Staff Profile

GEORGI LAUKERT

Preferred Name: Georgi Laukert

MSCA Global Postdoctoral Research Fellow at WHOI and Univeristy of Bristol

Postdoctoral Fellow

Marine Chemistry & Geochemistry

Email: georgi.laukert@whoi.edu

Phone: 508 289 3586

Office: Clark Laboratory-4th Floor MC&G 

Address:
 Woods Hole Oceanographic Institution,   Mail Stop 25
266 Woods Hole Road
Woods Hole, MA 02543

Lab/Group Site: https://www2.whoi.edu/site/nirvana/

Some Info I completed my B.Sc. (2008) and M.Sc. (2011) at the University of Freiburg before spending almost two years as a geochemist in Colombia, where I focused on gold and platinum exploration and environmental impact assessments. After returning to Europe, I completed my doctorate (2017) at Kiel University, specializing in the use of different oceanic tracers to study circulation and biogeochemical processes in the Arctic Ocean. As a postdoc at GEOMAR, I expanded my expertise in oceanic tracers and contributed to large initiatives such as GEOTRACES and MOSAiC. In 2020, I was awarded an international postdoctoral fellowship from the Ocean Frontier Institute and conducted research at Dalhousie University and WHOI to investigate the effects of East Greenland on nutrient bioavailability in the North Atlantic. I currently lead the Marie Curie project "ICEotopes", which focuses on the interplay of physical and biogeochemical processes at the sea ice-ocean interface.

Education

  • 2017: Doctorate in Isotope Geochemistry (Summa cum laude, Petersen Award for excellent doctoral research), Kiel University & GEOMAR, Germany
  • 2011: M.Sc. in Geology (German GPA 1.2, Alumni Prize for excellent M.Sc. degree), University of Freiburg, Germany
  • 2008: B.Sc. in Geosciences (German GPA 1.9), University of Freiburg, Germany

Research Statement

My research focuses on trace elements in the high latitudes, using their isotopic composition in seawater, marine sediments, sea ice, and snow to investigate ocean circulation and trace element fluxes. I am particularly interested in sea ice as an important biogeochemical interface between the atmosphere and the surface ocean, and between coastal areas and the open ocean. I also study the effects of melting ice sheets and the pathways and fate of meltwater and its constituents in polar regions.

