since 2015 : Professor at the University of Toulouse ; Researcher at LEGOS, Toulouse, France 2003-2015 : Lecturer at the University of Toulouse ; Researcher at LEGOS, Toulouse, France 2003 : Postdoctoral Fellow, University of Edinburgh, Scotland (Marie Curie Fellowship) 2002 : Postdoctoral Fellow, Woods Hole Oceanographic Institution, USA (Lavoisier Fellowship) 1998-2001 : PhD Thesis at LSCE, Gif-sur-Yvette, France (CEA Fellowship)
Marine Geochemistry ; Oceanography ; Environmental studies ; Paleoceanography Use of radionuclides (U-Th series and artificial radionuclides) as tracers and dating tools Radium isotopes and actinium : 226Ra & 228Ra : tracer of water masses; vertical and horizontal mixing in the ocean ; dating of marine sediments and oceanic processes : 223Ra & 224Ra : rates of submarine groundwater discharge in coastal waters; mixing in the ocean; 227Ac : tracer of water masses; transport rates in the deep-sea, upwelling velocities Other radionuclides : 210Pb, 7Be, 228Th, 234Th, 137Cs, 241Am
Responsable de l’équipe TIM, Toulouse Isotopie Marine du LEGOS Responsable du laboratoire souterrain d’analyse des faibles radioactivités LAFARA, https://lafara.obs-mip.fr/
Léon M., van Beek P., Scholten J., Moore W., Souhaut M., DeOliveira J., Jeandel C., Seyler P., Jouanno J., Use of 223Ra and 224Ra as chronometers to estimate the residence time of Amazon waters on the Brazilian continental shelf, submitted to Limnology & Oceanography Le Roy E., van Beek P., Lacan F., Sanial V., Souhaut M., Charette M., Henderson P., The distribution of 227Ac along the GEOVIDE section, submitted to Marine Chemistry Rodellas V., Stieglitz T., Tamborski J., van Beek P., Andrisoa A., Cook P., 2021. Conceptual uncertainties in groundwater and porewater fluxes estimated by radon and radium mass balances, Limnology & Oceanography 9999, 1–19. Mangeret A., Reyss J.-L., Seder-Colomina M., Stettena L., Morin G., Thouvenot A., Souhaut M., van Beek P., 2020. Early diagenesis of radium 226 and radium 228 in lacustrine sediments influenced by former mining sites, Journal of Environmental Radioactivity 222, 106324. Tamborski J., van Beek P., Conan P., Pujo-Pay M., Odobel C., Ghiglione J.-F., Seidel J.-L., Arfib B., Diego-Feliu M., Garcia-Orellana J., Szafran A., Souhaut M., 2020. Submarine karstic springs as a source of nutrients and bioactive trace metals for the oligotrophic Northwest Mediterranean Sea, Science of the Total Environment 732, 139106, https://doi.org/10.1016/j.scitotenv.2020.139106. Diego Feliu M., Rodellas V., Alorda-Kleinglass A., Tamborski J., van Beek P., Heins L., Bruach J.M., Arnold R., Garcia-Orellana J., 2020. Guidelines and limits for the quantification of Ra isotopes and related radionuclides with the Radium Delayed Coincidence Counter (RaDeCC). Journal of Geophysical Research: Oceans, 125, e2019JC015544. https://doi.org/10.1029/2019JC015544 Bejannin S., Tamborski J.J., van Beek P., Souhaut M., Stieglitz T., Radakovitch O., Claude C., Conan P., Pujo-Pay M., Crispi O., Le Roy E., Estournel C., 2020. Nutrient fluxes associated with submarine groundwater discharge from karstic coastal aquifers (Côte Bleue, French Mediterranean coastline), Front. Environ. Sci. 7:205. doi: 10.3389/fenvs.2019.00205. Tapia J., Audry S., van Beek P., 2019. Natural and anthropogenic controls on particulate metal(loid) deposition in Bolivian highland sediments, Lake Uru Uru (Bolivia), The Holocene 1–13, DOI: 10.1177/0959683619887425. El Zrelli R., Rabaoui L., van Beek P., Castet S., Souhaut M., Grégoire M., Courjault-Radé P., 2019. Natural radioactivity and radiation hazard assessment of industrial wastes from the coastal phosphate treatment plants of Gabes (Tunisia, Southern Mediterranean Sea), Marine Pollution Bulletin 146 (2019) 454–461, DOI: 10.1016/j.marpolbul.2019.06.075 