In the LSCE

– CEA researcher (emeritus), specialising in climate dynamics and archives, and LSCE communications correspondent (since 2007)


Thèmes: Paleoclimatology, Paleomagnetism


Birth : 02/05/1955 at Limoges , France


Ecole Normale Supérieure of Cachan (1975-1979).

Maîtrise de Physique, University of Paris Sud (1977).

DEA of Solid State Physics, University of Paris Sud-Orsay (1979)

Agregation in Physics (1978)

PhD Thesis, speciality Solid State Physics, Orsay France (1981)

Habilitation à diriger des recherches (1998)


1981-1984: Researcher assistant at the Paris VI University.

1984-1985: High school teacher (physics and chemistry) at Beauvais.

1985-1986: Teacher (physics and chemistry) in “Mathématiques Supérieures” level at Chambéry, France.

1986-2020 Researcher at the LSCE, “Climag” Team. Since 2007 also public relation of the LSCE

Since 2021: Emeritus researcher (scientific adviser to the LSCE)

– More than 80 publications in international or national scientific journals.

– Numerous scientific papers presented at international and national conferences.

– 8 oceanographic campaigns (coring of marine sediments) on board the Marion-Dufresne in the North Atlantic and in the southern Indian Ocean.
Head of mission for the “IndienSud 1” and “IndienSud 2” campaigns.

– 1 oceanographic sediment drilling campaign in the North Atlantic aboard the American vessel Joides Resolution (IODP-303).

Publications : papers in international peer reviewed journals

… full list: see


Jérome, D., Mazaud, A., Ribault, M., Beechgaard, D., Superconductivity in a synthetic organic conductor, (TMTSeF)2-PF6, J. Phys. Lettres, 41, L95-L98, 1980.

Mazaud, A., Galbrun, B., Azema, J., Enay, R., Fourcade, E., et Rasplus, L., Données magnétostratigraphiques sur le Jurassique supérieur et le Berriasien du NE des cordillières Béthiques, C.R. Acad. Sci. Paris, 302, série II n° 18, 1986.

Mazaud A., Laj C., de Sezez L., Verosub K.L., 15-Myr periodicity in the frequency of geomagnetic reversals since 100 Myr, Nature 304, 328-330, 1983.

Laj C., Guitton, S., Kissel, C. Mazaud A., Complex behavior of the geomagnetic field during three successive reversals, 11-12 m.y. B.P., J. Geophys. Res., 93, 11655-11666, 1988.

Mazaud A., Laj C., Simulation of geomagnetic polarity reversals by a model of interacting dipole sources, Earth Planet. Sci. Lett., 92, 299-306, 1989.

Paterne M., Labeyrie J., Guichard F., Mazaud A., Maitre F., Fluctuations of the campanian explosive volcanic activity (South Italy) during the past 190,000 years, as determined by marine tephrochronology, Earth and Planet. Sci. Lett.,166-174, 1990.

Tric E., Laj C., Jehanno C., Valet J.P., Kissel C., Mazaud A., Iaccarino S., High resolution record of the Upper Olduvai Transition from Po Valley (Italy) sediments: support for dipolar transition geometry? Phys. Earth Planet. Inter., 65, 319-336, 1991.

Laj C., Mazaud A., Weeks R., Fuller M., Herrero-Bervera E., Geomagnetic reversal paths, Nature (Scientific Correspondence) 351, 447, 1991.

Mazaud A., Laj C., Bard, E., Arnold, M. Tric, E. Geomagnetic field control of 14C production over the last 80 KY: implications for the radiocarbon time-scale, Geophys. Res. Lett., 18, 1885-1888, 1991.

Mazaud A., Laj C., The 15 m.y. geomagnetic reversal periodicity: a quantitative test, Earth Planet. Sci. Lett., 107, 689-696, 1991.

Mazaud A., Laj C., Bard E., Arnold M., Tric, E. A geomagnetic calibration of the radiocarbon time-scale, In: The Last Deglaciation : Absolute and Radiocarbon Chronologies, NATO/ASI Ser. E. Bard, W.S. Broecker Eds. (Springer Verlag,Berlin, 1992), 163-169, 1992.

Laj C., Mazaud A.,Weeks R., Fuller M., Herrero-Bervera E., Statistical assessement of the preferred longitudinal bands for recent geomagnetic reversal records, Geophys. Res. Lett., 19, 2003-2006, 1992.