Publications

  • Xu, A., Hathorne, E., Laukert, G., Frank, M. (2023): Overlooked riverine contributions of dissolved neodymium and hafnium to the Amazon estuary and oceans. Nat. Commun. 14, 4156. https://doi.org/10.1038/s41467-023-39922-3.
  • Rabe, B., Martin, T., Solomon, A., Assmann, K. M., Biddle, L. C., Haine, T., Hattermann, T., Haumann, F. A., Jahn, A., Karpouzoglou, T., Laukert, G., Naveira Garabato, A., Rosenblum, E., Sikes, E., Yin, L. , Zhang, X. (2023): Polar Fresh Water in a Changing Global Climate: Linking Arctic and Southern Ocean Processes. Bull. Amer. Meteor. Soc. 104, E970–E979. https://doi.org/10.1175/BAMS-D-23-0046.1.
  • Yu, Y., Xie, R. C., Gutjahr, M., Laukert, G., Cao, Z., Hathorne, E., Siebert, C., Patton, G., Frank, M. (2022): High latitude controls on dissolved barium isotope distributions in the global ocean. Geochem. Perspect. Lett. 24, pp. 22-26. https://doi.org/10.7185/geochemlet.2242.
  • Laukert, G., Grasse, P., Novikhin, A., Povazhnyi, V., Doering, K., Hölemann, J., Janout, M., Bauch, D., Kassens, H., Frank, M. (2022): Nutrient and silicon isotope dynamics in the Laptev Sea and implications for nutrient availability in the Transpolar Drift. Global Biogeochem. Cycles 36, e2022GB007316. https://doi.org/10.1029/2022GB007316.
  • Laukert, G., Peeken, I., Bauch, D., Krumpen, T., Hathorne, E. C., Werner, K., Gutjahr, M., Frank, M. (2022): Neodymium isotopes trace marine provenance of Arctic sea ice. Geochem. Perspect. Lett. 22, pp. 10-15. https://doi.org/10.7185/geochemlet.2220.
  • Rabe, B., et al., Laukert, G. (2022): Overview of the MOSAiC expedition: Physical oceanography. Elementa 10(1), 00062. https://doi.org/10.1525/elementa.2021.00062.
  • Paffrath, R., Laukert, G., Bauch, D., Rutgers van der Loeff, M., Pahnke, K. (2021): Separating individual contributions of major Siberian rivers in the Transpolar Drift of the Arctic Ocean. Sci. Rep. 11, 8216. https://doi.org/10.1038/s41598-021-86948-y.
  • Fuhr, M., Laukert, G., Yu, Y., Nürnberg, D., Frank, M. (2021): Tracing water mass mixing from the Equatorial to the North Pacific Ocean with dissolved neodymium isotopes and concentrations. Frontiers Mar. Sci. 7, 603761. https://doi.org/10.3389/fmars.2020.603761.
  • Rahlf, P., Laukert, G., Hathorne, E. C., Vieira, L. H., Frank, M. (2021): Dissolved neodymium and hafnium isotopes and rare earth elements in the Congo River Plume: Tracing and quantifying continental inputs into the southeast Atlantic. Geochim. Cosmochim. Acta 294, pp. 192-214. https://doi.org/10.1016/j.gca.2020.11.017.
  • Janout, M. A., Hölemann, J., Laukert, G., Smirnov, A., Krumpen, T., Bauch, D., Timokhov, L. (2020): On the variability of stratification in the freshwater-influenced Laptev Sea region. Frontiers Mar. Sci., 7:543489. https://doi.org/10.3389/fmars.2020.543489.
  • Rahlf, P., Hathorne, E. C., Laukert, G., Gutjahr, M., Weldeab, S., Frank, M. (2020): Tracing water mass mixing and continental inputs in the southeastern Atlantic Ocean with dissolved neodymium isotopes. Earth Planet. Sci. Lett. 530, 11944. https://doi.org/10.1016/j.epsl.2019.115944.
  • Laukert, G., Makhotin, M., Petrova, M. V., Frank, M., Hathorne, E. C., Bauch, D., Böning, P., Kassens, H. (2019): Water mass transformation in the Barents Sea inferred from radiogenic neodymium isotopes, rare earth elements and stable oxygen isotopes. Chem. Geol. 511, pp. 416-430. http://doi.org/10.1016/j.chemgeo.2018.10.002.
  • Laukert, G., Frank, M., Hathorne, E. C., Krumpen, T., Rabe, B., Bauch, D., Werner, K., Peeken, I., Kassens, H. (2017): Pathways of Siberian freshwater and sea ice in the Arctic Ocean traced with radiogenic neodymium isotopes and rare earth elements. Polarforschung 87 (1), pp. 3-13. http://doi.org/10.2312/polarforschung.87.1.3.
  • Laukert, G., Frank, M., Bauch, D., Hathorne, E. C., Gutjahr, M., Janout, M., Hölemann, J. (2017): Transport and transformation of riverine neodymium isotope and rare earth element signatures in high latitude estuaries: A case study from the Laptev Sea. Earth Planet. Sci. Lett. 477, pp. 205-217. https://doi.org/10.1016/j.epsl.2017.08.010.
  • Laukert, G., Frank, M., Bauch, D., Hathorne, E. C., Rabe, B., von Appen, W. J., Wegner, C., Zieringer, M., Kassens, H. (2017): Ocean circulation and freshwater pathways in the Arctic Mediterranean based on a combined Nd isotope, REE and oxygen isotope section across Fram Strait. Geochim. Cosmochim. Acta 202, pp. 285-309. https://doi.org/10.1016/j.gca.2016.12.028.
  • Laukert, G., von der Handt, A., Hellebrand, E., Snow, J. E., Hoppe, P., Klügel, A. (2014): High-pressure reactive melt stagnation recorded in abyssal pyroxenites from the ultraslow-spreading Lena Trough, Arctic Ocean. J. Petrology 55 (2), pp. 427-458. https://doi.org/10.1093/petrology/egt073.