Monnin C., Tamborski J., Bejannin S., Souhaut M., Roques M., Olivier P., van Beek P., Freshening of a Coastal Karst Aquifer Revealed by the Temporal Changes in a Spring Water Composition (La Palme, Southern France), Hydrology 2019, 6, 45; doi:10.3390/hydrology6020045. Le Roy E., Sanial V., Lacan F., van Beek P., Souhaut M., Charette M.A., Henderson P.B., 2019. Insight into the measurement of dissolved 227Ac in seawater using radium delayed coincidence counter, Marine Chemistry 212, 64-73. doi.org/10.1016/j.marchem.2019.04.002 Tamborski J.J., van Beek P., Rodellas V., Monnin C., Bergsma E., Stieglitz T., Heilbrun C., Cochran J.K., Charbonnier C., Anschutz P., Bejannin S., Beck A., 2019. Temporal variability of lagoon-sea water exchange and seawater circulation through a Mediterranean barrier beach, Limnology and Oceanography 00, 1–22. Tamborski J.J., Bejaninn S., Garcia-Orellana J., Souhaut M., Charbonnier C., Anschutz P., Pujo-Pay M., Conan P., Crispi O., Monnin C., Stieglitz T., Rodellas V., Andrisoa A., Claude C., van Beek P, 2018. A comparison between water circulation and terrestrially-driven dissolved silica fluxes to the Mediterranean Sea traced using radium isotopes. Geochimica et Cosmochimica Acta 238: 496-515. 10.1016/j.gca.2018.07.022. Rodellas V., Stieglitz T. C., Andrisoa A., Cook P. G., Raimbault P., Tamborski J. J., van Beek P. and Radakovitch O., 2018. Groundwater-driven nutrient inputs to coastal lagoons: The relevance of lagoon water recirculation as a conveyor of dissolved nutrients. Science of the Total Environment 642: 764-780. 10.1016/j.scitotenv.2018.06.095. Grenier M., E. Garcia-Solsona, N. Lemaitre, T. W. Trull, V. Bouvier, P. Nonnotte, P. van Beek, M. Souhaut, F. Lacan, C. Jeandel, in press. Differentiating lithogenic supplies, water mass transport and biological processes on and off the Kerguelen Plateau using rare earth element concentrations and neodymium isotopic compositions, Frontiers special issue REE Marine Geochemistry in the 21st Century: A Tribute to the Pioneering Research of Henry Elderfield, 1943–2016. Sarthou G., et al., 2018. Introduction to the French GEOTRACES North Atlantic transect (GA01): GEOVIDE cruise. Biogeosciences Discuss., https://doi.org/10.5194/bg-2018-312,https://doi.org/10.5194/bg-2018-312, 2018. El Zrelli R., Rabaoui L., Daghbouj N., Abda H., Castet S., Josse C., van Beek P., Souhaut M., Michel S., Bejaoui N. and Courjault-Rade P., 2018. Characterization of phosphate rock and phosphogypsum from Gabes phosphate fertilizer factories (SE Tunisia): high mining potential and implications for environmental protection. Environmental Science and Pollution Research 25(15): 14690-14702. 10.1007/s11356-018-1648-4. Schlitzer et al., 2018. The GEOTRACES Intermediate Data Product 2017, 2017. Chemical Geology 493: 210-223. 10.1016/j.chemgeo.2018.05.040. Le Roy E., Sanial V., Charette M.A., van Beek P., Lacan F., Jacquet S., Henderson P.B., Souhaut M., García-Ibáñez M.I., Jeandel C., Pérez F.F., 2017. Study of the 226Ra-Ba relationship along the GA01-GEOTRACES section in the North Atlantic, Biogeosciences 15(9): 3027-3048. 10.5194/bg-15-3027-2018. Bejannin S., van Beek P., Stieglitz T., Souhaut M., Tamborski J., 2017. Combining airborne thermal infrared images and radium isotopes to study submarine groundwater discharge along the French Mediterranean coastline, Journal of Hydrology : Regional studies 13, 72-90. Ganachaud A, Cravatte S, Sprintall J, Germineaud C, Alberty M, Jeandel C, Eldin G., Metzl N., Bonnet S., Benavides M., Heimburger L.-E., Lefèvre J., Michael S., Resing J., Quéroué F., Sarthou G., Rodier M., Berthelot H., Baurand F., Grelet J., Hasegawa T., Kessler W., Kilepak M., Lacan F., Privat E., Send U., van Beek P., Souhaut M., Sonke J.E., 2017. The Solomon Sea: its circulation, chemistry, geochemistry and biology explored during two oceanographic cruises. Elem Sci Anth. 2017;5:33. DOI: http://doi.org/10.1525/elementa.221 Kipp L., Sanial V., Henderson P., van Beek P., Reyss J.