Weeks R., Fuller M., Laj C., Mazaud A., Herrero-Bervera E. Sedimentary records of reversal transitions – magnetization smoothing artefct or geomagnetic field behaviour ?, Geophys. Res. Lett., 19, 2007-2010, 1992.

Laj C., Mazaud A.,Weeks R., Fuller M., Herrero-Bervera E., Geomagnetic reversal paths, Nature, (Scientific Correspondance), 359, 111-112.

Mazaud A., Laj C., Bender M. A geomagnetic chronology for Antarctic ice accumulation, Geophys. Res. Lett., 21, 337-340, 1994.

Zhu R.X., Zhou L.P., Laj C., Mazaud A., Ding Z.L., The Blake geomagnetic polarity episode recorded in Chinese loess. , Geophys. Res. Lett., 21, 697-700, 1994.

Zhu , Laj C., Mazaud A.., The Matuyama-Brunhes and Upper Jaramillo transitions recorded in a loess section at Weinan, north-central China, Earth Planet. Sci. Lett., 125, 143-158, 1994.

Weeks R.J., Laj C., Endignoux L., Mazaud A., Labeyrie L., Roberts A.P., Kissel C., Blanchard E., Normalised natural remanent magnetisation intensity during the last 240000 years in piston cores from the Central North Atlantic Ocean : geomagnetic field intensity of environmental signal ?, Phys. Earth Planet. Inter., 87, 213-229, 1995.

Mazaud A. ,An attempt at reconstructing the geomagnetic field at the core-mantle boundary during the Upper Olduvai polarity transition (1.66 Myear), ,Phys. Earth Planet. Inter., 90, 211-219, 1995.

Lehman B., Laj C., Kissel C., Mazaud A., Paterne M., Cortijo E., Labeyrie L., Relative changes of the geomagnetic field intensity during the last 280,000 years obtained from Piston Cores in the Acores Area, Phys. Earth Planet. Inter., 93, 269-284, 1996.

Mazaud A. ,Sawtooth variation in magnetic intensity profiles and delayed acquisition of magnetization in deep sea cores, Earth and Planet. Sci. Lett., 139, 379-386, 1996.

Laj C., Mazaud A. Duplessy J. C., Geomagnetic intensity and 14C abundance in the atmosphere and ocean during the last 50 kyr, Geophys. Res. Lett., 23, 2045-2048, 1996.

Love, J., Mazaud, A .,, A database for the Matuyama-Brunhes geomagnetic reversal, Phys. Earth Planet. Int.., 103, 207-245, 1997.

Kissel, C., Laj, C., Mazaud, A., Dokken, T, Magnetic anisotropy and environmental changes in two sedimentary cores from the Norwegian Sea and the North Atlantic, Earth and Planet. Sci. Lett., 164, 617-626, 1998.

Mazaud, A., and Channell, J.E.T, The top Olduvai polarity transition at ODP Site 983 (Iceland basin), Earth and Planet. Sci. Lett., 166, 1-13, 1999.

Laj, C., Kissel, C., Mazaud, A., Channell, J.E.T., Beer, J., North Atlantic paleointensity stack since 75 ka (NAPIS-75) and the duration of the Laschamp event, Phil. Trans. Royal Soc. London, 358, 1009-1025, 2000.

Mazaud, A., Vimeux, F., Jouzel, J., Short fluctuations in Antarctic isotope records: a link with cold events in the North Atlantic?, Earth and Planetary Science Letters, 177, 219-225, 2000.

Laj, C., Kissel, C., Mazaud, A., Michel, E., Muscheler, R., Beer, J., Geomagnetic Field Intensity, North Atlantic Deep Water Circulation and Atmospheric 14C during the last 50 kyr, Earth Planet. Sci. Lett., 200, 179-192, 2002.

Channell, J.E.T., Mazaud, A., Sullivan, P., Turner, S., Raymo, M. E., Geomagnetic excursions and paleointensities in the 0.9-2.15 Ma interval of the Matuyama chron at ODP Site 983 and 984 (Iceland Basin), J. Geophys. Res., 107 (B6) 10.1029/2001JB000491, 2002.