Contributions to conferences, seminars and workshops

  • Keynote: Laukert, G. (2024): River water distribution and influence during MOSAiC based on isotopic provenance tracers. 3rd MOSAiC Science Conference.
  • Schulz, K., Koenig, Z., Muilwijk, M., Bauch, D., Hoppe, C.J.M., Droste, E.S., Hoppmann, M., Chamberlain, E.J., Laukert, G., Stanton, T., Quintanilla-Zurita, A., Fer, I., Heuzé, C., Karam, S., Mieruch-Schnülle, S., Baumann, T., Vredenborg, M., Tippenhauer, S., Granskog, M.A. (2024): The Eurasian Arctic Ocean along the MOSAiC drift (2019-2020): An interdisciplinary perspective on properties and processes. 3rd MOSAiC Science Conference.
  • Bauch, D., Laukert, G., Damm, E., D’Angelo, A., Fang, Y.-C., Kuznetsov, I., Mellat, M., Meyer, H., Rabe, B., Schaffer, J., Schulz, K., Tippenhauer, S., Vredenborg, M. (2024): Winter sea-ice influence in relation to river water distribution in the Transpolar Drift during MOSAIC. 3rd MOSAiC Science Conference.
  • Vredenborg, M., Laukert, G., Rabe, B., Bauch, D., Tippenhauer, S. (2024): CTD and tracer-based insights into the advec4on pathways and modifica4on of Atlan4c Water during MOSAiC. 3rd MOSAiC Science Conference.
  • Bauch, D., Meyer, H., Damm, E., Abrahamsson, K., Angelopoulos, M., D’Angelo, A., Laukert, G., Mellat, M., Nomura, D., Stefels, J. (2024): Spatial and temporal variability of stable isotopes (δD and δ18O) of sea ice cores from the MOSAiC ice camp during winter 2019/2020. 3rd MOSAiC Science Conference.
  • Laukert, G., Bauch, D., Damm, E., Krumpen, T., Kienast, S. S., Kienast M., Hathorne, E., Simões Pereira, P., D’Angelo, A., Nomura, D. (2024): Constraining surface ocean influence on chemical variability in first-year ice during MOSAiC based on radiogenic neodymium isotopes. 3rd MOSAiC Science Conference.
  • Invited: Laukert, G. (2023): From Siberia to Fram Strait – Exploring nutrient pathways and cycling in the surface layer of the Arctic Ocean. Polar Biogeochemistry Seminar Series of the British Antarctic Survey.
  • Bauch, D., Laukert, G., Andersen, N., Damm, E., D’Angelo, A., Fang, Y.-C., Kuznetsov, I., Mellat, M., Meyer, H., Rabe, B., Rabe, B., Schaffer, J., Schulz, K., Tippenhauer, S., Vredenborg, M. (2023): Sea-ice influence in the upper water column during MOSAiC based on oxygen isotopes. AGU Fall Meeting.
  • Bauch, D., Andersen, N., Damm, E., D’Angelo, A., Fang, Y.-C., Kuznetsov, I., Laukert, G., Meyer, H., Rabe, B., Rabe, B., Schaffer, J., Schulz, K., Tippenhauer, S., Vredenborg, M. (2023): Stable oxygen isotopes from the MOSAIC expedition show vertical and horizontal variability of sea-ice and river water signals in the upper Arctic Ocean during winter. EGU General Assembly.
  • Vredenborg, M., Körtke, W., Rabe, B., Walter, M., Tippenhauer, S., Huhn, O., Bauch, D., Laukert, G. (2023): Upper Arctic Ocean properties and water mass pathways during the year-round MOSAiC expedition in the context of historical observations. EGU General Assembly.
  • Bauch, D., Andersen, N., Damm, E., D’Angelo, A., Fang, Y.-C., Kuznetsov, I., Laukert, G., Meyer, H., Rabe, B., Schaffer, J., Schulz, K., Tippenhauer, S., Vredenborg, M. (2023): Variability of river water and sea-ice signals in the upper Arctic Ocean during winter 2019/2020. 2nd MOSAiC Science Conference.