-L., Hammond D., Moore W., Charette M., 2017. Radium isotopes as tracers of hydrothermal inputs and neutrally buoyant plume dynamics in the deep ocean, GEOTRACES Special Issue, Marine Chemistry 201: 51-65. 10.1016/j.marchem.2017.06.011. Sanial V, Kipp L., Henderson P.B., van Beek P., J-L. Reyss, D.E. Hammond, Moore W.S. and Charette M.A., 2017. Radium-228 as a tracer of trace element inputs from the Peruvian continental margin, GEOTRACES Special Issue, Marine Chemistry 201: 20-34. 10.1016/j.marchem.2017.05.008. Thiebault T., Chassiot L., Fougère L., Destandau E., Simonneau A., van Beek P., Souhaut M., Chapron E., 2017, Record of pharmaceutical products in river sediments: A powerful tool to assess the environmental impact of urban management ?, Anthropocene 18, 47–56. Li C., Le Roux G., Sonke J., van Beek P., Souhaut M., Van der Putten N., De Vleeschouwer F., 2017. Recent 210Pb, 137Cs and 241Am accumulation in an ombrotrophic peatland from Amsterdam Island (Southern Indian Ocean), Journal of Environmental Radioactivity 175-176, 164-199. Enrico M., Le Roux G., Heimbürger L.-E., van Beek P., Souhaut M., Chmeleff J., Sonke J., 2017. Holocene atmospheric mercury levels reconstructed from peat bog mercury stable isotopes, Environmental Science and Technology 51 (11), pp 5899–5906. Shelley R. U., Roca-Martí M., Castrillejo M., Sanial V., Masqué P., Landing W. M., van Beek P., Planquette H., Sarthou G., 2017. Quantification of trace element atmospheric deposition fluxes to the Atlantic Ocean ( > 40°N; GEOVIDE, GEOTRACES GA01) during spring 2014, Deep–Sea Research Part I 119, 34-49. Pham M.K., van Beek P., Carvalho F.P., Chamizo E., Degering D., Engeler C., Gascó C., Gurriaran R., Hanley O., Harms A.V., Herrmann J., Hult M., Ikeuchi Y., Ilchmann C., Kanisch G., Kis-Benedek G., Kloster M., Laubenstein M., Llaurado M., Mas J.L., Nakano M., Nielsen S.P., Osvath I., Povinec P.P., Rieth U., Schikowski J., Smedley P.A., Suplinska M., Sýkora I., Tarjan S., Varga B., Vasileva E., Zalewska T., Zhou W., 2016. Certified reference materials for radionuclides in Bikini Atoll sediment (IAEA-410) and Pacific Ocean sediment (IAEA-412), Applied Radiation and Isotopes 109. doi: 10.1016/j.apradiso.2015.11.041. Masson O., Bieringer J., Brattich E., Dalheimer A., Estier S., Penev I., Ringer W., Steinkopff T., Steinmann P., Tositti L., van Beek P., Vismes-Ott A., 2016. Variation in airborne 134Cs, 137Cs, particulate 131I and 7Be maximum activities at high-altitude European locations after the arrival of Fukushima-labeled air masses, Journal of Environmental Radioactivity 162-163, 14-22. Rousseau T.C.C., Sonke J.E., Chmeleff J., van Beek P., Souhaut M., Boaventura G., Seyler P., Jeandel C., 2015. Rapid neodymium release to marine waters from lithogenic sediments in the Amazon estuary, Nature Communications DOI: 10.1038/ncomms8592. Sanial V., van Beek P., Lansard B., Souhaut M., Kestenare E., d’Ovidio F., Blain S., 2015. Use of Ra isotopes to deduce rapid transfer of sediment-derived inputs off Kerguelen, Biogeosciences, 12, 1415-1430, doi:10.5194/bg-12-1415-2015 Koch-Larrouy A., Atmadipoera A., van Beek P., Madec G., Aucan J., Lyard F., Grelet J., Souhaut M., 2015. Estimate of tidal mixing in the Indonesian archipelago from multidisciplinary data, Deep-Sea Research I 106, 136–153. Cuvier A., Panza F., Pourcelot L., Foissard B., Cagnat X., Prunier J., van Beek P., Souhaut M., 2015. Le Roux G., Accumulation and sources of U decay chain daughters around a minor closed uranium mine, soumis à Journal of Environmental Radioactivity 149, 110-120 Sanial V., van Beek P., Lansard B., d’Ovidio F. , Kestenare E., Souhaut M., Zhou M., Blain S., 2014. Study of the phytoplankton plume dynamics off the Crozet Islands (Southern Ocean): A geochemical-physical coupled approach. Journal of Geophysical Research-Oceans 119, doi:10.1002/2013JC009305 Geibert W., Rodellas V., Annett A., van Beek P., Garcia-Orellana J., Hsieh Y.