji/ggt065. GJI pdf
 
2012
1. de Groot, L.V., Dekkers, M.J., Mullender, T.A.T., 2012: Exploring the potential of acquisition curves of the anhysteretic remanent magnetization as a tool to detect subtle magnetic alteration induced by heating, Physics of the Earth and Planetary Interiors, 194-195, p. 1–14, doi: 10.1016/j.pepi.2012.01.006. PEPI pdf

Theses

PhD thesis (cum laude) de Groot, L.V., 2013: High-resolution records of non-dipole variations in the intensity of the Earth’s magnetic field, Utrecht Studies in Earth Sciences No. 037, ISBN 978-90-6266-332-3. pdf
MSc thesis (GPA 4.0) de Groot, L.V., 2008: Inclination error correction in red beds, comparing methods using Permian red beds from the Lodève region, Southern France; Utrecht University.
BSc thesis de Groot, L.V., 2006: Measuring the anisotropy of isothermal or anhysteretic remanent magnetisation; Utrecht University.