  • Bauch, D., Andersen, N., Damm, E., D’Angelo, A., Fang, Y.-C., Kuznetsov, I., Laukert, G., Mellat, M., Meyer, H., Rabe, B., Schaffer, J., Schulz, K., Tippenhauer, S., Vredenborg, M. (2023): Variability of sea‐ice and river water signals in the upper Arctic Ocean during winter 2019/2020. 2nd MOSAiC Science Conference.
  • Invited: Laukert, G. (2022): Elucidating Arctic Ocean advective pathways using chemical provenance tracers. Topic 2 Seminar, AWI and GEOMAR.
  • Laukert, G., Bauch, D., Damm, E., Rabe, B., Kienast, S. S., Hathorne, E., Vredenborg, M., Krumpen, T., Tippenhauer, S., Simões Pereira, P., A., D’Angelo, Nomura, D. (2022): Potential influence of Siberian river water on marine and sea-ice biology and biogeochemical cycles during the MOSAiC Drift Campaign. AGU Fall Meeting.
  • Doering, K., Laukert, G., Kienast, S. S., Kienast, M., Kassens, H., Frank, M. (2022): Differing silicon isotope compositions of sponge spicules from Arctic and North Atlantic shelf sediments. IBiS.
  • Anagnostou, E., Moffa Sanchez, P., Adey, W., Ries, J., Laukert, G., Williams, B. (2022): Potential causes and consequences of variability in Arctic and Labrador surface water temperature and pH during the last millennium from coralline algae. International Conference on Paleoceanography 14 (ICP14).
  • Zhuravleva, A., Bauch, H. A., Frank, M., Hathorne, Ed C., Laukert, G., Filippova. A., Kienast, M. (2022): Changes in intermediate water circulation in the tropical North Atlantic during the Last Interglacial. Goldschmidt Conference.
  • Laukert, G., Bauch, D., Damm, E., Rabe, B., Kienast, S. S., Hathorne, E., Vredenborg, M., Krumpen, T., Tippenhauer, S., Simões Pereira, P., D’Angelo, A., Nomura, D. (2022): On the origin of freshwater and its potential influence on biology and biogeochemical cycles in sea ice and the upper ocean during the MOSAiC drift campaign. 1st MOSAiC Science Conference.
  • Laukert, G., Kienast, S. S., Horner, T., Doering, K., Grasse, P., Bauch, D., Frank, M., Huhn, O., Mertens, C. (2022): East Greenland’s rising impact on the marine silicon cycle constrained by silicon isotopes. Goldschmidt Conference.
  • Laukert, G., Grasse, P., Novikhin, A., Povazhnyi, P., Doering, K., Hölemann, J., Janout, M., Bauch, D., Kassens, H., Frank, M. (2022): Exploring the effects of potential large-scale hydrographic and biological changes in the Laptev Sea on future nutrient bioavailability in the Transpolar Drift. ASOF Meeting.
  • Invited: Laukert, G. (2021): A provenance tracer journey through the Atlantic sector of the Arctic Ocean. Department Seminar, Dalhousie University.
  • Laukert, G., Grasse, P., Novikhin, A., Povazhny, V., Doering, K., Hölemann, J., Janout, M., Bauch, D., Kassens, H., Frank, M. (2021): Nutrient inputs, utilization and cycling in the Laptev Sea constrained by macronutrient concentrations and stable silicon isotopes. Goldschmidt Conference.
  • Invited: Laukert, G. (2021): Isotopic tracers of ocean circulation and biogeochemical processes in the Arctic Ocean. 7th ArcTrain Annual Meeting.
  • Laukert, G., Grasse, P., Novikhin, A., Povazhnyi, V., Doering, K., Hölemann, J., Janout, M., Bauch, D., Kassens, H., Frank, M. (2021): The Laptev Sea as a major source region of nutrients to the Transpolar Drift. Closing workshop of project CATS.
  • Laukert, G., Bauch, D., Peeken, I., Krumpen, T., Werner, K., Hathorne, E., Gutjahr, M., Kassens, H., Frank, M.  (2020): Dissolved neodymium isotopes trace origin and spatiotemporal evolution of modern Arctic sea ice. EGU General Assembly.