-T., Masque P., 2013. 226Ra determination via the rate of 222Rn ingrowth with the Radium Delayed Coincidence Counter (RaDeCC), Limnology and Oceanography : Methods 11, 2013, 594-603 Stieglitz T., van Beek P., Souhaut M., Cook P., 2013. Groundwater discharge Karstic groundwater discharge and seawater recirculation through sediments in shallow coastal Mediterranean lagoons, determined from water, salt and radon budgets, Marine Chemistry 156, 73-84 Hsieh, Y.-T., Geibert, W., van Beek, P., Stahl, H., Aleynik, D., and Henderson, G.M., 2013. Using the radium quartet (228Ra, 226Ra, 224Ra, and 223Ra) to estimate water mixing and radium inputs in Loch Etive, Scotland. Limnology and Oceanography 58: 1089-1102 Annett A., Henley S., van Beek P., Souhaut M., Ganeshram R., Venables H., Meredith M., Geibert W., 2013. Use of radium isotopes to estimate mixing rates and trace sediment inputs to surface waters in northern Marguerite Bay (Antarctic Peninsula), Antarctic Science 25(3), 445–456, doi:10.1017/S0954102012000892 van Beek P., Souhaut M., Lansard B., Bourquin M., Reyss J-L., Jean P., von Ballmoos P., 2013. LAFARA : A new underground laboratory in the French Pyrénées for low-background gamma spectrometry, Journal of Environmental Radioactivity 116, 152-158 Subetto D.A., Shevchenko V.P., Ludikova A.V., Kuznetsov D.D., Sapelko T.V., Lisitsyn A.P., Evzerov V.Y., van Beek P., Souhaut M., Subetto G.D., 2013. Chronology of isolation of the Solovetskii archipelago lakes and current rates of lake sedimentation, Doklady Earth Sciences DOI:10.1134/S1028334X12090140 Evrard O., van Beek P., Gateuille D., Pont V., Lefèvre I., Lansard B., P. Bonté, 2012. Evidence of the radioactive fallout in France due to the Fukushima nuclear accident, Journal of Environmental Radioactivity 114, Volume spécial Fukushima, 54-60 Venchiarutti C., Roy-Barman M., Freydier R., van Beek P., Souhaut M., Jeandel C., 2011. Influence of intense scavenging on Pa-Th fractionation in the wake of Kerguelen Island (Southern Ocean), Biogeosciences 8, 3187–3201 Bourquin M., van Beek P., Reyss J.L., Riotte J. and Freydier R., 2011. Determination of 226Ra concentrations in seawater and suspended particles (NW Pacific) using MC-ICP-MS, Marine Chemistry 126, 132–138 Jeandel C., Venchiarutti C., Bourquin M., Pradoux C. Lacan F., van Beek P., Riotte, J., 2011. Single Column Sequential Extraction of Ra, Nd, Th, Pa and U from a Natural Sample, Geostandards and Geoanalytical Research, doi: 10.1111/j.1751-908X.2010.00087.x van Beek P., Souhaut M., Reyss J-L., 2010. Measuring the radium quartet (226Ra, 228Ra, 224Ra, 223Ra) in water samples using gamma spectrometry, Journal of Environmental Radioactivity, 101, 521–529 van Beek P., Sternberg E., Reyss J.-L., Souhaut M., Robin, E., Jeandel C., 2009. 228Ra/226Ra and 226Ra/Ba ratios in the Western Mediterranean Sea: Barite formation and transport in the water column, Geochimica Cosmochimica Acta 73, 4720–4737 Bourquin M., van Beek P., Reyss J-L., Souhaut M., Charette M., Jeandel C., 2008. Testing methods to separate radium from large volumes of seawater, Marine Chemistry, 109, 226-237 van Beek P., Bourquin M., Reyss J-L., Souhaut M., M. Charrette, Jeandel C., 2008. Radium isotopes to investigate the water mass pathways on the Kerguelen plateau, Southern Ocean, Deep-Sea Research Part II-Topical Studies in Oceanography, 55, 622-637 Blain