Mazaud, A., Sicre, M. A. , Ezat, U., Pichon, J. J., Duprat, J., Laj, C., Kissel, C., Beaufort, L., Michel, E., Turon, J. L., Geomagnetic assisted stratigraphy and SST changes in core MD94-103 (southern Indian Ocean): possible implications for North-South climatic relationships around H4, Earth Planet. Sci. Lett., 201, 159-170, 2002.

Brachfeld, S., Kissel, C. Laj, C., Mazaud, A., Viscous behavior in U-channels a function of translation speed and AF decay, Earth Planet. Sci. Lett., 145, 1-8, 2004.

Mazaud, A., User-friendly software for vector analysis of the magnetization of long sediment cores., Geochem. Geophys. Geosyst., doi:10.1029/2005GC001036, 2005.

Sicre, M.A., Labeyrie, L., Ezat, U., Duprat, J, Turon, J.L., Schmidt, S., Michel, E. and Mazaud, A., Mid-latitude Southern Indian Ocean response to Northern Hemisphere Heinrich events, Earth Planet. Sci. Lett., 240, 724-731, 2005.

Sicre, M.A., Labeyrie, L., Ezat, U., Duprat, J., Mazaud A., and. Turon, J.L, A 27 ka terrestrial biomarker record in the Southern Indian Ocean, Geochem. Geophys. Geosyst., doi:10.1029/2005GC001234, 2006.

Mazaud A., A first-order correction to minimize environmental influence in sedimentary records of relative paleointensity of the geomagnetic field, Geochem. Geophys. Geosyst., doi:10.1029/2006GC001257, 2006.

A. Mazaud, C. Kissel, C. Laj, M.A. Sicre, E. Michel C., J.L. Turon, Magnetic mineral deposition in mid-latitude South Indian Ocean cores during MIS3: implications for ACC-CDW strength and connections with the northern hemisphere and with central Antarctica in press G-cubed.

A. Mazaud, E. Michel, F. Dewilde, J.L. Turo, Variations of the Antarctic Circumpolar Current intensity during the past 500 thousands years, Geochem. Geophys. Geosyst., 11, Q08007, doi:10.1029/2010GC003033.

A. Mazaud, J. E. T. Channell, J. S. Stoner, Relative paleointensity and environmental magnetism since 1.2 Ma at IODP Site U1305 (Eirik Drift, NW Atlantic), Earth Planet. Sci. Lett.,357–358 (2012) 137–144.

J.S. Stoner , J.E.T. Channell, A. Mazaud, S.E. Strano, C. Xuan, The influence of high-latitude flux lobes on the Holocene paleomagnetic record of IODP Site U1305 and the northern North Atlantic, Geochem. Geophys. Geosyst., 14, doi:10.1002/ggge.20272.

J.E.T. Channell, J.D. Wright, A. Mazaud, J.S. Stoner, Age through tandem correlation of Quaternary relative paleointensity (RPI) and oxygen isotope data at IODP Site U1306 (Eirik Drift, SW Greenland), Quaternary Science Reviews, Quaternary Science Reviews, 88, 135-146 (2014).

A. Mazaud, J.E.T. Channell, J.S. Stoner, « The paleomagnetic record at IODP Site U1307 back to 2.2 Ma (Eirik Drift, off south Greenland) », Earth and Planetary Science Letters 429 (2015) 82–89.

Gottschalk, J., Szidat, S., Michel, E., Mazaud, A., Salazar, G.,Battaglia, M., Lippold, J., Jaccard, S.L., Radiocarbon measurements of small-size foraminifer samples with the accelerator mass spectrometer (AMS) MIni-CArbon DAting System (MICADAS) at the University of Bern: implications for paleoclimate reconstructions, Radiocarbon, 2018, p. 1–23, DOI:10.1017/RDC.2018.3.

Studer, A.S., Sigman, D.M., Marti?nez-Garci?a, A., Tho?le, L., Michel, E., Jaccard, S.., Lippold, J.A., Mazaud, A., Wang, X.T., Robinson, L.F, Adkins, J.F., and Gerald H. Haug, Increased nutrient supply to the Southern Ocean during the Holocene and implications for atmospheric CO2 levels, Nature Geoscience,

Thöle, L.M., Amsler H.E., Moretti S., Auderset A., Gilgannon J., Lippold J., Vogel H., Crosta X., Mazaud A., Michel, E., Martinez-Garcia A., Jaccard S.L., 2019. Glacial-interglacial dust and export production records from the Southern Indian Ocean. Earth Planet. Sci. Lett. 525, 115716. DOI PDF.