  • Invited: Laukert, G. (2020): Transformation of Atlantic Water in the modern Arctic Ocean. Selected presentation to the new GEOMAR Director Katja Matthes. GEOMAR.
  • Laukert, G., Frank, M. (2020): Tracing Arctic waters with neodymium isotopes – pioneering efforts, current advancements and future challenges. ASOF Meeting.
  • Rahlf, P., Laukert, G., Hathorne, E. C., Frank, M. (2020): Congo River Influence on the Atlantic’s Rare Earth Element and Nd/Hf Isotope Distributions. Goldschmidt Conference.
  • Invited: Laukert, G. (2020): Tracing Arctic waters with neodymium isotopes – pioneering efforts, current advancements, and future challenges. ASOF Meeting.
  • Laukert, G., Bauch, D., Frank, M., Hathorne, E. C., Dreyer, J., Meulenbroek, K., Schaffer, J., Rabe, J., Paffrath, R., Pahnke, K., R. v. d. Loeff, M., Meyer, H., Graeve, M. (2019): Inconsistencies between Fram Strait water mass budget assessments based on radiogenic neodymium isotopes and nutrients. Goldschmidt Conference.
  • Paffrath, R., Bauch, D., Rutgers van der Loeff, M., Laukert, G., Pahnke, K. (2019): Water mass contributions to the central Arctic – New insights from rare earth elements and Nd isotopes. Goldschmidt Conference.
  • Rutgers van der Loeff, M., Stimac, I., Casacuberta, N., Wefing, A.-M., Laukert, G., Bauch, D., Paffrath, R., Provost, C., Karcher, M. (2019): Surface water changes during transit from North Pole to Fram Strait. Goldschmidt Conference.
  • Laukert, G., Grasse, P., Doering, K., Novikhin, A., Povazhny, V., Frank, M., Kassens, H. (2019): Spatial and temporal variability in supply, transport and utilization of silicate in the Laptev Sea based on dissolved stable silicon isotopes. ASSW.
  • Laukert, G., Grasse, P., Doering, K., Frank, M., Novikhin, A., Povazhny, V., Kassens, H. (2019): Constraints on the silicon cycle in the Siberian Shelf Seas. Gordon Research Conference.
  • Laukert, G., Dreyer, J., Frank, M., Hathorne, E.C., Meulenbroek, K. (2018): Greenland-sourced freshwater traced on the North-East Greenland Shelf with radiogenic neodymium isotopes and rare earth elements. Goldschmidt Conference.
  • Janout, M., Hölemann, J., Bauch, D., Laukert, G., Piepenburg, D., Waite, A., Martinov, F., Novikhin, A., Povashny, V. (2018): The Laptev Sea region of freshwater influence: Oceanography and ecosystem implications. EGU General Assembly.
  • Laukert, G., Dreyer, J., Frank, M., Hathorne, E.C., Meulenbroek, K. (2018): Greenland-sourced freshwater traced on the NE Greenland Shelf with neodymium isotopes and rare earth elements. Goldschmidt Conference.
  • Laukert, G., Frank, M., Dreyer, J., Rabe, B., Bauch, D., von Appen, W.-J. (2018): Interannual variability of modern Fram Strait outflow revisited. POLAR Conference, Davos.
  • Laukert, G., Frank, M., Hathorne, E. C., Siebert, C., Cao, Z. (2018): The dissolved stable barium isotope distribution in the Fram Strait, Arctic Ocean. Ocean Sciences Meeting.
  • Laukert, G., Frank, M., Hathorne, E. C., Krumpen, T., Werner, K., Peeken, I. (2017): Tracing the origin of Arctic sea ice and freshwater by neodymium isotopes and rare earth elements. Goldschmidt Conference.
  • Laukert, G. (2017): Task 3A – Mechanisms controlling the distribution of nutrients in the Laptev Sea (TRANSDRIFT XXIV and XXV). Kickoff Workshop of The Changing Arctic Transpolar System – CATS.
