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Henri Samuel

Henri Samuel
Main information
Researcher / Professor
CNRS Research Scientist / Chargé de Recherche au CNRS
Planetology and Space Sciences
Bât. Lamarck A - 35 rue Hélène Brion 75205 PARIS CEDEX 13

Content / Work

I study the dynamic evolution of terrestrial planets. To do so, I rely on simple analytical approaches or on high performance computational fluid dynamics experiments to model the exchanges of heat and of chemical species between the different envelopes that may constitute planetary bodies: metallic core, silicate enveloppes, and atmosphere. My investigations consist in characterising the dynamics of different systems of interest e.g., long-term solid state or short-term liquid state convection in planetary interiors (Fig. 1 & 3), fragmentation of iron drops or diapirs (Fig. 2) or volatile outgassing  (Fig. 3) in planetary magma oceans. 
These physical systems involve a variety of scales ranging from millimetres to thousands of km for space and from seconds to billions of years for time. Such characterizations serve as constraints to better interpret the data collected by space missions (seismic, gravimetric, topographic, magnetic or geodetic…), and to better reconstruct the thermal and chemical histories of planets.




Studies of modern-day volcanic processes have revealed material surviving from the Hadean Eon, which occurred between 4.6 and 4 billion years ago. The...


Drilleau Mélanie, Samuel Henri, Garcia Raphaël F, Rivoldini Attilio, Perrin Clément, Wieczorek Mark, Lognonné Philippe, Banerdt William B. Constraints on Lateral Variations of Martian Crustal Thickness From Seismological and Gravity Field Measurements. Geophysical Research Letters, American Geophysical Union, 2024, 51. <10.1029/2023gl105701>

Samuel Henri, Drilleau Mélanie, Rivoldini Attilio, Xu Zongbo, Huang Quancheng, Garcia Raphaël F, Lekić Vedran, Irving Jessica C E, Badro James, Lognonné Philippe H, Connolly James a D, Kawamura Taichi, Gudkova Tamara, Banerdt William B. Geophysical evidence for an enriched molten silicate layer above Mars’s core. Nature, Nature Publishing Group, 26 October 2023, 622. <10.1038/s41586-023-06601-8>

Salvador Arnaud, Samuel Henri. Convective outgassing efficiency in planetary magma oceans: Insights from computational fluid dynamics. Icarus, 2023, 390. <10.1016/j.icarus.2022.115265>

Pou L., Nimmo F., Rivoldini A., Khan A., Bagheri A., Gray T., Samuel H., Lognonné Philippe, Plesa A.‐c., Gudkova T., Giardini D.. Tidal Constraints on the Martian Interior. Journal of Geophysical Research. Planets, Wiley-Blackwell, November 2022, 127. <10.1029/2022JE007291>

Huang Quancheng, Schmerr Nicholas, King Scott, Kim Doyeon, Rivoldini Attilio, Plesa Ana-Catalina, Samuel Henri, Maguire Ross, Karakostas Foivos, Lekić Vedran, Charalambous Constantinos, Collinet Max, Myhill Robert, Antonangeli Daniele, Drilleau Mélanie, Bystricky Misha, Bollinger Caroline, Michaut Chloé, Gudkova Tamara, Irving Jessica, Horleston Anna, Fernando Benjamin, Leng Kuangdai, Nissen-Meyer Tarje, Bejina Frederic, Bozdağ Ebru, Beghein Caroline, Waszek Lauren, Siersch Nicki, Scholz John-Robert, Davis Paul, Lognonné Philippe, Pinot Baptiste, Widmer-Schnidrig Rudolf, Panning Mark, Smrekar Suzanne, Spohn Tilman, Pike William, Giardini Domenico, Banerdt W. Bruce. Seismic detection of a deep mantle discontinuity within Mars by InSight. Proceedings of the National Academy of Sciences of the United States of America, National Academy of Sciences, 18 October 2022, 119. <10.1073/pnas.2204474119>

Bagherian Amirhossein, Khan Amir, Deschamps Frédéric, Samuel Henri, Kruglyakov Mikhail, Giardini Domenico. The tidal-thermal evolution of the Pluto-Charon system. Icarus, Elsevier, 2022, 376. <10.1016/j.icarus.2021.114871>

Durán C., Khan A., Ceylan S., Charalambous C., Kim D., Drilleau M., Samuel Henri, Giardini D.. Observation of a Core‐Diffracted P‐Wave From a Farside Impact With Implications for the Lower‐Mantle Structure of Mars. Geophysical Research Letters, American Geophysical Union, 2022, 49. <10.1029/2022GL100887>