Gottschalk, J., Michel, E., Thöle, L.M. , Hasenfratz, A.P, Schmid, N., Butzin, M., Mazaud, A., Martínez-García, A., Szidat, S., & Jaccard, S.L., Glacial heterogeneity in Southern Ocean carbon storage abated by fast South Indian deglacial carbon release. Nat Commun 11, 6192 (2020).

Civel-Mazens, M., Crosta X., Cortese G., Michel E., Mazaud A., Ther, O., Ikehara M., Itaki T., Impact of the Agulhas Return Current on the oceanography of the Kerguelen Plateau region, Southern Ocean, over the last 40 kyrs, Quaternary Science Reviews 251 (2021) 106711,

Civel-Mazens, M., Crosta X., Cortese G., Michel E., Mazaud A., Ther, O., Ikehara M., Itaki T., Antarctic Polar Front migrations in the Kerguelen Plateau region, Southern Ocean, over the past 360 kyrs, Global and Planetary Change 202 (2021) 103526,

Y. Liu, C. Kissel, A. Mazaud, Y. Pan, J.Li, Glacial-Interglacial Circulation and Climatic Changes in the South Indian Ocean (Kerguelen Plateau Region) Recorded by Detrital and Biogenic Magnetic Minerals, Journal of Geophysical Research: Solid Earth (2023),

X. Ai, L. Thöle, A. Auderset, M. Schmitt, S. Moretti, A. Studer, E. Michel, M. Wegmann, A. Mazaud, P. Bijl, D. Sigman, A. Martinez-Garcia, and S.L. Jaccard, “The southward migration of the Antarctic Circumpolar Current enhanced oceanic degassing of carbon dioxide during the last two deglaciations”, Nature Communications Earth & Environment, in press (2024).

Other publications

Mazaud, A., Supraconductivité organique dans le composé (TMTSeF)2-PF6, Thèse de 3ème cycle, Université Paris XI-Orsay, 1981

Laj, C., Mazaud, A., Les inversions du champ magnétique terrestre, Clefs-CEA, 1-15, Oct. 1986.

Laj, C., Mazaud, A., Datation au 14C, Pour la Science n° 178,17-18, 1992.

Laj, C., Mazaud, A., Les inversions du champ magnétique terrestre, Images de la Physique 1993 (CNRS), 119-125, 1994.

Mazaud, A., Laj, C., Le chaos dans la dynamo terrestre, Pour la Science, numéro Hors Série “Le Chaos”, 91-92, 1995.

Mazaud, A., Laj C., Les inversions du champ magnétique terrestre et la structure passée de l’intérieur de notre planète, Pour la Science, numéro Hors Série “Le Chaos”, 91-92, 1995.

Laj, C., Mazaud, A., Duplessy, J. C., Datation par le carbone 14 et champ magnétique., Pour la Science, n° spécial “Radioactivité et ses applications”, 1996 et 2004.

Mazaud, A., Geomagnetic polarity reversal, The Encyclopedia of Geomagnetism and Paleomagnetism, Editions Springer, in press.

Les Rapports des Campagnes à la Mer: “MD185/INDIEN SUD-1 à bord du R/V Marion Dufresne”, Institut Polaire Français Paul-Emile Victor Ref: OCE 2013/01.

Les Rapports des Campagnes à la Mer: “MD189/INDIEN SUD-2 à bord du R/V Marion Dufresne”, Institut Polaire Français Paul-Emile Victor Ref: OCE 2015/02.

A. Mazaud, « Quelques expériences simples sur l’autre problème du CO2 : l’acidification des océans », La Météorologie – n° 90 – août 2015


– Numerous conferences and events to disseminate knowledge (high schools, schools, universities, institutions, associations, etc.).

– Radio and TV interviews (BFM-Tv, FranceInfo-Tv, LCI, radio stations, etc.).

etc ..


– Winner of the 2021 CNRS Medal for Scientific Mediation (ClimaTicTac team, a cooperative board game designed to provide a fun way to understand the challenges of climate change).

– Member of the American Geophysical Union

– Volunteer treasurer of a non-profit organization, ZEBUNET (sustainable development in poor countries).

Publication list Mazaud-2023.doc