  • Laukert, G., Frank, M., Hathorne, E. C., Bauch, D., Wegner, C., Kassens, H., Timokhov, L. (2016): Dissolved Nd isotope and REE distributions trace interannual variability of water mass mixing and water-sediment interaction in the Laptev Sea. Goldschmidt Conference.
  • Laukert, G., Frank, M., Hathorne, E. C., Wegner, C., Bauch, D., Kassens, H. and Timokhov, L. A. (2016): Water mass provenance and mixing in the Laptev Sea based on dissolved Nd isotopes and REE distributions. Workshop: Biogeochemical Studies in the Siberian Shelf Seas.
  • Laukert, G., Frank, M., Hathorne, E. C., Bauch, D., Wegner, C., Andersen, N., Zieringer, M., Kassens, H. and Timokhov, L. A. (2016): Water mass provenance and mixing at Fram Strait and in the Laptev Sea based on dissolved Nd isotopes and REE distributions. 11. Workshop on Russian-German Cooperation: Laptev Sea System – The Transpolar System of the Arctic Ocean.
  • Petrova, M., Frank, M., Kuznetsov, V. and Laukert, G. (2016): Neodymium isotopes and rare earth element distribution in the Barents Sea, Arctic Ocean. 11. Workshop on Russian-German Cooperation: Laptev Sea System – The Transpolar System of the Arctic Ocean.
  • Wegner, C., Hölemann, J., Janout, M., Bauch, D., Laukert, G., Frank, M., Krumpen, T., Selyuzhenok, V., Novikhin, A., Polyakova, Y., Kryukova, I., Kassens, H. and Timokhov, L. A. (2016): Transpolar matter fluxes. 11. Workshop on Russian-German Cooperation: Laptev Sea System – The Transpolar System of the Arctic Ocean.
  • Laukert, G., Frank, M., Hathorne, E. C., Wegner, C., Kassens, H. (2015): Understanding mechanisms controlling the Arctic environment in the Laptev Sea – Implications from Nd isotopes and rare earth elements. ASSW.
  • Laukert, G., Frank, M., Hathorne, E. C., Bauch, D., Wegner, C. and Kassens, H. (2015): What can Nd isotopes and REEs tell us about the water mass distribution in the Eurasian Arctic Ocean? 6. Early Career Scientists Conference for Marine and Climate Research.
  • Laukert, G., Frank, M., Hathorne, E. C., Bauch, D., Wegner, C., Cao, Z., Zieringer, M., Andersen, N., Kassens, H. (2014): Water mass provenance and mixing in the Fram Strait, Arctic Ocean – Multi-proxy evidence from dissolved Nd isotopes, REEs, Ba, nutrients, and δ18O. AGU Fall Meeting.
  • Schmidt, R.B., von der Handt, A., Grimm, C., Laukert, G., Mojica, J. (2012): Petrology of the Alto Condoto ultramafic-mafic complex, Colombia. European Mineralogical Conference.
  • Grimm, C., von der Handt, A., Schmidt, R.B., Laukert, G., Mojica, J. (2012): Petrology of the mafic-ultramafic Viravira complex, Colombia: Fragments of an Alaskan-type intrusion. European Mineralogical Conference.
  • Laukert, G., von der Handt, A., Hellebrand, E., Snow, J. (2011): Pyroxenites from Lena Trough (Arctic Ocean) – High pressure reactive melt stagnation. AGU Fall Meeting.
  • Von der Handt, A., Hellebrand, E., Laukert, G., Schmidt, R., Snow, J. (2011): Melt stagnation in the upper mantle and lower crust at slow- to ultraslow-spreading ridges. AGU Fall Meeting.
  • Laukert, G., von der Handt, A., Hellebrand, E., Snow, J. and Hoppe, P. (2011): Abyssal pyroxenites from the ultraslow-spreading Lena Trough – Reactive melt stagnation at high pressures. Science Days, University of Freiburg.
  • Laukert, G., Müller-Sigmund H., Danilewsky A. and Gieré R. (2008): Mineralization of rare-earth pegmatites from Norway and Sweden. Science Days, University of Freiburg.