Drilleau Mélanie, Samuel Henri, Garcia Raphaël, Rivoldini Attilio, Perrin Clément, Michaut Chloé, Wieczorek Mark, Tauzin Benoît, Connolly James, Meyer Pauline, Lognonné Philippe, Banerdt William. Marsquake Locations and 1-D Seismic Models for Mars From InSight Data. Journal of Geophysical Research. Planets, Wiley-Blackwell, 2022, 127. <10.1029/2021JE007067>

Drilleau Mélanie, Samuel Henri, Rivoldini Attilio, Panning Mark, Lognonné Philippe. Bayesian inversion of the Martian structure using geodynamic constraints. Geophysical Journal International, Oxford University Press (OUP), 29 September 2021, 226. <10.1093/gji/ggab105>

Khan Amir, Ceylan Savas, van Driel Martin, Giardini Domenico, Lognonné Philippe, Samuel Henri, Schmerr Nicholas C, Stähler Simon C, Duran Andrea C, Huang Quancheng, Kim Doyeon, Broquet Adrien, Charalambous Constantinos, Clinton John F, Davis Paul M, Drilleau Mélanie, Karakostas Foivos, Lekic Vedran, Mclennan Scott M, Maguire Ross R, Michaut Chloé, Panning Mark P, Pike William T, Pinot Baptiste, Plasman Matthieu, Scholz John-Robert, Widmer-Schnidrig Rudolf, Spohn Tilman, Smrekar Suzanne E, Banerdt William B. Upper mantle structure of Mars from InSight seismic data. Science, American Association for the Advancement of Science (AAAS), 23 July 2021, 373. <10.1126/science.abf2966>

Samuel Henri, Ballmer Maxim, Padovan Sebastiano, Tosi Nicola, Rivoldini Attilio, Plesa Ana‐catalina. The Thermo‐Chemical Evolution of Mars With a Strongly Stratified Mantle. Journal of Geophysical Research. Planets, Wiley-Blackwell, April 2021, 126. <10.1029/2020JE006613>

Magali J K, Bodin T, Hedjazian N, Samuel Henri, Atkins S. Geodynamic Tomography: Constraining Upper Mantle Deformation Patterns from Bayesian Inversion of Surface Waves. Geophysical Journal International, Oxford University Press (OUP), 03 December 2020, 224. <10.1093/gji/ggaa577>

Drilleau Melanie, Beucler Éric, Lognonné Philippe, Panning Mark A, Knapmeyer‐endrun Brigitte, Banerdt W. Bruce, Beghein Caroline, Ceylan Savas, Driel Martin, Joshi Rakshit, Kawamura Taichi, Khan Amir, Menina Sabrina, Rivoldini Attilio, Samuel Henri, Stähler Simon, Xu Hoatian, Bonnin Mickaël, Clinton John, Giardini Domenico, Kenda Balthasar, Lekic Vedran, Mocquet Antoine, Murdoch Naomi, Schimmel Martin, Smrekar Suzanne, Stutzmann Éléonore, Tauzin Benoit, Tharimena Saikiran. MSS/1: Single‐station and single‐event marsquake inversion. Earth and Space Science, American Geophysical Union/Wiley, December 2020, 7. <10.1029/2020EA001118>

Monteux Julien, Andrault D, Guitreau M, Samuel Henri, Demouchy S. A mushy Earth's mantle for more than 500 Myr after the magma ocean solidification. Geophysical Journal International, Oxford University Press (OUP), 01 May 2020, 221. <10.1093/gji/ggaa064>

Samuel Henri, Lognonné Philippe, Panning Mark P, Lainey Valéry. The rheology and thermal history of Mars revealed by the orbital evolution of Phobos. Nature, Nature Publishing Group, May 2019, 569. <10.1038/s41586-019-1202-7>

Baratoux David, Samuel Henri, Michaut Chloé, Toplis Michael, Monnereau Marc, Wieczorek Mark, Garcia Raphael, Kurita Kei. Petrological constraints on the density of the Martian crust. Journal of Geophysical Research. Planets, Wiley-Blackwell, July 2014, 119. <10.1002/2014JE004642>

Samuel Henri, Farnetani Cinzia. Thermochemical convection and helium concentrations in mantle plumes. Earth and Planetary Science Letters, Elsevier, 28 February 2003, 207. <10.1016/S0012-821X(02)01125-1>