S., B. Quéguiner, L. Armand, S. Belviso, B. Bombled, L. Bopp, A. Bowie, C. Brunet, C. Brussaard, F. Carlotti, U. Christaki, A. Corbière, I. Durand, F. Ebersbach, J-L. Fuda, N. Garcia, L. Gerringa, B. Griffiths, C. Guigue, C. Guillerm, S. Jacquet, C. Jeandel, P. Laan, D. Lefèvre, C. Lo Monaco, A. Malits, J. Mosseri, I. Obernosterer, Y-H. Park, M. Picheral, P. Pondaven, T. Remenyi, V. Sandroni, G. Sarthou, N. Savoye, L. Scouarnec, M. Souhaut, D. Thuiller, K. Timmermans, T. Trull, J. Uitz, P. van Beek, M. Veldhuis, D. Vincent, E. Viollier, L. Vong, T. Wagener, 2007. Effect of natural iron fertilization on carbon sequestration in the Southern Ocean, Nature 446, 1070 – 10 van Beek P., François R., Conte M., Reyss J.-L., Souhaut M., Charette M., 2007. 228Raex/226Raex and 226Raex/Ba ratios to track barite formation and transport in the water column, Geochimica Cosmochimica Acta 71, 71-86 van Beek P., Reyss J-L., DeMaster D., Paterne M., 2004. 226Ra-in marine barite : Relationship with carbonate dissolution and sediment focusing in the equatorial Pacific, Deep-Sea Research I 51, 235-261 Robin E, Rabouille C, Martinez G, Lefevre I, Reyss J-L, van Beek P, Jeandel C, 2003. Direct bio-Ba determination using SEM/EDS-ACC system : implication for barite preservation in marine sediments, Marine Chemistry 82 (3-4), 289-306. van Beek P., Reyss J.-L., Bonte P., Schmidt S., 2003. Sr/Ba in barite : a proxy of barite preservation in marine sediments ?, Marine Geology 199, 205-220 Schmidt S, van Weering T.C.E., Reyss J-L & van Beek P, 2002. Rapid deposition and reworking at the sea bed/ water interface over the NW Iberian Margin; seasonal and spatial trends, Progress in Oceanography 52, 331-348 van Beek P, Reyss J-L, Gersonde R, Paterne M, Rutgers van der Loeff M, Kuhn G, 2002. 226Ra in barite : Absolute dating of Holocene Southern Ocean sediments and reconstruction of sea-surface reservoir ages, Geology 30 (8), 731-734 van Beek P, Reyss J-L, 2001. 226Ra in marine barite : new constraints on supported 226Ra, Earth and Planetary Science Letters 187, 147-161
PI of MED-SGD (2016-2021; French funding Agency ANR Blanc, ANR-15-CE01-0004, 2016-2019, 642 919 €) : “Submarine Groundwater Discharge: A hidden source of chemical compounds at the land-ocean interface” Co-PI of SELECT (2016-19 ; FEDER European Union/ Région Occitanie Pyrénées-Méditerranée, 1 579 103 € ; PIs : P. van Beek/ M. Souhaut): Development of the LAFARA underground laboratory in the French Pyrénées « Sélection de matériaux « bas niveau » au laboratoire souterrain LAFARA pour la fabrication d’instruments et d’équipements de mesure nucléaire ultra-performants » ; https://lafara.obs-mip.fr/ SWINGS (French contribution to the GEOTRACES program), 2019-2023 (PIs: Hélène Planquette ; Catherine Jeandel), GEOTRACES section in the Indian sector of the Southern Ocean GEOVIDE (French contribution to the GEOTRACES program), 2014-16 (PIs: Géraldine Sarthou and Pascal Lherminier), section in the North Atlantic KEOPS-2, ANR-LEFE 2011-2013 (PI: S. Blain), KErguelen compared study of the Ocean and the Plateau in Surface water 2 SOLWARA, ANR-LEFE (PI: S. Cravatte, A. Ganachaud), Study of the Solomon Sea, Pacific Ocean AMANDES, ANR Blanc 2006-2008 (PI: C. Jeandel, P. Seyler) : Weathering and transport of elements at a crucial land-sea interface (Amazon estuary) KEOPS-1, ANR-LEFE 2005 (PI: S. Blain), KErguelen compared study of the Ocean and the Plateau in Surface water
University Paul Sabatier, Toulouse (All levels between Licence 1 and Master 2; 206 h per year on average) Institut National Polytechnique, Toulouse (Classe Préparatoire Polytechnique) University of Abomey-Calavi/ UNESCO Chair of Mathematics, Cotonou, Benin, since 2007 Participation to the Global Immersion Program organized by the University of Chongqing, China, July 2019; Lecture on “Climate: Past, Present and Future”